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Monel Bars

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Monel Bars

ARK Stainless Inc. is a trusted manufacturer and global supplier of premium-grade Monel 400 and Monel K500 Round Bars & Rods, known for their exceptional corrosion resistance, high tensile strength, and durability under extreme conditions. These bars and rods are widely used in marine engineering, chemical processing, aerospace, and power generation industries, where resistance to seawater, acidic and alkaline environments, and mechanical stress is critical.

Monel 400 offers excellent resistance to corrosion in a variety of harsh chemical environments along with good ductility and thermal conductivity. Monel K500 combines the corrosion resistance of Monel 400 with enhanced strength and hardness through precipitation hardening, making it ideal for high-pressure and high-stress applications such as aerospace fasteners, marine hardware, and valve components. Our products are manufactured to meet stringent international standards including ASTM B164 / ASME SB164, ensuring consistent quality, precise dimensions, and reliable performance for critical engineering uses.

Table of Contents

Chemical Composition of Monel Bars

Grade Ni Fe C Mn Si Cu Al Ti S
400 63.0- 70.00 max 2.50 max 0.3 max 2.00 max 0.50 max Remainder - - 0.024 max
K500 63.0 min 05 - 2 0.25 max 1.5 max 0.5 max 27.0 - 33.0 2.3 - 3.15 0.35 - 0.85 0.010 max

Mechanical Properties of Monel Bars
Grade Tensile (ksi) .2% Yield (ksi) Elongation % Hardness (HRb)
400 75 to 90 25 to 50 60 to 35 60 to 80
K500 Psi – 1,60,000 , MPa – 1100 Psi – 1,15,000 , MPa – 790 20 % -

Monel 400/K500 Round Bar & Rods

Monel 400/K500 Round Bars & Rods are widely used in demanding environments requiring excellent corrosion resistance, high strength, and durability. These bars and rods are ideal for applications in marine engineering, chemical processing, aerospace, oil & gas, and heat exchanger components. Their exceptional resistance to seawater, hydrofluoric acid, and various acidic or alkaline media makes them a reliable choice for harsh industrial conditions.
At ARK Stainless Inc., our Monel bars and rods are produced from premium-grade raw materials using advanced manufacturing processes that ensure precise dimensions, excellent mechanical properties, and superior surface finishes. Comprehensive quality control measures including mechanical testing, chemical analysis, positive material identification (PMI), and non-destructive examinations guarantee compliance with international standards. Each shipment includes Mill Test Certificates (MTC), third-party inspection reports, and full traceability documentation to meet stringent project requirements.


Monel 400/K500 Round Bar & Rods Equivalent Grades
STANDARD UNS WNR. JIS EN
Monel 400 N04400 2.4360 NW 4400 NiCu30Fe
Monel K500 N05500 2.4375 - -

Specification of Monel 400/K500 Round Bar & Rods
  • Specifications: ASTM B164 / ASME SB164
  • Standard Compliance: ASTM, ASME, API, JIS, DIN, EN
  • Size Range: Diameter from 6 mm up to 500 mm or as per customer requirement
  • Length: Standard lengths up to 6000 mm, customizable on request
  • Surface Finish: Hot Rolled, Cold Drawn, Machined, Polished
  • Form: Round Bars, Rods, Forged Bars, Precision Ground Bars
  • Heat Treatment: Solution Annealed, Age Hardened (for K500)
  • Quality Assurance: Mill Test Certificate (MTC) as per EN 10204/3.1, Chemical & Mechanical Test Reports, PMI, NDT Inspection
  • Packing: Export standard wooden crates, protective wrapping, and steel strapping as per client specifications
  • Custom Sizes & Finishes: Available on request to meet specialized project requirements