上海景渤实业有限公司专业各种钢材现货销售、5S售后服务平台，日标角钢，日标槽钢，日标工字钢，欧标H型钢，欧标工字钢，欧标槽钢，欧标角钢，英标槽钢，英标H型钢，英标工字钢，英标角钢，美标H型钢，美标工字钢，美标槽钢，美标角钢，电梯轨道钢，船用L型钢，船用球扁钢，低合金工角槽等材料，欢迎来电订购：021-61316035   叶龙

型钢的牌号和化学成分 

牌号化学成分（质量分数）（%）

CSiMnVPS

≤

16MnK0.12"-' 0.200.20"-'0.551.20"-'1.60 0.0450.045

20MnK0.15"-' 0.260.20"-'0.601.20"-'1.60 0.0500.050

25MnK0.21"-' 0.310.20"-'0.601.20"-'1.60 0.0500.050

20MnVK0.17"-' 0.240.17"-'0.371.20"-'1.600.07"-'0.200.0450.045

25MnVK0.22"-' 0.300.50"-'0.901.30"-'1.600.06"-'0.130.0500.050

 型钢的力学和工艺性能

牌号屈服点 s/MPa抗拉强度 h/MPa伸长率 (%)冷弯180° d=弯心直径 a=试样厚度

≥

16MnK32549021d=3a

20MnK33549016

25MnK33552016

20MnVK39057014

25NnVK49063518