类别
|
C
|
Cr
|
Ni
|
Co
|
Mo
|
Al
|
Ti
|
Fe
|
||||||||
标准
|
≤0.08
|
17.0~21.0
|
50.0~55.0
|
≤1.0
|
2.80~3.30
|
0.30~0.70
|
0.75~1.15
|
余
|
||||||||
|
|
不大于
|
||||||||||||||
标准
|
4.75~5.50
|
0.006
|
0.01
|
0.35
|
0.35
|
0.015
|
0.015
|
0.30
|
0.01
|
规格
d/mm
|
取样方向
|
θ/℃
|
拉伸性能 不小于
|
HBS
|
持久性能
|
|||||
σP0.2/MPa
|
σb/MPa
|
δ5/%
|
ψ/%
|
σ/MPa
|
t/h
|
δ5/%
|
||||
≤125
|
纵向
|
20
650
|
1030
860
|
1280
1000
|
12
12
|
15
15
|
≥346
---
|
---
690
|
---
≥25
|
---
≥5
|