序号 | 同一数字 代号 | 牌号 | 化学成分(质量分数)(%) | |||||
C | Si | Mn | Cr | M | Cu | |||
≤ | ||||||||
1 | U20080 | 08F | 0.05~0.11 | ≤0.03 | 0.25~0.50 | 0.10 | 0.30 | 0.25 |
2 | U20l00 | 10F | 0.07~0.13 | ≤0.07 | 0.25~0.50 | 0.15 | 0.30 | 0.25 |
3 | U20150 | 15F | 0.12~0.18 | ≤0.07 | 0.25~0.50 | 0.25 | 0.30 | 0.25 |
4 | U20082 | 08 | 0.05~0.11 | 0.17~0.37 | 0.35~0.65 | 0.10 | 0.30 | 0.25 |
5 | U20102 | lO | 0.07~0.13 | 0.17~0.37 | 0.35~0.65 | 0.15 | 0.30 | 0.25 |
6 | U20152 | 15 | 0.12~0.18 | 0.17~0.37 | 0.35~0.65 | 0.25 | 0.30 | 0.25 |
7 | U20202 | 20 | 0.17~0.23 | 0.17~0.37 | 0.35~0.65 | 0.25 | 0.30 | 0.25 |
8 | U20252 | 25 | 0.22~0.29 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
9 | U20302 | 30 | 0.27~0.34 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
10 | U20352 | 35 | 0.32~0.39 | 0.17~0.37 | 0.50~0.B0 | 0.25 | 0.30 | 0.25 |
11 | U20402 | 40 | 0.37~0.44 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
12 | U20452 | 45 | 0.42_0.50 | 0.17~0.37 | 0.50~0.80 | 0.25 | O.30 | 0.25 |
13 | U20502 | 50 | 0.47~0.55 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
14 | U20552 | 55 | 0.52~0.60 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
15 | U20602 | 60 | 0.57~0.65 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
16 | U20652 | 65 | 0.62~0.70 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
17 | U20702 | 70 | 0.67~0.75 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
18 | U20752 | 75 | 0.72~0.80 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
19 | U20802 | 80 | 0.77~0.85 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
20 | U20852 | 85 | 0.82~0.90 | 0.17~0.37 | 0.50~0.80 | 0.25 | 0.30 | 0.25 |
21 | U21152 | 15№ | 0.12~0.18 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
22 | U21202 | 20Mn | 0.17~0.23 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
23 | U21252 | 25Mn | 0.22~0.29 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
24 | U21302 | 30Mn | 0.27~0.34 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
25 | U21352 | 35Mn | 0.32~0.39 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
26 | U21402 | 40Mn | 0.37~0.44 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
27 | U21452 | 45Mn | 0.42~0.50 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
28 | U21502 | 50Mn | 0.48~0.56 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
29 | U21602 | 60Mn | 0.57~0.65 | 0.17~0.37 | 0.70~1.00 | 0.25 | 0.30 | 0.25 |
30 | U21652 | 65Mn | 0.62~0.70 | 0.17~0.37 | 0.90~1.20 | 0.25 | 0.30 | 0.25 |
3l | U21702 | 70MN | 0.67~0.75 | 0.17~0.37 | 0.90~1.20 | 0.25 | 0.30 | 0.25 |
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牌号 | 试样毛坯尺寸/mm | 推荐热处理/℃ | 力学性能 | 钢材交货状态硬度HBSl0/300≤ | |||||||||||||
正火 | 淬火 | 回火 | ób/MPa | ós/MPa | δ5(%) | Ψ(%) | AKu2/J | ||||||||||
≥ | 未热处理钢 | 退火钢 | |||||||||||||||
08F | 25 | 930 | 295 | 175 | 35 | 60 | 13l | ||||||||||
10F | 25 | 930 | 315 | 185 | 33 | 55 | 137 | ||||||||||
15F | 25 | 920 | 355 | 205 | 29 | 55 | 143 | ||||||||||
08 | 25 | 930 | 325 | 195 | 33 | 60 | 131 | ||||||||||
IO | 篮 | 930 | 335 | 205 | 3l | 55 | 137 | ||||||||||
15 | 25 | 920 | 375 | 225 | 27 | 55 | 143 | ||||||||||
20 | 25 | 910 | 4lO | 245 | 25 | 55 | 156 | ||||||||||
25 | 25 | 900 | 870 | 600 | 450 | 275 | 23 | 50 | 71 | 170 | |||||||
30 | 25 | 880 | 860 | 600 | 490 | 295 | 21 | 50 | 63 | 179 | |||||||
35 | 25 | 870 | 850 | 600 | 530 | 315 | 20 | 45 | 55 | 197 | |||||||
40 | 25 | 860 | 840 | 60D | 570 | 335 | 19 | 45 | 47 | 217 | 187 | ||||||
45 | 25 | 850 | 840 | 600 | 600 | 355 | 16 | 40 | 39 | 229 | 197 | ||||||
50 | 25 | 830 | 830 | 600 | 630 | 375 | 14 | 40 | 31 | 24l | 207 | ||||||
55 | 25 | 820 | 820 | 600 | 645 | 380 | 13 | 35 | 255 | 217 | |||||||
60 | 25 | 810 | 675 | 400 | 12 | 35 | 255 | 229 | |||||||||
65 | 25 | 810 | 695 | 410 | lO | 30 | 255 | 229 | |||||||||
70 | 25 | 790 | 715 | 420 | 9 | 30 | 269 | 229 | |||||||||
75 | 试样 | 820 | 480 | 1080 | 880 | 7 | 30 | 285 | 24l | ||||||||
80 | 试样 | 820 | 480 | 1080 | 930 | 6 | 30 | 285 | 241 | ||||||||
85 | 试样 | 820 | 480 | 1130 | 980 | 6 | 30 | 302 | 255 | ||||||||
15Mn | 25 | 920 | 410 | 245 | 26 | 55 | 163 | ||||||||||
20Mn | 25 | 910 | 450 | 275 | 24 | 50 | 197 | ||||||||||
25Mn | 25 | 900 | 870 | 600 | 490 | 295 | 22 | 50 | 71 | 207 | |||||||
30Mn | 25 | 880 | 860 | 600 | 540 | 315 | 20 | 45 | 63 | 217 | 187 | ||||||
35Mn | 25 | 870 | 850 | 600 | 560 | 335 | 18 | 45 | 55 | 229 | 197 | ||||||
40Mn | 25 | 860 | 840 | 600 | 590 | 355 | 17 | 45 | 47 | 229 | 207 | ||||||
45Mn | 25 | 850 | 840 | 600 | 620 | 375 | 15 | 40 | 39 | 241 | 217 | ||||||
50Mn | 25 | 830 | 830 | 600 | 645 | 390 | 13 | 40 | 3l | 255 | 217 | ||||||
60Mn | 25 | 810 | 695 | 410 | 11 | 35 | 269 | 229 | |||||||||
65Mn | 25 | 830 | 735 | 430 | 9 | 30 | 285 | 229 | |||||||||
70Mn | 25 | 790 | 785 | 450 | 8 | 30 | 285 | 229 |
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