Performance Characteristics: Belongs to the ultra-high strength steel with high strength and toughness, hardenability, no significant temper brittleness after quenching and tempering treatment ，it has higher fatigue limit and the resistance to repeated impact, good low temperature impact toughness.
Applications:
Used to manufacture big forging workpiece with large section which request higher strength than 35CrMo, such as big locomotive tractive gear, gear on driven supercharger, and pressure vessel gears, rear axle, the load of a great rod and spring clip. Also be used for the deep oil drill pipe joints and fishing tools under the 2000m and can be used in the mold of the bending machine.
Chemical Composition(%):
|
Standard |
Steel Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
|
DIN |
1.7225 |
0.38-0.45 |
≤0.40 |
0.60-0.90 |
0.035 |
0.035 |
0.90-1.20 |
0.15-0.30 |
|
|
ASTM |
4140 |
0.38-0.43 |
0.15-0.35 |
0.75-1.00 |
0.035 |
0.040 |
0.80-1.10 |
0.15-0.25 |
|
|
GB |
42CrMo |
0.38-0.45 |
0.17-0.37 |
0.50-0.80 |
0.035 |
0.035 |
0.90-1.20 |
0.15-0.25 |
≤0.30 |
Packaging We provide the package according to the export standard or as client's requirements.
The Process: EAF + LF + VD + Forged + Heat Treatment (optional)
