牌号 · 45#
45# 无缝钢管
中碳牌号，切削性稳定可预期，调质响应好。当零件强度要求高于 20# 但又不值得上合金钢时，它是默认选择。
438
在库规格数
Φ95–635
外径范围 (mm)
15–140
壁厚范围 (mm)
GB/T 8162
执行标准
国际牌号对照
| 中国标准 | GB/T 8162 · GB/T 699 |
|---|---|
| 最接近的对应牌号 | AISI 1045 |
| 其他可对标牌号 | EN C45 / 1.0503 |
| 其他可对标牌号 | JIS S45C |
典型性能
| 抗拉强度 | ≥ 600 MPa（正火态，标准下限） |
|---|---|
| 屈服强度 | ≥ 355 MPa（正火态，标准下限） |
| 延伸率 | ≥ 16% |
| 淬透性 | 调质响应良好；可按指定 HB / HRC 交货 |
典型用途
- 轴类、主轴与空心轴
- 由管坯加工的齿轮与链轮毛坯
- 机架与重型结构件
- 替代实心圆钢的空心料——省一道粗车工序
交货状态
交货状态对材料的影响，比多数买家想象的大得多。告诉我们这个零件要干什么，我们来推荐交货状态。
热轧态正火态调质态退火态
45# 在库规格
438 个规格组合，更新于 2026-08-22。库存每天流动——询价时请确认现货。
| 外径 × 壁厚 (mm) | 外径 (英寸) |
|---|---|
| Φ95 × 15 | 3.74″ |
| Φ95 × 23 | 3.74″ |
| Φ102 × 18 | 4.02″ |
| Φ102 × 20 | 4.02″ |
| Φ102 × 30 | 4.02″ |
| Φ108 × 18 | 4.25″ |
| Φ114 × 20 | 4.49″ |
| Φ127 × 26 | 5.00″ |
| Φ127 × 30 | 5.00″ |
| Φ140 × 34 | 5.51″ |
| Φ152 × 18 | 5.98″ |
| Φ152 × 20 | 5.98″ |
| Φ152 × 35 | 5.98″ |
| Φ159 × 24 | 6.26″ |
| Φ159 × 26 | 6.26″ |
| Φ159 × 30 | 6.26″ |
| Φ159 × 35 | 6.26″ |
| Φ168 × 15 | 6.61″ |
| Φ168 × 18 | 6.61″ |
| Φ168 × 30 | 6.61″ |
| Φ168 × 32 | 6.61″ |
| Φ168 × 42 | 6.61″ |
| Φ168 × 50 | 6.61″ |
| Φ178 × 20 | 7.01″ |
| Φ180 × 30 | 7.09″ |
| Φ180 × 32 | 7.09″ |
| Φ180 × 35 | 7.09″ |
| Φ180 × 40 | 7.09″ |
| Φ180 × 45 | 7.09″ |
| Φ180 × 50 | 7.09″ |
| Φ180 × 52 | 7.09″ |
| Φ180 × 55 | 7.09″ |
| Φ188 × 22 | 7.40″ |
| Φ188 × 25 | 7.40″ |
| Φ188 × 30 | 7.40″ |
| Φ194 × 20 | 7.64″ |
| Φ194 × 25 | 7.64″ |
| Φ194 × 28 | 7.64″ |
| Φ194 × 30 | 7.64″ |
| Φ194 × 35 | 7.64″ |
| Φ194 × 40 | 7.64″ |
| Φ194 × 50 | 7.64″ |
| Φ203 × 20 | 7.99″ |
| Φ203 × 26 | 7.99″ |
| Φ203 × 30 | 7.99″ |
| Φ203 × 35 | 7.99″ |
| Φ203 × 37 | 7.99″ |
| Φ203 × 40 | 7.99″ |
| Φ203 × 45 | 7.99″ |
| Φ203 × 55 | 7.99″ |
| Φ203 × 57 | 7.99″ |
| Φ219 × 22 | 8.62″ |
| Φ219 × 25 | 8.62″ |
| Φ219 × 30 | 8.62″ |
| Φ219 × 31 | 8.62″ |
| Φ219 × 32 | 8.62″ |
