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Stainless Steel Bars

ARK Stainless Inc. is a trusted manufacturer and supplier of premium-quality Stainless Steel Sheets & Plates, designed for durability, corrosion resistance, and optimal performance in critical industrial applications. These products are engineered to meet the stringent demands of sectors requiring high mechanical strength and superior surface finish.

We offer a comprehensive range of Stainless Steel Sheets & Plates in a variety of high-performance grades, including SS 253MA, 304, 304L, 304H, 309, 310, 310S, 316, 316L, 316Ti, 317, 317L, 321, 321H, 347, 347H, 409, 410, 420, 430, 446, and 904L. These grades exhibit excellent resistance to heat, oxidation, and various corrosive environments, making them suitable for both structural and pressure-containing applications.

Our stainless steel sheets and plates are manufactured in accordance with international specifications such as ASTM A240, ASTM A480, and ASME SA240. They are available in hot rolled, cold rolled, and polished finishes, and in multiple forms including plain, chequered, perforated, and mirror finish to suit various industry-specific requirements.

Widely used across industries such as chemical processing, pharmaceuticals, oil & gas, power generation, pulp & paper, marine, aerospace, food & beverage, and architectural applications, our stainless steel sheets and plates are valued for their dimensional accuracy, surface integrity, and long operational life. ARK Stainless Inc. ensures that every product undergoes rigorous testing and inspection to guarantee compliance with global standards and customer expectations.

Table of Contents

Chemical Composition of Stainless Steel Bars

Grade C (max) Mn (max) Si (max) P (max) S (max) Cr (%) Ni (%) Mo (%) N (max) Ti (%) Cu (%) Fe (%)
SS 304/304L/304H 0.08 / 0.03 / 0.10 2.00 0.75 0.045 0.030 18.00-20.00 8.00-12.00 – – – – Balance
SS 309/310/310S 0.08 / 0.25 / 0.08 2.00 / 2.00 / 2.00 1.50 0.045 0.030 22.00-24.00 / 24.00-26.00 / 24.00-26.00 12.00-15.00 / 19.00-22.00 / 19.00-22.00 – – – – Balance
SS 316/316L/316Ti 0.08 / 0.03 / 0.08 2.00 0.75 0.045 0.030 16.00-18.00 10.00-14.00 2.00-3.00 0.10 0.70 – Balance
SS 317/317L 0.08 / 0.03 2.00 0.75 0.045 0.030 18.00-20.00 11.00-15.00 3.00-4.00 0.10 – – Balance
SS 321/321H 0.08 / 0.04 2.00 0.75 0.045 0.030 17.00-19.00 9.00-13.00 – 0.10 5 x C max – Balance
SS 347/347H 0.08 / 0.04 2.00 0.75 0.045 0.030 17.00-19.00 9.00-13.00 – 0.10 0.50-1.00 – Balance
SS 410 0.15 1.00 1.00 0.040 0.030 11.50-13.50 – – – – – Balance
SS 420 0.15 1.00 1.00 0.040 0.030 12.00-14.00 – – – – – Balance
SS 430 0.12 1.00 1.00 0.040 0.030 16.00-18.00 – – – – – Balance
SS 431 0.12 1.00 1.00 0.040 0.030 15.00-17.00 16.00-18.00 – – – – Balance
SS 440 A 0.75 1.00 1.00 0.040 0.030 16.00-18.00 – – – – – Balance
SS 440 B 1.00 1.00 1.00 0.040 0.030 16.00-18.00 – – – – – Balance
SS 440 C 1.20 1.00 1.00 0.040 0.030 16.00-18.00 – – – – – Balance
SS 446 0.20 1.00 1.00 0.040 0.030 23.00-27.00 – 0.50-1.00 – – – Balance
SS 904L 0.020 2.00 1.00 0.040 0.030 19.00-23.00 24.00-27.00 4.00-5.00 – – – Balance
SS 15-5PH 0.07 1.00 1.00 0.040 0.030 15.00-17.50 3.50-5.50 – 0.10 – – Balance
SS 17-4PH 0.07 1.00 1.00 0.040 0.030 15.00-17.50 3.00-5.00 – 0.10 – – Balance

