|
第八节 冷镦钢和螺栓用钢
一、日本JIS标准冷镦用碳钢盘条的钢号与化学成分[JIS G3507(1991)](表4-3-46)
表4-3-46 冷镦用碳钢盘条的钢号与化学成分(质量分数)(%)
| 钢号 |
C |
Si |
Mn |
P≤ |
S≤ |
Al |
| 沸腾钢 |
|
SWRCH6R
SWRCH8R
SWRCH10R
SWRCH12R
SWRCH15R
SWRCH17R |
≤0.08
≤0.10
0.08-0.13
0.10-0.15
0.13-0.18
0.15-0.20
|
-
-
-
-
-
- |
≤0.60
≤0.60
0.60-0.60
0.60-0.60
0.60-0.60
0.60-0.60 |
0.040
0.040
0.040
0.040
0.040
0.040 |
0.040
0.040
0.040
0.040
0.040
0.040 |
-
-
-
-
-
- |
| 铝镇静钢 |
|
SWRCH6A
SWRCH8A
SWRCH10A
SWRCH12A
SWRCH15A
SWRCH16A
SWRCH18A
SWRCH19A
SWRCH20A
SWRCH22A |
≤0.08
≤0.10
0.08-0.13
0.10-0.15
0.13-0.18
0.13-0.18
0.15-0.20
0.15-0.20
0.18-0.20
0.18-0.23
|
≤0.10
≤0.10
≤0.10
≤0.10
≤0.10
≤0.10
≤0.10
≤0.10
≤0.10
≤0.10 |
≤0.60
≤0.60
0.60-0.60
0.60-0.60
0.60-0.60
0.60-0.90
0.60-0.90
0.70-1.00
0.30-0.60
0.70-1.00 |
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030 |
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035 |
≤0.02
≤0.02
≤0.02
≤0.02
≤0.02
≤0.02
≤0.02
≤0.02
≤0.02
≤0.02 |
| 镇静钢 |
|
SWRCH10K
SWRCH12K
SWRCH15K
SWRCH16K
SWRCH17K
SWRCH18K
SWRCH20K
SWRCH22K
SWRCH24K
SWRCH25K
SWRCH27K
SWRCH30K
SWRCH33K
SWRCH35K
SWRCH38K
SWRCH40K
SWRCH41K
SWRCH43K
SWRCH45K
SWRCH48K
SWRCH50K |
0.08-0.13
0.10-0.15
0.13-0.18
0.13-0.18
0.15-0.20
0.15-0.20
0.18-0.23
0.18-0.23
0.19-0.25
0.22-0.28
0.22-0.29
0.27-0.33
0.30-0.36
0.32-0.38
0.35-0.41
0.37-0.43
0.36-0.44
0.40-0.46
0.42-0.48
0.45-0.51
0.47-0.53 |
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35
0.10-0.35 |
0.30-0.60
0.30-0.60
0.30-0.60
0.60-0.90
0.30-0.60
0.60-0.90
0.30-0.60
0.70-1.00
1.35-1.65
0.30-0.60
1.20-1.50
0.60-0.90
0.60-0.90
0.60-0.90
0.60-0.90
0.60-0.90
1.35-1.65
0.60-0.90
0.60-0.90
0.60-0.90
0.60-0.90
|
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030 |
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035
0.035 |
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
|
二、日本JIS标准冷镦用碳钢钢丝的钢号与力学性能[JIS G3539(1991)](表4-3-47)
1.经D工序的碳钢钢丝的钢号与力学性能,见表4-3-47
表4-3-47 经D工序的碳钢钢丝的钢号与力学性能
| 钢号 |
钢丝直径 |
