Introduction
S31050 material No is 1.4466, And Designation is X1CrNiMoN25-22-2,The trade name is 310MoLN/253MA, The mainly chemical alloy material is Chromium not less 24%,Nickel not less 21% and Molybdenum not less 2%,these alloy composition make the material have excellent corrosion resistance in high Acid and alkalinity environment. And popular in Super heat spare parts production.
Chemical components
Element | Content (%) |
Iron, Fe | Balance |
Chromium, Cr | 24-26 |
Nickel, Ni | 21-23 |
Molybdenum, Mo | 2-2.50 |
Manganese, Mn | ≤ 2 |
Nitrogen, N | 0.10-0.16 |
Silicon, Si | ≤ 0.70 |
Phosphorous, P | 0.025 |
Carbon, C | ≤ 0.020 |
Sulfur, S | ≤ 0.010 |
Mechanical properties
properties | Metric | Imperial |
Tensile strength | 540-740 MPa | 78320- 107327 psi |
Proof strength | 250 MPa | 36259 psi |
Modulus of elasticity (20°C) | 195 GPa | 28282 ksi |
Elongation at break (In 2", 50% cold worked) | 40% | 40% |
Hardness, Brinell | 95 | 95 |
Available standard and products.
ASTM A182 For Forged or Rolled Alloy and Stainless Steel Pipe Flanges,Forged Fittings, and Valves and Parts for High-Temperature Service
ASTM A240 for Chromium and Chromium-Nickel Stainless Sheet, and Strip for Pressure Vessels
ASTM A213 for seamless boiler, superheater, and heat-exchanger tubes
ASTM 276 for stainless steel bar and shapes
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