Mechanical Properties Of Stainless Steel Bars

Grade Tensile Strength (MPa / ksi) Yield Strength 0.2% Proof (MPa / ksi) Elongation % Hardness (Brinell) MAX Hardness (Rockwell B) MAX
SS 304/304L/304H 515 - 720 / 75 - 105 205 - 310 / 30 - 45 40 - 60 201 92
SS 309/310/310S 515 - 700 / 75 - 102 205 - 310 / 30 - 45 30 - 60 210 92
SS 316/316L/316Ti 515 - 690 / 75 - 100 205 - 310 / 30 - 45 40 - 60 197 90
SS 317/317L 515 - 690 / 75 - 100 205 - 310 / 30 - 45 40 - 60 197 90
SS 321/321H 515 - 690 / 75 - 100 205 - 310 / 30 - 45 40 - 60 197 90
SS 347/347H 515 - 690 / 75 - 100 205 - 310 / 30 - 45 40 - 60 197 90
SS 410 480 - 760 / 70 - 110 275 - 450 / 40 - 65 18 - 30 220 90
SS 420 490 - 760 / 71 - 110 275 - 450 / 40 - 65 18 - 30 220 90
SS 430 450 - 620 / 65 - 90 205 - 310 / 30 - 45 22 - 30 180 85
SS 431 655 - 895 / 95 - 130 345 - 620 / 50 - 90 15 - 25 237 95
SS 440A 655 - 895 / 95 - 130 415 - 760 / 60 - 110 15 - 25 600 60
SS 440B 655 - 895 / 95 - 130 415 - 760 / 60 - 110 15 - 25 600 60
SS 440C 655 - 895 / 95 - 130 415 - 760 / 60 - 110 15 - 25 600 60
SS 446 480 - 620 / 70 - 90 275 - 415 / 40 - 60 20 - 30 200 85
SS 904L 485 - 690 / 70 - 100 205 - 310 / 30 - 45 40 - 50 190 90
SS 15-5PH 930 - 1180 / 135 - 171 850 - 1100 / 123 - 160 10 - 20 320 95
SS 17-4PH 930 - 1180 / 135 - 171 850 - 1100 / 123 - 160 10 - 20 320 95

SS 304 / 304L / 304H Bars

SS 304 / 304L / 304H Bars are highly versatile stainless steel bars renowned for their excellent corrosion resistance, strength, and ease of fabrication. These bars offer superior performance in both industrial and architectural applications, benefiting from their balanced chromium and nickel composition. The low carbon content in 304L ensures enhanced weldability and resistance to sensitization, making these grades ideal for welded constructions.
Commonly used in machinery parts, fasteners, structural components, automotive parts, and chemical processing equipment, these bars provide excellent toughness and durability under harsh environmental conditions. Their good mechanical properties and attractive surface finish also make them suitable for decorative and functional applications.
SS 304 / 304L / 304H Bars are supplied with full certification, including Mill Test Certificates (MTC), Quality Assurance Plans (QAP), Non-Destructive Testing reports, and third-party inspection certificates, ensuring compliance with global quality standards.


304/304L/304H Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 304 S30400 1.4301 Z7CN18‐09 X5CrNi18-10 SUS 304 304S31 08Х18Н10
SS 304L S30403 1.4306/1.4307 Z3CN18‐10 X2CrNi18-9 / X2CrNi19-11 SUS 304L 304S11 03Х18Н11
SS 304H S30409 1.4948 - X6CrNi18-11 - - -

Specification of Stainless Steel 304/304L/304H Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276, ASTM A479 / ASME SA479
  • Diameter Range: 6 mm to 300 mm (or as per customer requirement)
  • Length: 1000 mm, 2000 mm, 3000 mm, or customized lengths
  • Form: Round Bars, Hex Bars, Square Bars, Flat Bars, Threaded Bars
  • Finish: Hot Rolled, Cold Drawn, Polished, Machined
  • Mechanical Properties: High tensile strength, good ductility, and toughness
  • Inspection, Test Reports: Mill Test Certificates (MTC), EN 10204 3.1, Chemical and Mechanical Test Reports, PMI Test Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Non-Destructive Testing Reports
  • Packing: Standard export seaworthy packing - Wooden Pallets, Wooden Boxes, or as per customer requirements
  • Specials: Custom sizes, shapes, and specifications available upon request

SS 309 / 310 / 310S Bars

SS 309 / 310 / 310S Bars are high-performance stainless steel bars designed for superior oxidation and heat resistance. These grades contain elevated levels of chromium and nickel, making them ideal for use in extreme temperature environments and applications involving thermal cycling. The lower carbon content in 310S enhances weldability and reduces carbide precipitation during welding, improving corrosion resistance in welded components.
Widely used in furnace parts, heat exchangers, kiln components, and other high-temperature industrial equipment, these bars offer excellent mechanical strength and resistance to scaling at elevated temperatures. They also provide good corrosion resistance in oxidizing atmospheres and various chemical environments.
SS 309 / 310 / 310S Bars are supplied with full documentation including Mill Test Certificates (MTC), Quality Assurance Plans (QAP), Non-Destructive Testing reports, and third-party inspection certificates to ensure compliance with international quality standards.