抗拉强度Ъ
/MPa |
面缩率φ
% |
伸长率δ
% |
硬度
HRB
|
|
SWCH6R
SWCH8R
SWCH10R
SWCH6A
SWCH8A
SWCH10A
|
≤3 |
≥540 |
≥45 |
- |
- |
| >3-4 |
≥440 |
≥45 |
- |
- |
| >4-5 |
≥390 |
≥45 |
- |
- |
| >5 |
≥340 |
≥45 |
≥11 |
≤85 |
|
SWCH12R
SWCH15R
SWCH12A
SWCH15A
SWCH12K
SWCH15K
|
≤3 |
≥590 |
≥45 |
- |
- |
| >3-4 |
≥490 |
≥45 |
- |
- |
| >4-5 |
≥410 |
≥45 |
- |
- |
| >5 |
≥360 |
≥45 |
≥10 |
≤90 |
|
SWCH17R
SWCH16A
SWCH18A
SWCH20A
SWCH15K
|
≤3 |
≥690 |
≥45 |
- |
- |
| >3-4 |
≥590 |
≥45 |
- |
- |
| >4-5 |
≥490 |
≥45 |
- |
- |
| >5 |
≥410 |
≥45 |
≥7 |
≤95 |
|
SWCH19A
SWCH16K
SWCH17K
SWCH18K
SWCH20K |
≤3 |
≥640 |
≥45 |
- |
- |
| >4-5 |
≥540 |
≥45 |
- |
- |
| >5-30 |
≥440 |
≥45 |
≥7 |
≤95 |
|
SWCH22A
SWCH22K
SWCH25K |
>3-4 |
≥690 |
≥45 |
- |
- |
| >4-5 |
≥570 |
≥45 |
- |
- |
| >5 |
≥470 |
≥45 |
≥6 |
≤98 |
注:1.D工序是将盘条冷拉精加工,盘条的化学成分见表4-3-46。
2.表中的伸长率和硬度为参考值。
2.经DA工序的碳钢钢丝的力学性能,见表4-3-48。
表4-3-48 经DA工序的碳钢钢丝的力学性能
| 钢号 |
抗拉强度Ъ
/MPa |
面缩率φ
% |
伸长率δ
% |
硬度
HRB
|
|
SWCH6R
SWCH8R
|
≥290
|
≥55 |
≥15 |
≤80 |
|
SWCH6A
SWCH8A
|
≥290 |
≥55 |
≥15 |
≤80 |
|
SWCH10R
SWCH10A |
≥290 |
≥55 |
≥14 |
≤83 |
|
SWCH12R
SWCH15R
|
≥340 |
≥55 |
≥14 |
≤83 |
|
SWCH12A
SWCH15A
|
≥340 |
≥55 |
≥14 |
≤83 |
|
SWCH10A
SWCH12A
|
≥340 |
≥55 |
≥14 |
≤83 |
|
SWCH17A
SWCH15K
|
≥370 |
≥55 |
≥13 |
≤85 |
|
SWCH16A
SWCH18A
|
≥370 |
≥55 |
≥13 |
≤85 |
| SWCH20A |
≥370 |
≥55 |
≥13 |
≤85 |
|
SWCH19A
SWCH16K
|
≥410 |
≥55 |
≥13 |
≤86 |
|
SWCH17K
SWCH18K
|
≥410 |
≥55 |
≥13 |
≤86 |
| SWCH20K |
≥410 |
≥55 |
≥13 |
≤86 |
|
SWCH22A
SWCH22K
|
≥440 |
≥55 |
≥12 |
≤88 |
| SWCH25K |
≥440 |
≥55 |
≥12 |
≤88 |
|
SWCH24K
SWCH27K
|
≥470 |
≥55 |
≥12 |
≤92 |
|
SWCH30K
SWCH33K
|
≥620 |
≥55 |
≥12 |
≤92 |
| SWCH35K |
≥620 |
≥55 |
≥12 |
≤92 |
|
SWCH38K
SWCH40K
|
≥670 |
≥55 |
≥11 |
≤94 |
| SWCH43K |
≥670 |
≥55 |
≥11 |
≤94 |
|
SWCH41K
SWCH45K
|
≥710 |
≥55 |
≥10 |
≤97 |
|
SWCH48K
SWCH50K
|
≥710 |
≥55 |
≥10 |
≤97 |
注:1.DA工序是将盘条冷拉后进行退火,然后再冷拉精加工,盘条的化学成分见表4-3-46。
2.表中的伸长率和硬度为参考值。
3.对于SWCH27以下的低碳钢丝,若成品是用于热处理的钢丝,其抗拉强度的下限经协议后允许低于本表的规定值。
