2014-09-10 11:02:52 Origin： Remark：0 Click：
Si (％): 0.25 ~ 0.50
Mn (％): 0.60 ~ 0.80
P (％)≤: 0.030
S (％)≤: 0.030
Cr (％): 0.30 ~ 0.40
Mo (％): -
V (％): -
Annealing temperature /℃: 700～720
Hardness after annealing ≤HBW: 200
Quenching temperature /℃: 770～800
Cooling medium: water
Common tempering temperature /℃: 180～200
Hardness after tempering at temperature HRC|100℃: 66
Hardness after tempering at temperature HRC|200℃: 60
Hardness after tempering at temperature HRC|300℃: 52
Hardness after tempering at temperature HRC|400℃: 43
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