ARK Stainless Inc. is a leading manufacturer and supplier of premium quality Duplex & Super Duplex Stainless Steel Forged Fittings, designed for high-performance applications in aggressive environments. Manufactured with state-of-the-art technology and high-grade raw materials, our forged fittings provide exceptional strength, superior corrosion resistance, and outstanding performance, even in the most challenging conditions, such as chloride-rich and high-pressure environments.
We specialize in Duplex grades such as UNS S31803 and S32205, and Super Duplex grades including UNS S32750 and S32760. These forged fittings are manufactured in compliance with international standards such as ASTM A105, ASTM A182, and dimensional standards like ASME B16.11, MSS-SP-79, ensuring high-quality products that meet the most stringent requirements for diverse applications.
The unique dual-phase microstructure of Duplex and Super Duplex Stainless Steel provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. These superior materials make our forged fittings ideal for demanding industries such as oil & gas, desalination, chemical processing, marine, and offshore platforms, where both strength and corrosion resistance are paramount.
At ARK Stainless Inc., we offer a comprehensive range of Duplex and Super Duplex Steel Forged Fittings, including but not limited to threaded elbows, unions, tees, crosses, pipe nipples, couplings, bushings, caps, and socket weld fittings. Our fittings are available in a variety of sizes, shapes, grades, and dimensions, with customized options to meet specific requirements.
Duplex Steel Forged Fittings are known for their robust construction, high tensile strength, and low maintenance needs, ensuring long-term durability and reduced downtime. The increased corrosion resistance compared to carbon steel and stainless steel allows for a more reliable and efficient system, with lighter construction and fewer welding requirements, ultimately contributing to a more compact and cost-effective design.
| Grade | Common Name | C% | Mn% | Si% | P% | S% | Cr% | Ni% | Mo% | N% | Others |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2205 | S31803 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 | 0.08–0.20 | - |
| S32205 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 22.0–23.0 | 4.5–6.5 | 3.0–3.5 | 0.14–0.20 | - | |
| Super Duplex | S32750 / S32760 | 0.020 | - | - | - | 0.001 | 25 | 7 | 4.0 | 0.27 | - |
| Property | Duplex Steel S31803 / S32205 | Super Duplex Steel S32750 / S32760 |
|---|---|---|
| Tensile Strength | 620 MPa min | 116 ksi (800 MPa) min |
| Yield Strength | 450 MPa min | 80 ksi (550 MPa) min (0.2% offset) |
| Yield Strength (0.1% Offset) | - | 91 ksi (625 MPa) min |
| Elongation | - | 15% min in 2 inches |
| Hardness (Rockwell C) | - | 32 max |
| Impact Energy | - | 74 ft.-lbs. min |
| Density | 7,805 kg/m³ | - |
| Elastic Modulus | 200 GPa | - |
Duplex S31803/S32205 Forged Fittings is used in the applications like petrochemicals, paper & pulp industry, specialty chemicals, condensers, heat exchangers, oil & gas processing, railways, constructions, etc. Several tests are strictly conducted on all the manufactured ranges of Duplex Steel Forged Fittings in our industry. The tests are IGC tests, pitting corrosion tests, chemical tests, etc. The documents we offer are quality assurance plan, MTC-En10204/3.1b, third party test report, radiography tests report and so on.
| STANDARD | WNR. |
|---|---|
| Duplex S31803 / S32205 | 1.4462 |
These products come with entire test and features that are very necessary for the Super Duplex S32750/S32760 Forged Fittings has several features such as robust or construction, even it has high resistance properties, outstanding workability and welding, leakage-free process, high toughness, and long-lasting life. Here likewise have all the test declarations and required records and reports to the clients or customers. Its dimension standards are ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799. And the size is 1/8NB to 4 NB. Even the type is Fittings, threaded Fittings. The scorecompression is the negotiated end - 2000 /3000/ 6000 LBS. Talking about the specifications it has ASTM A182 / ASME SA182. Even it has extremelysupple and motorized strength. These are the best in any sort of environment because it has passed all sorts of test for international standards.
| STANDARD | WNR. |
|---|---|
| Super Super Duplex S32750 / S32760 | 1.4410 |
