GB/T 18248 34CrMo4 has high endurance strength and creep strength at high temperature, good impact toughness at low temperature, good hardenability, no tendency of overheating, small quenching deformation, GB/T 18248 34CrMo4 has good plasticity at cold edge shape and medium machinability. Poor weldability, preheating before welding, post-welding heat treatment and stress elimination, generally used after tempering treatment, GB/T 18248 34CrMo4 can also be used after high and medium frequency surface quenching or quenching and low and medium temperature tempering.
GB/T 18248 34CrMo4 chemical composition
|
Grade
|
C |
Si |
Mn |
P |
Ni |
|
0.30-0.37 |
≤0.40 |
0.60-0.90 |
≤0.020 |
≤0.30 |
|
|
34CrMo4 |
S |
Cr |
Mo |
V |
Cu |
|
≤0.020 |
0.90-1.20 |
0.15-0.30 |
- |
≤0.20 |
GB/T 18248 34CrMo4 mechanical properties
| Grade |
Tensile strength |
Yield strength |
Elongation |
|
34CrMo4 |
980 |
835 |
12 |
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