表1
化学成分(质量分数)/% | |||||||||||||
Si | Fe | Cu | Mn | Mg | Cr | Ni | Zn | Ti | Zr | 其它 | AL | ||
单个 | 合计 | ||||||||||||
0.5 | 0.5 | 3.8~4.9 | 0.30~0.9 | 1.2~1.8 | 0.10 | - | 0.25 | 0.15 | - | 0.05 | 0.15 | 余量 |
包铝2024 铝板、带材的力学性能如表2所示
表2
供应状态 | 试样状态 | 厚度/mm | 室温拉伸试验结果 | 弯曲半径b | ||||
抗拉强度 Rm/MPa |
规定非比例延伸强度 Rp0.2/MPa |
断后伸长率弯曲半径a/% | ||||||
A50mm | A | 90° | 180° | |||||
不小于 | ||||||||
O | O | >0.20~0.25 | <= 205 | <=95 | 10 | - | - | - |
>0.25~1.60 | <= 205 | <=95 | 12 | - | - | - | ||
>1.60~12.50 | <=220 | <=95 | 12 | - | - | - | ||
>12.50~45.50 | <=220 | - | - | 10 | - | - | ||
T3 | T3 | >0.20~0.25 | 400 | 270 | 10 | - | - | - |
>0.25~0.50 | 405 | 270 | 12 | - | - | - | ||
>0.50~1.60 | 405 | 270 | 15 | - | - | - | ||
>1.60~3.20 | 420 | 275 | 15 | - | - | - | ||
>3.20~6.00 | 420 | 275 | 15 | - | - | - | ||
T4 | T4 | >0.20~0.50 | 400 | 245 | 12 | - | - | - |
>0.50~1.60 | 400 | 245 | 15 | - | - | - | ||
>1.60~3.20 | 420 | 260 | 15 | - | - | - | ||
F | - | >4.50~80.00 | - | - | - |