309 / 310 / 310S Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 309 S30900 1.4828 Z10CN25.20 X15Cr25Ni20 SUS 309S 309S31 08Х25Н20
SS 310 S31000 1.4841 Z15CN25.30 X15CrNi25-20 SUS 310S 310S31 08Х25Н20С2
SS 310S S31008 1.4845 Z15CN25.30 X15CrNi25-20 SUS 310S 310S31 08Х25Н20С2

Specification of Stainless Steel 309/310/310S Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276
  • Diameter Range: 6 mm to 300 mm (or as per customer requirement)
  • Length: 1000 mm, 2000 mm, 3000 mm, or customized lengths
  • Form: Round Bars, Hex Bars, Square Bars, Flat Bars, Threaded Bars
  • Finish: Hot Rolled, Cold Drawn, Polished, Machined
  • Mechanical Properties: Excellent heat resistance, good tensile strength, and oxidation resistance
  • Inspection, Test Reports: Mill Test Certificates (MTC), EN 10204 3.1, Chemical and Mechanical Test Reports, PMI Test Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Non-Destructive Testing Reports
  • Packing: Standard export seaworthy packing - Wooden Pallets, Wooden Boxes, or as per customer requirements
  • Specials: Custom sizes, shapes, and specifications available upon request

SS 316 / 316L / 316Ti Bars

SS 316 / 316L / 316Ti Bars are austenitic stainless steel bars known for their exceptional corrosion resistance, especially against chlorides and other industrial solvents. The addition of molybdenum significantly improves resistance to pitting and crevice corrosion, making these grades ideal for marine environments, chemical processing, pharmaceuticals, and food processing industries.
SS 316L is a low carbon version that reduces carbide precipitation during welding, enhancing corrosion resistance in welded structures. SS 316Ti contains titanium for improved stability at elevated temperatures, making it suitable for heat exchanger tubes and components exposed to high temperatures.
These bars exhibit excellent mechanical properties, good toughness, and weldability, making them versatile for critical applications requiring strength and durability.
Complete documentation including Mill Test Certificates (MTC), Quality Assurance Plans (QAP), Non-Destructive Testing (NDT) reports, and third-party inspection certificates accompany every shipment, ensuring compliance with international standards.


316 / 316L / 316Ti Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 316 S31600 1.4401 Z2CNND17-12 X5CrNiMo17-12-2 SUS 316 316S31 08Х17Н13М2Т
SS 316L S31603 1.4404 Z2CNND18-14 X2CrNiMo17-12-2 SUS 316L 316S11 08Х17Н13М3Т
SS 316Ti S31635 1.4571 Z2CNDT17-12-2 X6CrNiMoTi17-12-2 - 316S37 08Х17Н15М3Т

Specification of Stainless Steel 316/316L/316Ti Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276
  • Diameter Range: 6 mm to 300 mm (or as per customer requirement)
  • Length: 1000 mm, 2000 mm, 3000 mm, or customized lengths
  • Form: Round Bars, Hex Bars, Square Bars, Flat Bars, Threaded Bars
  • Finish: Hot Rolled, Cold Drawn, Polished, Machined
  • Mechanical Properties: Excellent corrosion resistance, high tensile strength, good toughness, and weldability
  • Inspection, Test Reports: Mill Test Certificates (MTC), EN 10204 3.1, Chemical and Mechanical Test Reports, PMI Test Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Non-Destructive Testing Reports
  • Packing: Standard export seaworthy packing - Wooden Pallets, Wooden Boxes, or as per customer requirements
  • Specials: Custom sizes, shapes, and specifications available upon request

SS 317 / 317L Bars

SS 317 / 317L Bars are austenitic stainless steel bars known for superior corrosion resistance, particularly in acidic and chloride-rich environments. With higher molybdenum content compared to SS 316, these grades provide enhanced resistance to pitting and crevice corrosion, making them ideal for chemical processing, pollution control, and marine applications.
The low carbon version, SS 317L, reduces carbide precipitation during welding, ensuring excellent performance in welded structures exposed to harsh environments. These bars offer excellent mechanical properties, good toughness, and weldability.
SS 317 / 317L Bars are supplied with comprehensive documentation including Mill Test Certificates (MTC), Quality Assurance Plans (QAP), Non-Destructive Testing (NDT) reports, and third-party inspection certificates to guarantee quality and compliance with international standards.