| Φ219 × 35 | 8.62″ |
| Φ219 × 38 | 8.62″ |
| Φ219 × 40 | 8.62″ |
| Φ219 × 45 | 8.62″ |
| Φ219 × 60 | 8.62″ |
| Φ223 × 45 | 8.78″ |
| Φ224 × 47 | 8.82″ |
| Φ232 × 30 | 9.13″ |
| Φ232 × 32 | 9.13″ |
| Φ232 × 35 | 9.13″ |
| Φ232 × 38 | 9.13″ |
| Φ232 × 40 | 9.13″ |
| Φ232 × 45 | 9.13″ |
| Φ232 × 50 | 9.13″ |
| Φ232 × 55 | 9.13″ |
| Φ232 × 60 | 9.13″ |
| Φ232 × 65 | 9.13″ |
| Φ234.5 × 25.4 | 9.23″ |
| Φ245 × 21 | 9.65″ |
| Φ245 × 22 | 9.65″ |
| Φ245 × 23 | 9.65″ |
| Φ245 × 25 | 9.65″ |
| Φ245 × 37 | 9.65″ |
| Φ245 × 40 | 9.65″ |
| Φ245 × 45 | 9.65″ |
| Φ245 × 50 | 9.65″ |
| Φ245 × 55 | 9.65″ |
| Φ245 × 60 | 9.65″ |
| Φ254 × 23 | 10.00″ |
| Φ254 × 25 | 10.00″ |
| Φ254 × 28 | 10.00″ |
| Φ254 × 32 | 10.00″ |
| Φ254 × 35 | 10.00″ |
| Φ254 × 38 | 10.00″ |
| Φ254 × 40 | 10.00″ |
| Φ254 × 42 | 10.00″ |
| Φ254 × 60 | 10.00″ |
| Φ254 × 75 | 10.00″ |
| Φ258 × 40 | 10.16″ |
| Φ258 × 55 | 10.16″ |
| Φ258 × 60 | 10.16″ |
| Φ265 × 35 | 10.43″ |
| Φ266 × 28 | 10.47″ |
| Φ267 × 38 | 10.51″ |
| Φ269 × 39 | 10.59″ |
| Φ269 × 40 | 10.59″ |
| Φ270 × 55 | 10.63″ |
| Φ273 × 20 | 10.75″ |
| Φ273 × 22 | 10.75″ |
| Φ273 × 25 | 10.75″ |
| Φ273 × 27 | 10.75″ |
| Φ273 × 28 | 10.75″ |
| Φ273 × 30 | 10.75″ |
| Φ273 × 32 | 10.75″ |
| Φ273 × 35 | 10.75″ |
| Φ273 × 38 | 10.75″ |
| Φ273 × 40 | 10.75″ |
| Φ273 × 42 | 10.75″ |
| Φ273 × 50 | 10.75″ |
| Φ273 × 55 | 10.75″ |
| Φ273 × 60 | 10.75″ |
| Φ273 × 65 | 10.75″ |
| Φ273 × 75 | 10.75″ |
| Φ285 × 16 | 11.22″ |
| Φ285 × 23 | 11.22″ |
| Φ285 × 25 | 11.22″ |
| Φ285 × 30 | 11.22″ |
| Φ285 × 31 | 11.22″ |
| Φ285 × 50 | 11.22″ |
| Φ285 × 53 | 11.22″ |
| Φ285 × 55 | 11.22″ |
| Φ285 × 60 | 11.22″ |
| Φ285 × 65 | 11.22″ |
| Φ285 × 70 | 11.22″ |
| Φ299 × 20 | 11.77″ |
| Φ299 × 22 | 11.77″ |
| Φ299 × 27 | 11.77″ |
| Φ299 × 28 | 11.77″ |
| Φ299 × 30 | 11.77″ |
| Φ299 × 32 | 11.77″ |
