2024铝板主要化学成份指标如表1
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 |
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 | >0.40~1.50 | <= 220 | <=140 | 12 | - | 0t | - |
>1.50~3.00 | 13 | - | 1.0t | - | ||||
>3.00~6.00 | - | 1.5t | - | |||||
>6.00~9.00 | - | 2.5t | - | |||||
>9.00~12.50 | - | 4.0t | - | |||||
>12.50~25.00 | - | - | 11 | - | - | |||
T3 | T3 | >0.40~1.50 | 435 | 290 | 12 | 11 | - | - |
>1.50~3.00 | 435 | 290 | 14 | - | - | - | ||
>3.00~6.00 | 440 | 290 | 14 | - | - | - | ||
>6.00~12.50 | 440 | 290 | 13 | - | - | - | ||
>12.50~40.00 | 430 | 290 | - | 11 | - | - | ||
>40.00~80.00 | 420 | 290 | - | 8 | - | - | ||
>80.00~100.00 | 400 | 285 | - | 7 | - | - | ||
>100.00~120.00 | 380 | 270 | - | 5 | - | - | ||
>120.00~150.00 | 360 | 250 | - | 5 | - | - | ||
T4 | T4 | >0.40~1.50 | 425 | 275 | 12 | - | - | 4.0t |
>1.50~6.00 | 425 | 275 | 14 | - | - | 5.0t | ||
T8 | T8 | >0.40~1.50 | 460 | 400 | 5 | - | - | - |
>1.50~6.00 | 460 | 400 | 6 | - | - | - | ||
>6.00~12.50 | 460 | 400 | 5 | - | - | - | ||
>12.50~25.00 | 455 | 400 | - | 4 | - | - | ||
>25.00~40.00 | 455 | 395 | - | 4 | - | - | ||
F | - | >4.50~80.00 | - | - | - |