317 / 317L Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 317 S31700 1.4436 Z3CN20-12-2 X6CrNiMo17-12-3 SUS 317 317S31 08Х17Н13М3Т
SS 317L S31703 1.4438 Z3CN20-12-3 X2CrNiMo17-12-3 SUS 317L 317S11 08Х17Н13М3Т

Specification of Stainless Steel 317/317L Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276
  • Diameter Range: 6 mm to 300 mm (or as per customer requirement)
  • Length: 1000 mm, 2000 mm, 3000 mm, or customized lengths
  • Form: Round Bars, Hex Bars, Square Bars, Flat Bars, Threaded Bars
  • Finish: Hot Rolled, Cold Drawn, Polished, Machined
  • Mechanical Properties: Superior corrosion resistance, excellent tensile strength, good toughness, and weldability
  • Inspection, Test Reports: Mill Test Certificates (MTC), EN 10204 3.1, Chemical and Mechanical Test Reports, PMI Test Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Non-Destructive Testing Reports
  • Packing: Standard export seaworthy packing - Wooden Pallets, Wooden Boxes, or as per customer requirements
  • Specials: Custom sizes, shapes, and specifications available upon request

SS 321 / 321H Bars

SS 321 / 321H Bars are titanium-stabilized austenitic stainless steels that offer excellent resistance to intergranular corrosion and oxidation, especially after exposure to high temperatures. SS 321 is stabilized with titanium, making it ideal for welding applications as it prevents carbide precipitation. SS 321H is a high carbon version that provides enhanced strength and creep resistance at elevated temperatures.
These bars are widely used in high-temperature chemical processing, heat exchangers, furnace parts, aerospace components, and marine systems. They provide excellent weldability, formability, and mechanical performance under thermal stress.
Our SS 321 / 321H Bars come with comprehensive documentation including Mill Test Certificates (MTC), Quality Assurance Plans (QAP), Non-Destructive Testing (NDT) reports, and Third-Party Inspection Certificates, ensuring compliance with global quality standards.


321 / 321H Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 321 S32100 1.4541 Z6CNT18-10 X6CrNiTi18-10 SUS 321 321S31 08Х18Н10Т
SS 321H S32109 1.4878 - X12CrNiTi18-9 SUS 321H - -

Specification of Stainless Steel 321/321H Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276, ASTM A479 / ASME SA479
  • Diameter Range: 6 mm to 300 mm (custom sizes available)
  • Length: 1000 mm to 6000 mm or as required
  • Form: Round Bars, Square Bars, Hex Bars, Flat Bars, Threaded Bars, Forged Bars
  • Finish: Hot Rolled, Cold Drawn, Polished, Peeled, Centerless Ground
  • Mechanical Properties: High-temperature strength, resistance to scaling and stress rupture, good toughness and weldability
  • Inspection, Test Reports: Mill Test Certificates (MTC), EN 10204 3.1, Chemical and Mechanical Reports, PMI Test Reports, Third Party Inspection Reports, NABL Approved Lab Reports
  • Packing: Standard Export Seaworthy Packing – Wooden Pallets, Boxes, or as per Customer Request
  • Specials: Custom dimensions, grades, and tolerance available upon request

SS 347 / 347H Bars

SS 347 / 347H Bars are stabilized austenitic stainless steels containing columbium (niobium), offering superior resistance to intergranular corrosion after exposure to high temperatures. SS 347 is ideal for applications requiring repeated heating cycles up to 850°C, while SS 347H, the high-carbon version, provides improved creep strength and stress rupture properties, making it suitable for elevated temperature service.
These bars are extensively used in high-temperature chemical processing, power generation, petroleum refining, and heat exchanger systems. Their excellent welding and forming characteristics, combined with good mechanical strength and oxidation resistance, make them ideal for demanding engineering applications.
Our SS 347 / 347H Bars are supplied with complete traceability and certification, including Mill Test Certificates, Third-Party Inspection Reports, Ultrasonic Testing, and compliance with international standards to ensure product reliability and performance.


347 / 347H Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 347 S34700 1.4550 Z6CNT18-11 X6CrNiNb18-10 SUS 347 347S17 08Х18Н12Б
SS 347H S34709 1.4961 - X12CrNiNb18-9 SUS 347H - -

Specification of Stainless Steel 347/347H Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276, ASTM A479 / ASME SA479
  • Diameter Range: 6 mm to 300 mm or as specified
  • Length: 1000 mm to 6000 mm, custom lengths available
  • Form: Round Bars, Hex Bars, Square Bars, Flat Bars, Forged Bars, Bright Bars
  • Finish: Black, Bright, Peeled, Cold Drawn, Centerless Ground, Polished
  • Mechanical Properties: High creep resistance, excellent oxidation and corrosion resistance at high temperature, good toughness and weldability
  • Inspection, Test Reports: Mill Test Certificates (MTC), EN 10204 3.1, Mechanical & Chemical Analysis, PMI, Visual and Ultrasonic Testing, Third Party Inspection
  • Packing: Export Worthy Packing – Wooden Boxes, Bundled with Plastic/Steel Straps, or as per Client Requirement
  • Specials: Custom lengths, sizes, and tolerances can be supplied upon request