| Φ299 × 35 | 11.77″ |
| Φ299 × 37 | 11.77″ |
| Φ299 × 40 | 11.77″ |
| Φ299 × 45 | 11.77″ |
| Φ299 × 50 | 11.77″ |
| Φ299 × 55 | 11.77″ |
| Φ299 × 60 | 11.77″ |
| Φ299 × 65 | 11.77″ |
| Φ299 × 70 | 11.77″ |
| Φ299 × 75 | 11.77″ |
| Φ306 × 45 | 12.05″ |
| Φ306 × 55 | 12.05″ |
| Φ325 × 20 | 12.80″ |
| Φ325 × 22 | 12.80″ |
| Φ325 × 24 | 12.80″ |
| Φ325 × 28 | 12.80″ |
| Φ325 × 30 | 12.80″ |
| Φ325 × 32 | 12.80″ |
| Φ325 × 35 | 12.80″ |
| Φ325 × 40 | 12.80″ |
| Φ325 × 50 | 12.80″ |
| Φ325 × 55 | 12.80″ |
| Φ325 × 60 | 12.80″ |
| Φ325 × 62 | 12.80″ |
| Φ325 × 65 | 12.80″ |
| Φ325 × 90 | 12.80″ |
| Φ330 × 30 | 12.99″ |
| Φ330 × 44 | 12.99″ |
| Φ330 × 52 | 12.99″ |
| Φ330 × 53 | 12.99″ |
| Φ330 × 75 | 12.99″ |
| Φ330 × 85 | 12.99″ |
| Φ335 × 45 | 13.19″ |
| Φ340 × 27 | 13.39″ |
| Φ340 × 35 | 13.39″ |
| Φ340 × 62 | 13.39″ |
| Φ345 × 60 | 13.58″ |
| Φ351 × 32 | 13.82″ |
| Φ351 × 35 | 13.82″ |
| Φ351 × 45 | 13.82″ |
| Φ351 × 65 | 13.82″ |
| Φ351 × 85 | 13.82″ |
| Φ356 × 24 | 14.02″ |
| Φ356 × 25 | 14.02″ |
| Φ356 × 26 | 14.02″ |
| Φ356 × 28 | 14.02″ |
| Φ356 × 30 | 14.02″ |
| Φ356 × 32 | 14.02″ |
| Φ356 × 35 | 14.02″ |
| Φ356 × 38 | 14.02″ |
| Φ356 × 40 | 14.02″ |
| Φ356 × 42 | 14.02″ |
| Φ356 × 45 | 14.02″ |
| Φ356 × 50 | 14.02″ |
| Φ356 × 55 | 14.02″ |
| Φ356 × 65 | 14.02″ |
| Φ356 × 70 | 14.02″ |
| Φ356 × 95 | 14.02″ |
| Φ360 × 20 | 14.17″ |
| Φ365 × 37 | 14.37″ |
| Φ368 × 30 | 14.49″ |
| Φ368 × 60 | 14.49″ |
| Φ377 × 20 | 14.84″ |
| Φ377 × 21 | 14.84″ |
| Φ377 × 25 | 14.84″ |
| Φ377 × 28 | 14.84″ |
| Φ377 × 30 | 14.84″ |
| Φ377 × 32 | 14.84″ |
| Φ377 × 35 | 14.84″ |
| Φ377 × 38 | 14.84″ |
| Φ377 × 40 | 14.84″ |
| Φ377 × 42 | 14.84″ |
| Φ377 × 45 | 14.84″ |
| Φ377 × 55 | 14.84″ |
| Φ377 × 65 | 14.84″ |
| Φ377 × 75 | 14.84″ |
| Φ377 × 80 | 14.84″ |
| Φ377 × 85 | 14.84″ |
| Φ377 × 90 | 14.84″ |
| Φ377 × 100 | 14.84″ |