三、日本JIS标准螺栓用钢的钢号、化学成分与力学性能JIS G4108(1994)]
1.JIS日本标准螺栓用钢的钢号与钢锭化学成分,见表4-3-49
表4-3-49 螺栓用钢的钢号与钢锭化学成分(质量分数)(%)
| 钢号 |
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Ni |
Mo |
其他 |
| 高温螺栓用合金钢 |
|
SNB5
SNB7
SNB16 |
≥0.10
0.38-0.48
0.36-0.44 |
≤1.00
0.20-0.35
0.20-0.35 |
≤1.00
0.75-1.00
0.45-0.70 |
0.040
0.040
0.040 |
0.040
0.040
0.040 |
4.00-6.00
0.80-1.10
0.80-1.15 |
-
-
- |
0.40-0.65
0.15-0.25
0.50-0.65 |
-
-
V0.25-0.35 |
| 特殊用途螺栓用合金钢 |
|
SNB21-1-5
SNB22-1-5
SNB23-1-5
SNB24-1-5 |
0.36-0.44
0.39-0.46
0.37-0.44
0.37-0.44 |
0.20-0.35
0.20-0.35
0.20-0.35
0.20-0.35 |
0.45-0.70
0.65-1.10
0.65-0.95
0.70-0.90 |
0.025
0.025
0.025
0.025 |
0.025
0.025
0.025
0.025 |
0.80-1.15
0.75-1.20
0.65-0.95
0.70-0.95 |
-
-
1.55-2.00
1.65-2.00 |
0.50-0.65
0.15-0.25
0.20-0.30
0.30-0.40 |
V0.25-0.35
-
-
- |
2.JIS标准螺栓用钢制成品的钢号与化学成分,见表4-3-50
表4-3-50 螺栓用钢制成品的钢号与化学成分(质量分数)(%)
| 钢号 |
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Ni |
Mo |
其他 |
| 高温螺栓用合金钢 |
| SNB5
SNB7
SNB16 |
≥0.10
0.36-0.50
0.34-0.46 |
≤1.05
0.18-0.37
0.18-0.37 |
≤1.03
0.71-1.04
0.42-0.73 |
0.045
0.045
0.045 |
0.045
0.045
0.045 |
3.90-6.10
0.75-1.15
0.75-1.20 |
-
-
- |
0.35-0.70
0.13-0.27
0.47-0.68 |
-
-
V0.22-0.38 |
| 特殊用途螺栓用合金钢 |
| SNB21-1-5
SNB22-1-5
SNB23-1-5
SNB24-1-5 |
0.34-0.46
0.37-0.48
0.35-0.46
0.35-0.46 |
0.18-0.37
0.18-0.37
0.18-0.37
0.18-0.37 |
0.42-0.73
0.61-1.14
0.56-0.99
0.66-0.94 |
0.030
0.030
0.030
0.030 |
0.030
0.030
0.030
0.030 |
0.75-1.20
0.75-1.25
0.60-1.00
0.65-1.00 |
-
-
1.50-2.05
1.60-2.05 |
0.47-0.68
0.13-0.27
0.18-0.32
0.28-0.42 |
V0.22-0.39
-
-
- |
3.JIS标准螺栓用钢的力学性能与硬度,见表4-3-51。
表4-3-51 螺栓用钢的力学性能与硬度
| 钢号 |
直径/mm |
力学性能(不小于) |
硬度
HBS |
|
Ъ
/MPa |
σs
/MPa |
δ
% |
φ
%
|
Ak①
/J |
| SNB5 |
<100 |
690 |
550 |
16 |
50 |
- |
- |
| SNB7 |
<63
63-100
100-120 |
860
800
690 |
725
655
520 |
16
16
18 |
50
50
50 |
-
-
- |
-
-
- |
| SNB16 |
<63
63-100
100-120 |
860
760
690 |
725
655
590 |
18
17
16 |
50
50
50 |
-
-
- |
-
-
- |
| SNB21-1 |