SS 410 Bars

SS 410 Bars are martensitic stainless steel bars known for their high strength, excellent hardness, and moderate corrosion resistance. These bars are heat-treatable and can be hardened by quenching and tempering, making them suitable for a wide range of mechanical and industrial applications where strength and wear resistance are essential.
Due to their good corrosion resistance in mild atmospheres, steam, and many mild chemical environments, SS 410 Bars are widely used in cutlery, valves, pump shafts, turbine blades, fasteners, and medical instruments. They offer a cost-effective alternative to higher alloyed grades in less aggressive environments.
We supply SS 410 Bars with complete traceability and certifications including Mill Test Certificates, Ultrasonic Testing Reports, and Third-Party Inspection approvals, ensuring quality compliance with ASTM and international standards.


410 Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 410 S41000 1.4006 Z12C13 X12Cr13 SUS 410 410S21 20Х13

Specification of Stainless Steel 410 Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276, ASTM A479 / ASME SA479
  • Diameter Range: 5 mm to 300 mm or as specified
  • Length: 1000 mm to 6000 mm, or custom lengths on request
  • Form: Round Bars, Hex Bars, Square Bars, Flat Bars, Forged Bars, Bright Bars
  • Finish: Black, Bright, Peeled, Cold Drawn, Centerless Ground, Polished
  • Mechanical Properties: High tensile and yield strength, good impact toughness, moderate corrosion and oxidation resistance
  • Heat Treatment: Hardenable by quenching and tempering
  • Inspection, Test Reports: Mill Test Certificates (MTC), EN 10204 3.1, Chemical & Mechanical Analysis, PMI Test, Ultrasonic Testing, Third Party Inspection
  • Packing: Wooden Boxes, Bundled with Plastic/Steel Strips, or as per customer requirement
  • Specials: Custom size, tolerance, and finish available upon request

SS 420 Bars

SS 420 Bars are high-carbon martensitic stainless steel bars that offer excellent hardness and good corrosion resistance after heat treatment. Known for their high polishability and wear resistance, SS 420 Bars are suitable for cutting tools, surgical instruments, valve parts, and shafts. These bars exhibit strong mechanical strength, good ductility in annealed condition, and are capable of attaining the highest hardness of any stainless steel grade.
Due to their resistance to mild acids, alkalis, water, and air, SS 420 Bars are widely used in various industrial and domestic applications. Their versatility and ability to retain sharp edges make them ideal for applications requiring strength and precision.
We supply SS 420 Bars in various finishes and dimensions with complete certification including Mill Test Certificates, Ultrasonic Testing, and Third-Party Inspection to ensure compliance with national and international standards.


420 Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 420 S42000 1.4021 / 1.4028 Z20C13 X20Cr13 / X30Cr13 SUS 420J1 / 420J2 420S37 20X13

Specification of Stainless Steel 420 Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276, ASTM A479 / ASME SA479
  • Diameter Range: 5 mm to 250 mm
  • Length: 1000 mm to 6000 mm or custom lengths available
  • Form: Round Bars, Square Bars, Flat Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Peeled, Cold Drawn, Polished
  • Heat Treatment: Annealed, Hardened and Tempered
  • Mechanical Properties: High hardness, good tensile strength, moderate corrosion resistance
  • Inspection, Test Reports: Mill Test Certificate, EN 10204 3.1, Chemical Reports, Mechanical Reports, Ultrasonic Testing, Third Party Inspection
  • Packing: Bundled with steel strips, plastic wrapped, or packed in wooden boxes as required
  • Specials: Non-standard sizes and custom specifications available upon request

SS 430 Bars

SS 430 Bars are ferritic stainless steel bars with excellent resistance to corrosion, particularly against organic acids and nitric acid. These bars are known for their good formability, moderate mechanical properties, and oxidation resistance up to 815°C (1500°F). Unlike austenitic stainless steels, SS 430 does not harden with heat treatment but can be cold worked for improved strength and finish.
SS 430 Bars are widely used in applications such as kitchen utensils, automotive trim, dishwashers, nitric acid plants, and structural decorative elements. Their magnetic properties and economical cost make them a preferred choice in many domestic and industrial applications.
Our SS 430 Bars are available in various sizes, shapes, and surface finishes, and are supplied with quality documentation such as Mill Test Certificates and third-party inspection reports to meet industry standards and customer specifications.


