钢种
|
元素
|
|||||||
C
|
Si
|
Mn
|
S
|
P
|
Al
|
N
|
V
|
|
30Mn20Al3
|
0.20~0.40
|
≤0.55
|
18.00~22.00
|
≤0.015
|
≤0.050
|
2.00~3.00
|
≤0.080
|
-
|
45Mn17Al3
|
0.40~0.50
|
≤0.60
|
16.00~18.00
|
≤0.040
|
≤0.030
|
2.40~3.60
|
-
|
-
|
20Mn23AlV
|
0.14~0.20
|
≤0.50
|
21.50~25.00
|
≤0.030
|
≤0.030
|
1.50~2.50
|
-
|
0.04~0.10
|
钢种
|
抗拉强度(MPa)
|
屈服强度(MPa)
|
延伸率(δ5%)
|
冷弯
(180°d=2a)
|
磁导率
(高/奥)
|
20Mn23AlV
|
≥530
|
≥300
|
30
|
合格
|
≤1.05
|
45Mn17Al3
|
≥530
|
≥300
|
25
|
合格
|
≤1.05
|
30Mn20Al3
|
≥530
|
≥255
|
30
|
合格
|
≤1.05
|
钢种
|
元素
|
||||||
C
|
Si
|
Mn
|
S
|
P
|
Cr
|
V
|
|
40Mn18Cr3
|
0.20~0.40
|
≤0.55
|
18.00~22.00
|
≤0.015
|
≤0.050
|
2.00~3.50
|
-
|
40Mn18Cr4V
|
0.30~0.40
|
0.30~0.60
|
17.00~19.00
|
≤0.020
|
≤0.060
|
3.500~5.00
|
1.30~1.80
|
50Mn18Cr4V
|
0.40~0.60
|
0.30~0.60
|
17.00~19.00
|
≤0.020
|
≤0.060
|
3.500~5.00
|
1.30~1.80
|
热处理制度
|
力学性能
|
|||||
固溶温度
|
时效温度
|
时效时间
|
Rm
|
Rp0.2
|
A%
|
Z%
|
1100℃×Xh固溶,空冷
|
610℃
|
Xh,空冷
|
1030
|
690
|
44
|
54
|
1040
|
685
|
41.5
|
54
|
|||
640℃
|
1050
|
725
|
36
|
51.5
|
||
1050
|
710
|
36
|
47
|
|||
670℃
|
1110
|
785
|
24
|
44
|
||
1130
|
810
|
28
|
34.5
|
|||
700℃
|
1080
|
665
|
28.5
|
44
|
||
1110
|
700
|
26.0
|
42.5
|
|||
730℃
|
1070
|
570
|
26.0
|
31.5
|
||
1070
|
575
|
26.0
|
40.5
|
|||
760℃
|
1010
|
495
|
32.0
|
35.5
|
||
1000
|
495
|
35.5
|
43.0
|
|||
790℃
|
1030
|
480
|
33.0
|
35
|
||
1040
|
485
|
33.0
|
43.0
|
|||
1100℃×Xh固溶,空冷
|
925
|
445
|
52
|
56.5
|
||
标准要求1100℃×Xh固溶,空冷
700℃时效,空冷
|
≥
900
|
≥
600
|
≥
8
|
≥
18
|
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