螺柱用钢材化学成分
2008-07-01 19:11:06 阅读103 评论0 字号：大中小
螺柱用钢材化学成分和机械性能
（一）Q235-Axx钢
（二）35钢
(三)螺柱用合金结构钢
|
表14～15 螺柱用合金结构钢的化学成分 | |||||||||||
|
钢号 |
化学成分(%) | ||||||||||
|
C |
Si |
Mn |
P |
S |
Mo |
Cr |
Ni |
V |
B |
Cu | |
|
40MnB |
0.37～0.44 |
0.17～0.37 |
1.10～1.40 |
≤0.035 |
≤0.035 |
-- |
≤0.30 |
≤0.30 |
-- |
0.0005～0.0035 |
≤0.30 |
|
40MnVB |
0.37～0.44 |
0.17～0.37 |
1.10～1.40 |
≤0.035 |
≤0.035 |
-- |
≤0.30 |
≤0.30 |
0.05～0.10 |
0.0005～0.0035 |
≤0.30 |
|
40Cr |
0.37～0.44 |
0.17～0.37 |
0.50～0.80 |
≤0.035 |
≤0.035 |
-- |
0.80～1.10 |
≤0.30 |
-- |
-- |
≤0.30 |
|
30CrMoA |
0.26～0.33 |
0.17～0.37 |
0.40～0.70 |
≤0.025 |
≤0.025 |
0.15～0.25 |
0.80～1.10 |
≤0.30 |
-- |
-- |
≤0.25 |
|
35CrMoA |
0.32～0.40 |
0.17～0.37 |
0.40～0.70 |
≤0.025 |
≤0.025 |
0.15～0.25 |
0.80～1.10 |
≤0.30 |
-- |
-- |
≤0.25 |
|
35CrMoVA |
0.30～0.38 |
0.17～0.37 |
0.40～0.70 |
≤0.025 |
≤0.025 |
0.20～0.30 |
1.00～1.30 |
≤0.30 |
0.10～0.20 |
-- |
≤0.25 |
|
25Cr2MoVA |
0.22～0.29 |
0.17～0.37 |
0.40～0.70 |
≤0.025 |
≤0.025 |
0.25～0.35 |
1.50～1.80 |
≤0.30 |
0.15～0.30 |
-- |
≤0.25 |
|
40CrNiMoA |
0.37～0.44 |
0.17～0.37 |
0.50～0.80 |
≤0.025 |
≤0.025 |
0.15～0.25 |
0.60～0.90 |
1.25～1.65 |
-- |
-- |
≤0.25 |
|
表14～16 螺柱用合金结构钢的常温力学性能 | ||||||||
|
钢号 |
直径(mm) |
热处理状态 |
бb(Mpa) |
бs(Mpa) |
δ5(%) |
ф（%） |
Aku(J) |
HB（退火或高温回火状态 |
|
40MnB |
25 |
调质 |
≥1030 |
≥835 |
≥9 |
≥40 |
≥39 |
≥217 |
|
40MnVB |
25 |
调质 |
≥980 |
≥785 |
≥10 |
≥45 |
≥47 |
≥207 |
|
40Cr |
25 |
调质 |
≥980 |
≥785 |
≥9 |
≥45 |
≥47 |
≥207 |
|
30CrMoA |
15 |
调质 |
≥930 |
≥745 |
≥12 |
≥50 |
≥71 |
≥229 |
|
35CrMoA |
25 |
调质 |
≥980 |
≥835 |
≥12 |
≥45 |
≥63 |
≥229 |
|
35CrMoVA |
25 |
调质 |
≥1080 |
≥930 |
≥10 |
≥50 |
≥71 |
≥241 |
|
25Cr2MoVA |
25 |
调质 |
≥930 |
≥785 |
≥14 |
≥50 |
≥63 |
≥241 |
|
40CrNiMoA |
25 |
调质 |
≥980 |
≥835 |
≥12 |
≥55 |
≥78 |
≥269 |