430 Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 430 S43000 1.4016 Z8C17 X6Cr17 SUS 430 430S17 08Х17

Specification of Stainless Steel 430 Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276, ASTM A479 / ASME SA479
  • Diameter Range: 5 mm to 250 mm
  • Length: 1000 mm to 6000 mm or as required
  • Form: Round Bars, Square Bars, Flat Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Peeled, Cold Drawn, Polished
  • Mechanical Characteristics: Good ductility, moderate tensile strength, excellent oxidation resistance
  • Heat Resistance: Up to 815°C (in intermittent service)
  • Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Analysis, Mechanical Testing, PMI Testing, Visual and Dimensional Inspection
  • Packing: Standard Export Packaging – Wooden Boxes, Plastic Wrapping, or Bundles with Steel Strips
  • Specials: Custom sizes, finishes, and specifications can be supplied upon request

SS 431 Bars

SS 431 Bars are high chromium martensitic stainless steel bars with added nickel content that enhances toughness and corrosion resistance. These bars are known for their excellent tensile and yield strength, good toughness, and moderate corrosion resistance in marine and chemical environments. SS 431 offers high hardness and wear resistance when hardened and tempered.
Common applications for SS 431 Bars include pump and valve components, propeller shafts, marine hardware, aircraft parts, and high-stress components in corrosive conditions. Their machinability is enhanced in the annealed condition, and they can be heat treated to attain high mechanical properties.
We supply SS 431 Bars with comprehensive quality documentation, including Mill Test Certificates and third-party inspection reports, to ensure adherence to international quality and performance standards.


431 Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 431 S43100 1.4057 Z15CN17-03 X17CrNi16-2 SUS 431 431S29 14Х17Н2

Specification of Stainless Steel 431 Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276, ASTM A479 / ASME SA479
  • Diameter Range: 6 mm to 200 mm
  • Length: 1000 mm to 6000 mm or custom lengths
  • Form: Round Bars, Hex Bars, Square Bars, Flat Bars, Forged Bars
  • Finish: Bright, Black, Peeled, Polished, Ground
  • Mechanical Characteristics: High tensile strength, good toughness, and wear resistance
  • Heat Treatment: Quenched and Tempered to achieve high hardness
  • Corrosion Resistance: Good in mildly corrosive environments and fresh water
  • Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Composition Reports, Mechanical Testing Reports, PMI Test, Visual and Dimensional Inspection
  • Packing: Wooden Boxes, Plastic Wrapping, or Bundled with Steel Strips for Export
  • Specials: Custom sizes and specifications are available upon request

SS 440 A Bars

SS 440 A Bars are high carbon martensitic stainless steel bars known for their excellent wear resistance and moderate corrosion resistance. They are commonly used in applications where high strength and hardness are required after heat treatment. SS 440A has lower carbon content compared to 440B and 440C, making it easier to machine and slightly tougher, though with slightly lower hardness.
These bars are suitable for manufacturing cutting tools, blades, surgical instruments, valve components, and other high-stress mechanical parts. SS 440A offers good resistance to mild corrosive environments and can be polished to a high finish, making it ideal for decorative or high-precision components.
We supply SS 440 A Bars with complete quality assurance, supported by test certificates, third-party inspection approvals, and compliance with global standards.


440A Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 440A S44002 1.4005 Z20C13 X20Cr13 SUS 440A 440S17 20Х13

Specification of Stainless Steel 440A Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276
  • Diameter Range: 5 mm to 150 mm
  • Length: 1000 mm to 6000 mm or custom lengths
  • Form: Round Bars, Square Bars, Flat Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Peeled, Polished, Centreless Ground
  • Mechanical Properties: High hardness, good edge retention, and wear resistance after hardening
  • Heat Treatment: Hardened and Tempered for enhanced performance
  • Corrosion Resistance: Moderate; suitable for less aggressive environments
  • Inspection, Test Reports: Mill Test Certificate, Chemical Analysis Report, Mechanical Test Report, Hardness Test, Visual and Dimensional Inspection, EN 10204 3.1
  • Packing: Standard export-worthy packing in Wooden Boxes, Bundles, or as specified
  • Specials: Custom specifications and sizes available upon request

SS 440 B Bars

SS 440 B Bars are high carbon martensitic stainless steel bars with enhanced hardness and strength compared to 440A, owing to their higher carbon content. They provide good corrosion resistance in mild atmospheres and offer superior wear resistance and edge retention after heat treatment, making them ideal for applications that demand both durability and precision.
Commonly used in the manufacturing of cutting tools, surgical instruments, valve components, nozzles, and industrial blades, SS 440B Bars deliver optimal performance when hardened and tempered. They also offer a good combination of mechanical strength and corrosion resistance in non-severe environments.
Supplied with stringent quality control and full traceability, our SS 440 B Bars meet international specifications and are backed by comprehensive test documentation and inspection reports.


