| 第二节 不锈、耐蚀铸钢
(1)日本JIS标准不锈、耐蚀铸钢的牌号与化学成分[JIS G5121(1991)](表7-3-10)
表7-3-10 不锈、耐蚀铸钢的牌号与化学成分
| 钢号① |
C |
Si |
Mn |
P
≤ |
S
≤ |
Cr |
Ni |
Mo |
其他 |
| SCS1 |
≤0.15 |
≤1.50 |
≤1.00 |
0.040 |
0.040 |
11.50-14.00 |
≤1.00 |
≤0.50 |
— |
| SCS2 |
0.16-0.24 |
≤1.50 |
≤1.00 |
0.040 |
0.040 |
11.50-14.00 |
≤1.00 |
≤0.50 |
— |
| SCS2A |
0.25-0.40 |
≤1.50 |
≤1.00 |
0.040 |
0.040 |
11.50-14.00 |
≤1.00 |
≤0.50 |
— |
| SCS3 |
≤0.15 |
≤1.00 |
≤1.00 |
0.040 |
0.040 |
11.50-14.00 |
0.50-1.50 |
0.15-1.00 |
— |
| SCS4 |
≤0.15 |
≤1.50 |
≤1.00 |
0.040 |
0.040 |
11.50-14.00 |
1.50-2.50 |
— |
— |
| SCS5 |
≤0.06 |
≤1.00 |
<1.00 |
0.040 |
0.040 |
11.50-14.00 |
3.50-4.50 |
— |
— |
| SCS6 |
≤0.06 |
≤1.00 |
≤1.00 |
0.040 |
0.040 |
11.50-14.00 |
3.50-4.50 |
0.40-1.00 |
— |
| SCS10 |
≤0.03 |
≤1.50 |
≤1.50 |
0.040 |
0.040 |
21.00-26.00 |
4.50-8.50 |
2.50-4.00 |
N0.08-0.30③ |
| SCS11 |
≤0.08 |
≤1.50 |
≤1.00 |
0.040 |
0.040 |
23.00-27.00 |
4.00-7.00 |
1.50-2.50 |
—③ |
| SCS12 |
≤0.20 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
18.00-21.00 |
8.00-11.00 |
— |
— |
| SCS13 |
≤0.08 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
18.00-21.00② |
8.00-11.00 |
— |
— |
| SCS13A |
≤0.08 |
≤2.00 |
≤1.50 |
0.040 |
0.040 |
18.00-21.00② |
8.00-11.00 |
— |
— |
| SCS14 |
≤0.08 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
17.00-20.00② |
10.00-14.00 |
2.00-3.00 |
— |
| SCS14A |
≤0.08 |
≤1.50 |
≤1.50 |
0.040 |
0.040 |
18.00-21.00② |
9.00-12.00 |
2.00-3.00 |
— |
| SCS15 |
≤0.08 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
17.00-20.00 |
10.00-14.00 |
1.75-2.75 |
Cu1.00-2.50 |
| SCS16 |
≤0.03 |
≤1.50 |
≤2.00 |
0.040 |
0.040 |
17.00-20.00 |
12.00-16.00 |
2.00-3.00 |
— |
| SCS16A |
≤0.03 |
≤1.50 |
≤1.50 |
0.040 |
0.040 |
17.00-20.00 |
9.00-13.00 |
2.00-3.00 |
— |
| SCS17 |
≤0.20 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
22.00-26.00 |
12.00-15.00 |
— |
— |
| SCS18 |
≤0.20 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
23.00-27.00 |
19.00-22.00 |
— |
— |
| SCS19 |
≤0.03 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
17.00-21.00 |
8.00-12.00 |
— |
— |
| SCS19A |
≤0.03 |
≤2.00 |
≤1.50 |
0.040 |
0.040 |
17.00-21.00 |
8.00-12.00 |
— |
— |
| SCS20 |
≤0.03 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
17.00-20.00 |
12.00-16.00 |
1.75-2.75 |
Cu1.00-2.50 |
| SCS21 |
≤0.08 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
18.00-21.00 |
9.00-12.00 |
— |
Nb≥10*C |
| |
|
|
|
|
|
|
|
|
≤1.35 |
| SCS22 |
≤0.08 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
