UNS S41000 – Versatile Martensitic Alloy for General-Purpose Strength & Corrosion Protection

Overview

UNS S41000 is a widely used martensitic stainless steel with a 11.5-13.5% chromium content, offering a balanced combination of moderate corrosion resistance and high mechanical strength. Its martensitic structure allows for heat treatment (quenching and tempering) to adjust hardness and strength, making it flexible for diverse applications. Unlike ferritic grades, it can be hardened to achieve enhanced wear resistance while maintaining good machinability in the annealed state. It is magnetic and exhibits reliable performance in atmospheric, freshwater, and mild chemical environments, serving as a versatile choice for industrial and consumer products.

Chemical Composition (wt%)

C: 0.08-0.15, Cr: 11.50-13.50, Mn ≤ 1.00, Si ≤ 1.00, P ≤ 0.040, S ≤ 0.030, Ni ≤ 0.75, N ≤ 0.11

Typical Mechanical Properties (Annealed Condition)

Tensile Strength (Rm): ≥ 450 MPa; Yield Strength (Rp0.2): ≥ 205 MPa; Elongation (A): ≥ 20%; Brinell Hardness (HB): ≤ 225

Core Advantages

Heat-treatable for adjustable hardness and strength; moderate corrosion resistance in mild environments; good machinability and formability in the annealed state; magnetic with high thermal conductivity; cost-effective for general-purpose applications; stable performance at temperatures up to 700°C.

Applications

Valve components, pump shafts, fasteners, cutlery, surgical instruments, machine parts, ore processing equipment, and general hardware requiring moderate strength and corrosion resistance.

Equivalent Grades

EN 1.4006, AISI 410, 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.