440B Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 440B S44003 1.4112 Z25C13 X90CrMoV18 SUS 440B 440S45 30Х13

Specification of Stainless Steel 440B Bars
  • Stainless Steel Bar Specification: ASTM A276 / ASME SA276
  • Diameter Range: 5 mm to 150 mm
  • Length: 1000 mm to 6000 mm or as required
  • Form: Round Bars, Square Bars, Flat Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Peeled, Polished, Centreless Ground
  • Mechanical Properties: High hardness, good wear resistance, and superior cutting-edge retention
  • Heat Treatment: Hardened and Tempered for best performance
  • Corrosion Resistance: Moderate; better than 440A, especially in polished condition
  • Inspection, Test Reports: Mill Test Certificate, Chemical Composition Report, Mechanical Properties Report, Hardness Test, Third Party Inspection, EN 10204 3.1
  • Packing: Wooden Boxes, Bundles with Plastic Wrapping, or Customized as per Client
  • Specials: Custom cut sizes and tailored mechanical properties available on demand

SS 440 C Bars

SS 440 C Bars are high carbon martensitic stainless steel bars known for their exceptional hardness, strength, and wear resistance. Among the 440 series, 440C contains the highest carbon content, allowing it to be heat treated to the highest hardness levels (typically 58–60 HRC), making it ideal for applications involving cutting, tooling, and heavy-duty wear conditions.
These bars offer moderate corrosion resistance, primarily when in hardened and polished condition. SS 440C Bars are extensively used in the production of bearing parts, surgical instruments, dies, knives, valve components, and molds. Their outstanding mechanical properties, especially after heat treatment, make them suitable for precision-engineered components requiring long service life.
Each batch is thoroughly inspected and supplied with mill certifications, hardness reports, and optional third-party inspection to ensure reliability and performance in demanding industrial applications.


440C Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 440C S44004 1.4125 Z100CD17 X105CrMo17 SUS 440C 440S60 95Х18

Specification of Stainless Steel 440C Bars
  • Stainless Steel Bar Specification: ASTM A276 / A479, ASME SA276 / SA479
  • Diameter Range: 5 mm to 200 mm
  • Length: 1000 mm to 6000 mm or custom cut to size
  • Form: Round Bars, Square Bars, Flat Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Polished, Peeled, Centreless Ground
  • Heat Treatment: Hardened and Tempered (capable of 58–60 HRC)
  • Applications: Bearings, Surgical Blades, Valve Parts, Industrial Knives, Dies, Molds
  • Corrosion Resistance: Moderate, best when hardened and surface polished
  • Inspection, Test Reports: Mill Test Certificates, Hardness Reports, Chemical Analysis, Mechanical Properties Reports, Third Party Inspection (on request), EN 10204 3.1
  • Packing: Export worthy packaging – Wooden Boxes, Bundled with Plastic Wraps, or as per Customer Requirements
  • Specials: Tailor-made sizes, tolerances, and specifications available on request

SS 446 Bars

SS 446 Bars are high chromium ferritic stainless steel bars known for their superior resistance to high-temperature oxidation and corrosion. With a chromium content of around 24–27%, SS 446 offers excellent scaling resistance at elevated temperatures, making it an ideal material for use in heat exchangers, furnace parts, boiler baffles, and other components exposed to extreme heat and corrosive atmospheres.
These bars exhibit good resistance to sulfidation and other forms of hot gas corrosion. Though not as strong or ductile as austenitic grades, SS 446 bars are preferred in thermal and oxidizing environments due to their stability and strength retention at high temperatures.
SS 446 Bars are supplied in various sizes and finishes, with full traceability and documentation, including mill test certificates, mechanical and chemical reports, and third-party inspection upon request.


446 Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 446 S44600 1.4762 / 1.4763 Z12C27 X10CrAlSi25 / X18CrN28 SUS 446 446S45 20X23H18

Specification of Stainless Steel 446 Bars
  • Stainless Steel Bar Specification: ASTM A276 / A479, ASME SA276 / SA479
  • Diameter Range: 5 mm to 200 mm
  • Length: 1000 mm to 6000 mm or as required
  • Form: Round Bars, Flat Bars, Square Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Peeled, Polished
  • Condition: Annealed, Hardened (optional for specific applications)
  • Applications: Heat Exchangers, Furnace Parts, Thermal Processing Equipment, Boiler Baffles, Incinerators
  • Corrosion Resistance: Excellent resistance to oxidation, sulfidation, and scaling at high temperatures
  • Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports
  • Packing: Standard Export Packing – Wooden Boxes, Plastic Wrapping, Bundled with Steel Strips
  • Specials: Custom sizes, lengths, and finishes available upon request

SS 904L Bars

SS 904L Bars are high alloy austenitic stainless steel bars with low carbon content and enhanced corrosion resistance, especially against strong oxidizing acids such as sulfuric acid. Featuring high amounts of nickel, chromium, molybdenum, and copper, SS 904L offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking in aggressive chemical environments.
These bars are widely used in chemical processing, pharmaceuticals, pollution control, and seawater applications where durability and resistance to harsh environments are essential. The low carbon content minimizes carbide precipitation during welding, ensuring excellent weldability and toughness.
SS 904L Bars are manufactured to meet stringent international standards and supplied with comprehensive documentation including mill test certificates, mechanical and chemical analysis reports, and third-party inspection certifications.


