C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Mo
|
V
|
0.35~0.45
|
0.80~1.10
|
0.80~1.10
|
≤0.030
|
≤0.030
|
1.30~1.50
|
0.40~0.60
|
0.20~0.40
|
臨界點(diǎn)
|
Ac1
|
Ac3
|
Ar1
|
Ar3
|
Ms
|
Mf
|
Bs
|
Bf
|
溫度(近似值)/℃
|
792
|
855
|
660
|
770
|
330
|
165
|
420
|
350
|
項(xiàng) 目
|
加熱溫度/℃
|
開鍛溫度/℃
|
終鍛溫度/℃
|
冷卻方式
|
鋼 錠
鋼 坯
|
1160~1180
1100~1150
|
1100~1150
1050~1100
|
≥850
≥850
|
緩冷(砂或坑冷)
緩冷(砂或坑冷)
|