1.4057 stainless steel
Martensitic chromium stainless QT steel (1.4057)
Martensitic chromium stainless QT steel (1.4057)
Code | X17CrNi16-2 |
US standard (AISI) | 431 |
Composition Alloying components [%] | C: 0.12 - 0.22 Cr: 15.00 - 17.00 Mn: 0 - 1.50 Ni: 1.5 - 2.5 P: 0 - 0.04 S: 0 - 0.015 (0.030*) Si: 0 - 1.00 Remainder: Fe |
Stainless steel grade | C3 |
Density [g/cm³] | 7.7 |
Yield point Rp0.2 [N/mm²] | ≥600 |
Tensile strength Rm [N/mm²] | ≤950 |
Corrosion resistance | - Good - Best resistance within the group of materials classed as martensitic stainless steels, but also susceptible to intergranular corrosion |
Machinability | Poor |
Weldability | Good |
Other properties | - Nickel-free martensitic ferromagnetic structure with high tenacity - The steel is usually tempered (Rm = 1400 N/mm²/Rp0.2 = 1200 N/mm²) - Can be mechanically polished to a mirror finish - Suitability for electropolishing: good - For use in the temperature range -40° - 400°C |
Main uses | Machine and structural parts that are subject to high levels of mechanical stress in the food, petrochemistry, seafaring, automotive, aviation or chemical industries: - Pump parts - Helical and turbine blades - Compressor wheels - Piston rods - Shafts - Valve cones |