42CrMo steel plate belongs to the national standard high-strength alloy structural steel, the implementation standard: GB/T 3077-2015.
42CrMo steel plate has high strength, hardenability, good toughness, small deformation during quenching, and high creep strength and enduring strength at high temperatures. 42CrMo steel plate is used to manufacture forgings that require higher strength than 35CrMo steel. 42CrMo steel plate can also be used for oil deep well drill pipe joints and fishing tools under 2000m, and can be used for molds of bending machines, etc.
The chemical composition of 42CrMo steel plate is as follows:
| Chemical Composition % |
| Steel Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
| 42CrMo |
0.38 to 0.45 |
0.17 to 0.37 |
0.50 to 0.80 |
≤0.030 |
≤0.030 |
0.90 to 1.20 |
0.15 to 0.25 |
20CrMo steel plate belongs to the national standard alloy structural steel, the implementation standard: GB/T 3077-2015.
The chemical composition of20CrMo steel plate is as follows:
| 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 |
20CrMo steel plate has high hardenability, no temper brittleness, good weldability, low tendency to form cold cracks, good machinability and cold strain plasticity. Generally used in quenched and tempered or carburized and quenched state, 20CrMo steel plate is 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 ℃, and higher-level infiltration carbon parts, such as gears, shafts, etc.
