Alloy structural steel 20CrMo is a kind of steel with high hardenability, no temper brittleness, very good weldability, little tendency to form cold cracks, good machinability and cold strain plasticity.
The chemical composition of 20CrMo steel plate:
| Chemical Composition (%) | ||||||||
| Steel Grade | C | Si | Mn | P | S | Cr | Mo | Cu |
| 20CrMo | 0.17 to 0.24 | 0.17 to 0.37 | 0.40 to 0.70 | ≤0.030 | ≤0.030 | 0.80 to 1.10 | 0.15 to 0.25 | ≤0.30 |
Mechanical properties of 20CrMo steel plate:
Tensile strength σb (MPa): ≥885(90)
Yield strength σs (MPa): ≥685(70)
Elongation δ5 (%): ≥12
Reduction of area ψ (%): ≥50
Impact energy Akv (J): ≥78
Impact toughness value αkv (J/cm2): ≥98(10)
Hardness: ≤197HB
Application of 20CrMo steel plate: 20CrMo steel plate is mainly used to manufacture high-pressure pipes and various fasteners that work in non-corrosive media and media containing nitrogen and hydrogen mixtures with a working temperature of less than 250°C, as well as higher-level carburized parts, such as Gears, shafts, etc.
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