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40Cr圆钢(40Cr圆棒)
40Cr钢材介绍
40Cr钢材是机械制造业使用钢之一。调质处理后具有良好的综合力学性能,良好的低温冲击韧性和低的缺口敏感性。钢的淬透性良好,水淬时可淬透到Ф28~60mm,油淬时可淬透到Ф15~40mm。这种钢除调质处理外还适于氰化和高频淬火处理。切削性能较好,当硬度为HB174~229时,相对切削加工性为60%。该钢适于制作中型塑料模具。上海亨垒
40Cr钢的化学成分(GB/T3077-1999)ω/%
C |
Si |
Mn |
Cr |
S |
P |
Ni |
Cu |
0.37~0.45 |
0.17~0.37 |
0.50~0.80 |
0.80~1.10 |
≤0.030 |
≤0.030 |
≤0.25 |
≤0.030 |
物理性能
40Cr钢的化学成分示于表4-8-2~4-8-5,其密度为7.82t/m3。
表4-8-2 40Cr钢的临界温度
临界点 |
Ac1 |
Ac3 |
Ms |
备注 |
温度(近似值)/℃ |
780 770 |
840 805 |
350 328 |
1 2 |
1 用钢成分(%):0.38C,0.30Si,0.66Mn,0.95Cr,0.18Ni,0.016P,0.028S;
2 用钢成分(%):0.42C,0.29Si,0.69Mn,0.87Cr,0.14Ni,0.010P,0.013S。
表4-8-3 40Cr钢的弹性模量和切变模量
弹性模量E(20℃) |
/MPa |
200000~211700 |
切变模量G(20℃) |
80800 |
表4-8-4 40Cr钢的线(膨)胀系数
温度/℃ |
20~200 |
20~300 |
20~400 |
20~500 |
20~600 |
20~700 |
备注 |
线(膨)胀系数/C-1 |
(11.9~12.0) ×10-6 |
(13.3~13.4)×10-6 |
(14.3~14.4)×10-6 |
(15.0~15.1)×10-6 |
(15.3~15.4)×10-6 |
(15.4~15.5)×10-6 |
1 2 |
1 用钢成分(%):0.37C,0.30Si,0.66Mn,0.95Cr,0.18Ni,0.016P,0.028S;
2 用钢成分(%):0.42C,0.29Si,0.69Mn,0.87Cr,0.14Ni,0.010P,0.013S。
表4-8-5 40Cr钢的热导率
温度/℃ |
100 |
200 |
300 |
400 |
500 |
600 |
热导率λ/W·(m·K)-1 |
32.6 |
30.9 |
29.3 |
28.0 |
26.7 |
25.5 |
热加工
40Cr钢的热加工工艺示于表4-8-6
表4-8-6 40Cr钢的热加工工艺
加热温度/℃ |
开始温度/℃ |
终止温度/℃ |
冷却方法/℃ |
<1200 |
1100~1150 |
>800 |
大于60mm缓冷 |
40Cr钢材,40Cr模具钢,40Cr结构钢,40Cr圆棒,40Cr圆钢,40Cr材料 40Cr冷拉钢 40Cr光圆 40Cr光亮棒 40Cr磨光棒
材料名称:40Cr合金结构钢,
圆钢/圆棒现货:40Cr直径5mm-300mm 毛圆 长度6米以内,
板材/板料现货:板材厚度1mm-200mm,热处理过的硬料熟料板材均有现货,
厂家/产地名称:宝钢;上海亨垒
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