牌号 |
物理性能
Mechanicai properities |
||
硬度:退火
|
压痕直径
|
淬火
|
|
T8A
|
≤187HB
|
≥4.40mm
|
≥62HRC
|
牌号
|
化学成分(重量百分比)
Chemicail composition(WT%) |
||||
碳
(C) |
锰
(Mn) |
硅
(Si) |
硫
(S) |
硫
(S) |
|
Q215
|
0.09-0.15
|
0.25-0.55
|
≦0.30
|
(A级)≦0.045(B级)
|
≦0.045
|
牌号
|
化学成分(重量百分比)
Chemicail composition(WT%) |
|||||||
碳
(C) |
硅
(Si) |
锰
(Mn) |
硫
(S) |
磷
(P) |
铬
(Cr) |
镍
(Ni) |
铜
(Cu) |
|
T8A
|
0.75~0.84
|
≤0.35
|
≤0.40
|
≤0.02
|
≤0.03
|
≤0.25、≤0.10
|
≤0.20、≤0.12
|
≤0.30、≤0.20
|