<100 |
1140 |
1030 |
10 |
35 |
- |
321-429 |
| SNB21-2 |
<100 |
1070 |
960 |
11 |
40 |
- |
311-401 |
| SNB21-2 |
<75
75-150 |
1000
1000 |
890
890 |
12
12 |
40
40 |
-
- |
293-352
302-375 |
| SNB21-4 |
<75
75-150 |
930
930 |
825
825 |
13
13 |
45
45 |
-
- |
269-331
277-352 |
| SNB21-5 |
<75
50-150
150-200 |
820
790
790 |
715
685
685 |
15
15
15 |
50
50
50 |
-
-
- |
241-285
248-302
255-311 |
|
SNB22-1
SNB22-2 |
<38
<75 |
1140
1070 |
1030
690 |
10
11 |
35
40 |
-
- |
321-401
311-401 |
| SNB22-3 |
<50
50-100 |
1000
1000 |
890
890 |
12
12 |
40
40 |
-
- |
293-363 |
|
302-375
SNB22-4 |
<25
25-100 |
930
930 |
825
825 |
13
13 |
45
45 |
47
- |
269-341
277-363 |
| SNB22-5 |
<50
50-100 |
820
790 |
715
685 |
15
15 |
50
50 |
47
- |
248-293
255-302 |
| SNB23-1 |
<75
50-150
150-200 |
1140
1140
1140 |
1030
1030
1030 |
10
10
10 |
35
35
35 |
-
-
- |
321-415
331-429
341-444 |
| SNB23-2 |
<75
50-150
150-240 |
1070
1070
1070 |
960
960
960 |
11
11
11 |
40
40
40 |
40
-
- |
311-388
311-401
321-415 |
| SNB23-3 |
<75
50-150
150-240 |
1000
1000
1000 |
890
890
890 |
12
12
12 |
40
40
40 |
40
-
- |
293-363
302-375
311-388 |
| SNB23-4 |
<75
50-150
150-240 |
930
930
930 |
825
825
825 |
13
13
13 |
45
45
45 |
47
-
- |
269-341
277-352
285-363 |
| SNB23-5 |
<150
150-200
200-240
|
820
790
790
|
715
685
685 |
15
15
15 |
50
50
50 |
47
-
- |
248-311
255-321
262-321 |
| SNB24-1 |
<150
50-150
|
1140
1140 |
1030
1030 |
10
10 |
35
35 |
34
- |
321-415
331-429 |
| SNB24-2 |
<175
175-240 |
1070
1070 |
960
960 |
11
11 |
40
40 |
40
- |
311-401
321-415 |
| SNB24-3 |
<75
75-200
200-240 |
1000
1000
1000 |
890
890
890 |
12
12
12 |
40
40
40 |
40
-
- |
293-263
302-388
311-388 |
| SNB24-4 |
<75
75-150
150-200
200-240 |
930
930
930
930 |
825
825
825
825 |
13
13
13
13 |
45
45
45
45 |
47
47
-
- |
269-341
277-352
285-363
293-363 |
| SNB24-5 |
<150
150-200
200-240 |
820
790
790 |
715
685
685 |
15
15
15 |
50
50
50 |
47
47
47 |
248-311
255-321
262-321 |
①取3个试样的平均值。 |