| Φ380 × 48 | 14.96″ |
| Φ385 × 40 | 15.16″ |
| Φ390 × 25 | 15.35″ |
| Φ390 × 30 | 15.35″ |
| Φ390 × 35 | 15.35″ |
| Φ390 × 40 | 15.35″ |
| Φ390 × 45 | 15.35″ |
| Φ390 × 85 | 15.35″ |
| Φ400 × 60 | 15.75″ |
| Φ402 × 16 | 15.83″ |
| Φ402 × 23 | 15.83″ |
| Φ402 × 25 | 15.83″ |
| Φ402 × 30 | 15.83″ |
| Φ402 × 35 | 15.83″ |
| Φ402 × 38 | 15.83″ |
| Φ402 × 40 | 15.83″ |
| Φ402 × 45 | 15.83″ |
| Φ402 × 55 | 15.83″ |
| Φ402 × 70 | 15.83″ |
| Φ402 × 80 | 15.83″ |
| Φ405 × 35 | 15.94″ |
| Φ405 × 37 | 15.94″ |
| Φ405 × 45 | 15.94″ |
| Φ405 × 120 | 15.94″ |
| Φ406 × 20 | 15.98″ |
| Φ406 × 25 | 15.98″ |
| Φ406 × 28 | 15.98″ |
| Φ406 × 30 | 15.98″ |
| Φ406 × 32 | 15.98″ |
| Φ406 × 35 | 15.98″ |
| Φ406 × 38 | 15.98″ |
| Φ406 × 40 | 15.98″ |
| Φ406 × 45 | 15.98″ |
| Φ406 × 47 | 15.98″ |
| Φ406 × 50 | 15.98″ |
| Φ406 × 55 | 15.98″ |
| Φ406 × 57 | 15.98″ |
| Φ406 × 60 | 15.98″ |
| Φ406 × 65 | 15.98″ |
| Φ406 × 70 | 15.98″ |
| Φ406 × 75 | 15.98″ |
| Φ406 × 80 | 15.98″ |
| Φ415 × 28 | 16.34″ |
| Φ415 × 50 | 16.34″ |
| Φ420 × 35 | 16.54″ |
| Φ421 × 44 | 16.57″ |
| Φ426 × 25 | 16.77″ |
| Φ426 × 30 | 16.77″ |
| Φ426 × 35 | 16.77″ |
| Φ426 × 42 | 16.77″ |
| Φ426 × 50 | 16.77″ |
| Φ426 × 52 | 16.77″ |
| Φ426 × 55 | 16.77″ |
| Φ426 × 70 | 16.77″ |
| Φ426 × 75 | 16.77″ |
| Φ426 × 80 | 16.77″ |
| Φ426 × 85 | 16.77″ |
| Φ426 × 90 | 16.77″ |
| Φ426 × 95 | 16.77″ |
| Φ426 × 100 | 16.77″ |
| Φ426 × 110 | 16.77″ |
| Φ426 × 120 | 16.77″ |
| Φ430 × 75 | 16.93″ |
| Φ432 × 40 | 17.01″ |
| Φ436 × 96 | 17.17″ |
| Φ438 × 65 | 17.24″ |
| Φ440 × 25 | 17.32″ |
| Φ440 × 28 | 17.32″ |
| Φ440 × 30 | 17.32″ |
| Φ440 × 40 | 17.32″ |
| Φ440 × 45 | 17.32″ |
| Φ440 × 50 | 17.32″ |
| Φ440 × 75 | 17.32″ |
| Φ440 × 80 | 17.32″ |
| Φ440 × 100 | 17.32″ |
| Φ450 × 40 | 17.72″ |
| Φ450 × 45 | 17.72″ |
| Φ450 × 50 | 17.72″ |
| Φ450 × 75 | 17.72″ |
