UNS S41000 Martensitic Stainless Steel – Versatile Strength-Resistant Alloy

Description

UNS S41000 is a standard martensitic stainless steel, valued for its balanced combination of strength, wear resistance, and moderate corrosion protection. Composed of 11.5-13.5% chromium, it delivers reliable performance in atmospheric and mild chemical environments, while its martensitic structure ensures magnetic properties and heat-treatable strength. Unlike ferritic grades like S40900, S41000 can be quenched and tempered to enhance hardness and wear resistance, making it suitable for components requiring durability. It offers good machinability in the annealed state and can be welded with proper pre- and post-weld heat treatment. While not suited for severe chloride environments, its versatility and cost-effectiveness make it a popular choice for industrial and mechanical applications.

Chemical Composition (wt%)

C: 0.15-0.25, Cr: 11.50-13.50, Mn ≤ 1.00, Si ≤ 1.00, P ≤ 0.045, S ≤ 0.030, Ni ≤ 0.75

Mechanical Properties

Tensile Strength ≥ 585 MPa, Yield Strength ≥ 345 MPa, Elongation ≥ 15%, Hardness ≤ 223 HB (annealed); Tensile Strength ≥ 795 MPa, Yield Strength ≥ 515 MPa, Elongation ≥ 10%, Hardness ≥ 255 HB (heat-treated)

Advantages

Heat-treatable for enhanced strength and wear resistance; good machinability and weldability (with proper heat treatment); magnetic; moderate corrosion resistance; cost-effective for general-purpose strength applications.

Applications

Valves, pumps, shafts, fasteners, industrial machinery parts, cutlery, and components requiring balanced strength and moderate corrosion protection.

Equivalent Grades

AISI 410, EN 1.4006, GB 12Cr13, SUS410

 

Stainless Steel Suppliers

If you have project requirements for stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.