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JB/T 6402 ZG40Cr Alloy Steel Precision Casting
Symbol |
Chemical composition |
||||||||
|
C max |
Si max |
Mn max |
P max |
S max |
Cr max |
Ni max |
Mo |
Cu |
ZG40Cr |
0.35~0.45 |
0.50~0.80 |
0.20~0.40 |
≤0.035 |
≤0.035 |
0.80~1.10 |
- |
|
- |
JB/T 6402 ZG40Cr 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 |
|||||
ZG40Cr |
Normalizing+Temper |
345 |
630 |
18 |
26 |
- |
≤212 |
|
Hardening and Tempering |
345~540 |
590~735 |
8~15 |
30~45 |
16~39 |
217~286 |