| Φ450 × 90 | 17.72″ |
| Φ450 × 95 | 17.72″ |
| Φ457 × 20 | 17.99″ |
| Φ457 × 21 | 17.99″ |
| Φ457 × 25 | 17.99″ |
| Φ457 × 26 | 17.99″ |
| Φ457 × 30 | 17.99″ |
| Φ457 × 35 | 17.99″ |
| Φ457 × 37 | 17.99″ |
| Φ457 × 38 | 17.99″ |
| Φ457 × 40 | 17.99″ |
| Φ457 × 45 | 17.99″ |
| Φ457 × 50 | 17.99″ |
| Φ457 × 55 | 17.99″ |
| Φ457 × 60 | 17.99″ |
| Φ457 × 65 | 17.99″ |
| Φ457 × 70 | 17.99″ |
| Φ457 × 75 | 17.99″ |
| Φ457 × 80 | 17.99″ |
| Φ457 × 85 | 17.99″ |
| Φ457 × 100 | 17.99″ |
| Φ460 × 60 | 18.11″ |
| Φ465 × 70 | 18.31″ |
| Φ470 × 35 | 18.50″ |
| Φ470 × 60 | 18.50″ |
| Φ470 × 75 | 18.50″ |
| Φ470 × 80 | 18.50″ |
| Φ471 × 30 | 18.54″ |
| Φ473 × 40 | 18.62″ |
| Φ475 × 45 | 18.70″ |
| Φ475 × 55 | 18.70″ |
| Φ480 × 25 | 18.90″ |
| Φ480 × 27 | 18.90″ |
| Φ480 × 30 | 18.90″ |
| Φ480 × 35 | 18.90″ |
| Φ480 × 45 | 18.90″ |
| Φ480 × 50 | 18.90″ |
| Φ480 × 55 | 18.90″ |
| Φ480 × 60 | 18.90″ |
| Φ490 × 40 | 19.29″ |
| Φ490 × 45 | 19.29″ |
| Φ490 × 50 | 19.29″ |
| Φ490 × 55 | 19.29″ |
| Φ490 × 60 | 19.29″ |
| Φ490 × 65 | 19.29″ |
| Φ490 × 70 | 19.29″ |
| Φ500 × 50 | 19.69″ |
| Φ500 × 55 | 19.69″ |
| Φ508 × 30 | 20.00″ |
| Φ508 × 32 | 20.00″ |
| Φ508 × 34 | 20.00″ |
| Φ508 × 35 | 20.00″ |
| Φ508 × 38 | 20.00″ |
| Φ508 × 45 | 20.00″ |
| Φ508 × 50 | 20.00″ |
| Φ508 × 55 | 20.00″ |
| Φ508 × 60 | 20.00″ |
| Φ508 × 65 | 20.00″ |
| Φ508 × 68 | 20.00″ |
| Φ520 × 36 | 20.47″ |
| Φ530 × 27 | 20.87″ |
| Φ530 × 28 | 20.87″ |
| Φ530 × 29 | 20.87″ |
| Φ530 × 40 | 20.87″ |
| Φ530 × 45 | 20.87″ |
| Φ530 × 50 | 20.87″ |
| Φ530 × 55 | 20.87″ |
| Φ530 × 85 | 20.87″ |
| Φ530 × 90 | 20.87″ |
| Φ530 × 95 | 20.87″ |
| Φ530 × 100 | 20.87″ |
| Φ530 × 105 | 20.87″ |
| Φ530 × 110 | 20.87″ |
| Φ530 × 120 | 20.87″ |
| Φ540 × 75 | 21.26″ |
| Φ540 × 85 | 21.26″ |
| Φ550 × 45 | 21.65″ |
| Φ550 × 60 | 21.65″ |
| Φ550 × 80 | 21.65″ |
