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JB/T 6402 ZG20CrMo Alloy Steel Precision Casting
Symbol |
Chemical composition |
||||||||
|
C max |
Si max |
Mn max |
P max |
S max |
Cr max |
Ni max |
Mo |
Cu |
ZG20CrMo |
0.17~0.25 |
0.20~0.45 |
0.50~0.80 |
≤0.035 |
≤0.035 |
0.50~0.80 |
- |
0.40~0.60 |
- |
JB/T 6402 ZG20CrMo precision castings chemical composition unit
Symbol |
Heat Treatment Condition |
Yield point or proof stress N/mm2 |
Tensile strength N/mm2 |
Elongation % min |
According to the contract |
||
Transverse Shrinkage Z/% |
Impact Toughness KU2/J |
Hardness |
|||||
ZG20CrMo |
Normalizing+Temper |
- |
- |
- |
- |
- |
- |
|
Hardening and Tempering |
245 |
460 |
18 |
30 |
24 |
≤197 |