| 国内阀门材料常用技术标准 经热处理的马氏体型钢棒或试样的力学性能 |
| |
|
GB/T
20878
中序号
|
统一
数字
代号
|
新 牌 号
|
旧 牌 号
|
组别
|
经淬火回火（见表A.4）后试样的力学性能和硬度
|
退火后钢棒的硬度c
|
|
规定非比例延伸
强度Rp0.2/（N/mm2)
|
抗拉强度Rm
/（N/mm2)
|
断后伸长率
A/%
|
断面收缩率
Zb/%
|
冲击吸收功Aku2d
/J
|
HBW
|
HRC
|
HBW
|
|
不 小 于
|
不 大 于
|
|
96
|
S40310
|
12Cr12
|
1Cr12
|
|
390
|
590
|
25
|
55
|
118
|
170
|
—
|
200
|
|
97
|
S41008
|
06Cr13
|
0Cr13
|
|
345
|
490
|
24
|
60
|
|
|
—
|
183
|
|
98
|
S41010
|
12Cr13
|
1Cr13
|
|
345
|
540
|
22
|
55
|
78
|
159
|
—
|
200
|
|
100
|
S41617
|
Y12Cr13
|
Y1Cr13
|
|
345
|
540
|
17
|
45
|
55
|
159
|
—
|
200
|
|
101
|
S42020
|
20Cr13
|
2Cr13
|
|
440
|
640
|
20
|
50
|
63
|
192
|
—
|
223
|
|
102
|
S42030
|
30Cr13
|
3Cr13
|
|
540
|
735
|
12
|
40
|
24
|
217
|
—
|
235
|
|
103
|
S42037
|
Y30Cr13
|
Y3Cr13
|
|
540
|
735
|
8
|
35
|
24
|
217
|
—
|
235
|
|
104
|
S42040
|
40Cr13
|
4Cr13
|
|
—
|
—
|
—
|
—
|
—
|
—
|
50
|
235
|
|
106
|
S43110
|
14Cr17Ni2
|
1Cr17Ni2
|
|
|
1080
|
10
|
—
|
39
|
—
|
—
|
285
|
|
107
|
S43120
|
17Cr16Ni2e
|
|
1
|
700
|
900～1050
|
12
|
45
|
25
|
—
|
—
|
295
|
|
2
|
600
|
800～950
|
14
|
|
108
|
S44070
|
68Cr17
|
7Cr17
|
|
—
|
—
|
—
|
—
|
—
|
—
|
54
|
255
|
|
109
|
S44080
|
85Cr17
|
8Cr17
|
|
—
|
—
|
—
|
—
|
—
|
—
|
56
|
255
|
|
110
|
S44096
|
108Cr17
|
11Cr17
|
|
—
|
—
|
—
|
—
|
—
|
—
|
58
|
269
|
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