40CrNi2Mo alloy structural steel
40CrNi2Mo round steel, 40CrNi2Mo alloy structural steel, 40CrNi2Mo is one of the alloy structural steel, also known as alloy steel, it is on the basis of high-quality carbon structural steel, appropriate to add one or more alloy elements (the total content is not more than 5%) and made of steel.
40CrNi2Mo Equivalent Steel Grades:
| GB | ISO | JIS | SAE | AISI/ASTM |
| 40CrNi2Mo | – | SNCM439 | AMS6414 | 4340 |
40CrNi2Mo Mechanical property:
Tensile strength σ B (MPA): ≥ 980 (100)
Yield strength σ s (MPA): ≥ 835 (85)
Elongation δ 5 (%): ≥ 12
Reduction of area ψ (%): ≥ 55
Impact energy Akv (J): ≥ 78
Impact toughness value α kV (J / cm2): ≥ 98 (10)
Hardness: ≤ 269HB