904L Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. AFNOR EN JIS BS GOST
SS 904L S90400 1.4539 X2CrNiMoCuN25-20-5 904L - 904L 06Х25Н20С2М

Specification of Stainless Steel 904L Bars
  • Stainless Steel Bar Specification: ASTM A276 / A479, ASME SA276 / SA479
  • Diameter Range: 6 mm to 200 mm
  • Length: 1000 mm to 6000 mm or as required
  • Form: Round Bars, Flat Bars, Square Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Polished, Pickled
  • Condition: Annealed
  • Applications: Chemical Processing, Pollution Control, Seawater Equipment, Pharmaceutical Industry, Heat Exchangers
  • Corrosion Resistance: Excellent resistance to acid corrosion, pitting, crevice corrosion, and stress corrosion cracking
  • Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports
  • Packing: Standard Export Packing – Wooden Boxes, Plastic Wrapping, Bundled with Steel Strips
  • Specials: Custom sizes, lengths, and finishes available on request

SS 15-5PH Bars

SS 15-5PH Bars are precipitation hardening stainless steel bars known for their excellent combination of high strength, good corrosion resistance, and superior mechanical properties. These bars are commonly used in aerospace, chemical processing, and nuclear industries due to their high tensile strength and toughness. The alloy exhibits good resistance to stress corrosion cracking and offers ease of fabrication with heat treatment capabilities to achieve desired mechanical properties.
The 15-5PH stainless steel bars are supplied in solution annealed or precipitation hardened conditions and are ideal for applications requiring high strength and moderate corrosion resistance.
Supplied with comprehensive quality documentation including mill test certificates, mechanical and chemical analysis reports, and third-party inspection certifications, these bars meet rigorous international standards.


15-5PH Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. EN
SS 15-5PH S15500 1.4545 X5CrNiCuNb16-4

Specification of Stainless Steel 15-5PH Bars
  • Stainless Steel Bar Specification: ASTM A564, ASME SA564
  • Diameter Range: 6 mm to 200 mm
  • Length: 1000 mm to 6000 mm or as required
  • Form: Round Bars, Flat Bars, Square Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Polished, Pickled
  • Condition: Solution Annealed, Precipitation Hardened
  • Applications: Aerospace, Chemical Processing, Nuclear Equipment, High-Strength Structural Components
  • Mechanical Properties: High tensile strength, good toughness, corrosion resistance, and heat treatable
  • Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports
  • Packing: Standard Export Packing – Wooden Boxes, Plastic Wrapping, Bundled with Steel Strips
  • Specials: Custom sizes, lengths, and finishes available on request

SS 17-4PH Bars

SS 17-4PH Bars are precipitation hardening stainless steel bars renowned for their excellent combination of high strength, corrosion resistance, and good mechanical properties. These bars are widely used in aerospace, chemical, petrochemical, and nuclear industries where high strength and moderate corrosion resistance are required. The alloy’s ability to be heat treated to achieve a range of mechanical properties makes it versatile for demanding applications.
The 17-4PH stainless steel bars are supplied in solution annealed or precipitation hardened conditions and provide superior performance in environments exposed to mild to moderate corrosive media.
Our SS 17-4PH Bars come with full quality documentation including mill test certificates, chemical and mechanical analysis reports, and third-party inspection certifications to assure compliance with global standards.


17-4PH Stainless Steel Bars Equivalent Grades
STANDARD UNS WNR. EN
SS 17-4PH S17400 1.4542 X5CrNiCuNb16-4

Specification of Stainless Steel 17-4PH Bars
  • Stainless Steel Bar Specification: ASTM A564, ASME SA564
  • Diameter Range: 6 mm to 200 mm
  • Length: 1000 mm to 6000 mm or as required
  • Form: Round Bars, Flat Bars, Square Bars, Hex Bars, Forged Bars
  • Finish: Bright, Black, Polished, Pickled
  • Condition: Solution Annealed, Precipitation Hardened
  • Applications: Aerospace, Chemical Processing, Petrochemical, Nuclear Equipment, High-Strength Structural Components
  • Mechanical Properties: High tensile strength, good toughness, corrosion resistance, and heat treatable
  • Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports
  • Packing: Standard Export Packing – Wooden Boxes, Plastic Wrapping, Bundled with Steel Strips
  • Specials: Custom sizes, lengths, and finishes available on request