high quality carbon structural steel plate-k8凯发官网
high quality carbon structural steel plate
1 main use
the high-quality carbon structural steel plate can be used for quenching and tempering with its excellent carbon steel properties, or it can be directly processed in hot rolling and normalizing state. widely used in machinery, vehicle manufacturing, molds and other industries.
2 grades and standards
grade 45; standard gb/t 699-1999 "quality carbon structural steel" (equivalent to japanese standard jis g4051 grade s45c)
grade 50; standard gb/t 699-1999 "quality carbon structural steel" (equivalent to japanese standard jis g4051 grades s48c, s50c)
grades 10, 20, 35, 45, 50, 65mn, gb/t711-2008 "high-quality carbon structural steel hot-rolled thick steel plate and wide steel strip"
jgx388-2005 "carbon die steel plate technology agreement"
3 technical conditions of supply
3.1 product specifications
6 to 80 × 1500 ~ 4000 × lmm, trimming or burrs.
3.2 delivery status: hot rolled or normalized
3.3 chemical composition: gb/t711-2008 regulations, %
chemical composition
牌号 | c | si | mn | p≤ | s≤ | cr≤ | ni≤ | cu≤ |
10 | 0.07-0.13 | 0.17-0.37 | 0.25-0.65 | 0.035 | 0.035 | 0.15 | 0.30 | 0.25 |
20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.20 | 0.30 | 0.25 |
35 | 0.32-0.39 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.20 | 0.30 | 0.25 |
45 | 0.42～0.50 | 0.17～0.37 | 0.50～0.80 | 0.035 | 0.035 | 0.20 | 0.30 | 0.25 |
50 | 0.47～0.55 | 0.17～0.37 | 0.50～0.80 | 0.035 | 0.035 | 0.20 | 0.30 | 0.25 |
65mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.20 | 0.035 | 0.035 | 0.15 | 0.30 | 0.25 |
牌号 | rm,mpa 不小于 | :a,% 不小于 | 冷弯，180° | 纵向冲击，j | ||
钢板公称厚度a/mm | 20℃ | -20℃ | ||||
≤20 | ＞20 | |||||
弯心直径，d | ||||||
10 | 335 | 32 | 0 | a | ≥34 | ≥27 |
20 | 410 | 28 | a | 2a | ≥34 | ≥27 |
35 | 530 | 20 | 2a | 3a | / | / |
45 | 600 | 17 | / | / | / | / |
50 | 625 | 16 | / | / | / | / |
65mn | 735 | 9 | / | / | / | / |
3.4mechanical properties: gb/t711-2008 regulations, %
mechanical properties
牌号 | rm,mpa 不小于 | :a,% 不小于 | 冷弯，180° | 纵向冲击，j | ||
钢板公称厚度a/mm | 20℃ | -20℃ | ||||
≤20 | ＞20 | |||||
弯心直径，d | ||||||
10 | 335 | 32 | 0 | a | ≥34 | ≥27 |
20 | 410 | 28 | a | 2a | ≥34 | ≥27 |
35 | 530 | 20 | 2a | 3a | / | / |
45 | 600 | 17 | / | / | / | / |
50 | 625 | 16 | / | / | / | / |