17.00-20.00 |
10.00-14.00 |
2.00-3.00 |
Nb≥10*C |
| |
|
|
|
|
|
|
|
|
≤1.35 |
| SCS23 |
≤0.07 |
≤2.00 |
≤2.00 |
0.040 |
0.040 |
19.00-22.00 |
27.50-30.00 |
2.00-3.00 |
Cu3.00-4.00 |
| |
|
|
|
|
|
|
|
|
Cu2.50-4.00 |
| SCS24 |
≤0.07 |
≤1.00 |
≤1.00 |
0.040 |
0.040 |
15.50-17.50 |
3.50-5.00 |
— |
Nb0.15-0.45 |
①SCS1-SCS6为工程结构用中、高强度马氏体不锈钢。
②当用于低温时ω(Cr)18.00%-23.00%。
③必要时可添加其他元素。
(2)日本JIS标准不锈、耐蚀铸钢的力学性能(表7-3-11)。
表7-3-11 不锈、耐蚀铸钢的力学性能
| 钢号 |
热处理条件℃ |
力学性能(不小于) |
硬度HBS |
| 淬火① |
回火② |
固溶处理② |
σb/MPa |
σS⑤/MPa |
δ
(%) |
Ψ
(%) |
| SCS1(T1) |
≥950 |
680-740 |
— |
540 |
345 |
18 |
40 |
163-229 |
| (T2) |
≥950 |
590-700 |
— |
620 |
450 |
16 |
30 |
179-241 |
| SCS2 |
≥950 |
680-740 |
— |
590 |
390 |
16 |
35 |
170-235 |
| SCS2A |
≥950 |
≥600 |
— |
690 |
480 |
15 |
25 |
≤269 |
| SCS3 |
≥900 |
650-740 |
— |
590 |
440 |
16 |
40 |
170-235 |
| SCS4 |
≥900 |
650-740 |
— |
640 |
490 |
13 |
40 |
192-255 |
| SCS5 |
≥900 |
600-700 |
— |
740 |
540 |
13 |
40 |
217-277 |
| SCS6 |
≥900 |
570-620 |
— |
750 |
550 |
15 |
35 |
≤285 |
| SCS10 |
— |
— |
1050-1150 |
620 |
390 |
15 |
— |
≤302 |
| SCS11 |
— |
— |
1030-1150 |
590 |
345 |
13 |
— |
≤241 |
| SCS12 |
— |
— |
1030-1150 |
480 |
205 |
28 |
— |
≤183 |
| SCS13 |
— |
— |
1030-1150 |
440 |
185 |
30 |
— |
≤183 |
| SCS13A |
— |
— |
1030-1150 |
480 |
205 |
33 |
— |
≤183 |
| SCS14 |
— |
— |
1030-1150 |
440 |
175 |
28 |
— |
≤183 |
| SCS14A |
— |
— |
1030-1150 |
480 |
205 |
33 |
— |
≤183 |
| SCS15 |
— |
— |
1030-1150 |
440 |
185 |
28 |
— |
≤183 |
| SCS16 |
— |
— |
1030-1150 |
390 |
175 |
33 |
— |
≤183 |
| SCS16A |
— |
— |
1030-1150 |
480 |
205 |
33 |
— |
≤183 |
| SCS17 |
— |
— |
1050-1160 |
480 |
205 |
28 |
— |
≤183 |
| SCS18 |
— |
— |
1070-1180 |
450 |
195 |
28 |
— |
≤183 |
| SCS19 |
— |
— |
1030-1150 |
390 |
285 |
33 |
— |
≤183 |
| SCS19A |
— |
— |
1030-1150 |
480 |
205 |
33 |
— |
≤183 |
| SCS20 |
— |
— |
1030-1150 |
390 |
175 |
33 |
— |
≤183 |
| SCS21 |
— |
— |
1030-1150 |
480 |
205 |
28 |
— |
≤183 |
| SCS22 |
— |
— |
1030-1150 |
440 |
205 |
28 |
— |
≤183 |
| SCS23 |
— |
— |
1070-1180 |
390 |
165 |
30 |
— |
≤183 |
| SCS24 |
符号 |
固溶处理℃ |
时效处理℃④ |
|
|
|
|
|
| H900 |
1020-1080 |
475-525*90min |
1240 |
1030 |
6 |
— |
≤375 |
| H1025 |
1020-1080 |
535-585*4h |
980 |
885 |
9 |
— |
≤311 |
| H1075 |
1020-1080 |
565-615*4h |
960 |
785 |
9 |
— |
≤277 |
| H1150 |
1020-1080 |
5-655*4h |
850 |
665 |
10 |
— |
≤269 |
①冷却:油冷或空冷,仅SCS6为空冷。
②冷却:空冷或缓冷。
③冷却:急冷。
④冷却:空冷。
⑤屈服点或屈服强度。
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