| Φ550 × 85 | 21.65″ |
| Φ550 × 90 | 21.65″ |
| Φ550 × 95 | 21.65″ |
| Φ550 × 100 | 21.65″ |
| Φ550 × 105 | 21.65″ |
| Φ550 × 110 | 21.65″ |
| Φ550 × 115 | 21.65″ |
| Φ550 × 120 | 21.65″ |
| Φ560 × 30 | 22.05″ |
| Φ560 × 31 | 22.05″ |
| Φ560 × 45 | 22.05″ |
| Φ560 × 48 | 22.05″ |
| Φ560 × 60 | 22.05″ |
| Φ560 × 65 | 22.05″ |
| Φ560 × 120 | 22.05″ |
| Φ560 × 130 | 22.05″ |
| Φ560 × 140 | 22.05″ |
| Φ570 × 60 | 22.44″ |
| Φ570 × 70 | 22.44″ |
| Φ570 × 75 | 22.44″ |
| Φ570 × 80 | 22.44″ |
| Φ570 × 120 | 22.44″ |
| Φ580 × 43 | 22.83″ |
| Φ580 × 50 | 22.83″ |
| Φ580 × 55 | 22.83″ |
| Φ580 × 65 | 22.83″ |
| Φ580 × 75 | 22.83″ |
| Φ580 × 80 | 22.83″ |
| Φ580 × 90 | 22.83″ |
| Φ580 × 130 | 22.83″ |
| Φ585 × 50 | 23.03″ |
| Φ585 × 60 | 23.03″ |
| Φ590 × 60 | 23.23″ |
| Φ590 × 75 | 23.23″ |
| Φ600 × 40 | 23.62″ |
| Φ600 × 45 | 23.62″ |
| Φ600 × 50 | 23.62″ |
| Φ600 × 55 | 23.62″ |
| Φ600 × 60 | 23.62″ |
| Φ600 × 65 | 23.62″ |
| Φ600 × 70 | 23.62″ |
| Φ600 × 75 | 23.62″ |
| Φ600 × 80 | 23.62″ |
| Φ600 × 90 | 23.62″ |
| Φ610 × 38 | 24.02″ |
| Φ610 × 40 | 24.02″ |
| Φ610 × 43 | 24.02″ |
| Φ610 × 48 | 24.02″ |
| Φ610 × 55 | 24.02″ |
| Φ610 × 60 | 24.02″ |
| Φ614 × 50 | 24.17″ |
| Φ614 × 53 | 24.17″ |
| Φ620 × 48 | 24.41″ |
| Φ620 × 50 | 24.41″ |
| Φ620 × 70 | 24.41″ |
| Φ620 × 90 | 24.41″ |
| Φ630 × 40 | 24.80″ |
| Φ630 × 42 | 24.80″ |
| Φ630 × 45 | 24.80″ |
| Φ630 × 50 | 24.80″ |
| Φ630 × 55 | 24.80″ |
| Φ630 × 60 | 24.80″ |
| Φ630 × 65 | 24.80″ |
| Φ635 × 45 | 25.00″ |
45# — 常见问题
- 45# 对应什么国际牌号？
- 45# 最接近 AISI 1045, EN C45 / 1.0503, JIS S45C。这些是采购时通用的对照牌号；随每批货提供的质保书载有该炉号的实际化学成分和力学性能。
- 45# 有哪些规格现货？
- 目前 45# 有 438 个规格组合在库，外径从 Φ95mm 到 Φ635mm，壁厚从 15mm 到 140mm。
- 45# 可以热处理后交货吗？
- 可以。45# 可按以下交货状态供货：热轧态, 正火态, 调质态, 退火态。热处理由我们自有产线在发货前完成，工艺记录与温度曲线随货提供。
- 45# 可以在发货前切割定尺吗？
- 可以。我们按定尺锯切，长度公差常规 ±1–2mm，端面垂直度 ≤1mm/100mm，材料到货即可上机，无需再车端面。