4 板、带材厚度允许偏差
4.1 5A03,5A05,5A06,5083,5086,5A41等含镁量平均值大于或等于3%的铝镁合金普通级板、带材厚度大于等于4.0mm时,允许偏差为其公称厚度的±5%,其他铝及铝合金普通级板、带材厚度允许偏差应符合表2的规定。
表2 mm
|
厚 度 |
规 定 的 宽 度 |
|||||||
|
≤1000 |
>1000~1500 |
>1500~2000 |
>2000~2500 |
|||||
|
厚 度 允 许 偏 差 |
||||||||
|
板 材 |
带 材 |
板 材 |
带 材 |
板 材 |
带 材 |
板 材 |
带 材 |
|
|
>0.20~0.40 |
±0.05 |
±0.05 |
±0.06 |
±0.06 |
— |
— |
— |
— |
|
>0.40~0.63 |
- 0.10 |
±0.05 |
- 0.14 |
±0.08 |
- 0.18 |
±0.09 |
- 0.24 |
±0.12 |
|
>0.63~0.80 |
- 0.12 |
±0.06 |
- 0.14 |
±0.08 |
- 0.18 |
±0.10 |
- 0.26 |
±0.13 |
|
>0.80~1.00 |
- 0.15 |
±0.08 |
- 0.17 |
±0.09 |
- 0.20 |
±0.11 |
- 0.29 |
±0.15 |
|
>1.00~1.20 |
- 0.15 |
±0.08 |
- 0.17 |
±0.10 |
- 0.22 |
±0.12 |
- 0.29 |
±0.15 |
|
>1.20~1.60 |
- 0.20 |
±0.10 |
- 0.25 |
±0.13 |
- 0.27 |
±0.14 |
- 0.29 |
±0.15 |
|
>1.60~2.00 |
- 0.20 |
±0.10 |
- 0.26 |
±0.13 |
- 0.28 |
±0.15 |
- 0.30 |
±0.18 |
|
>2.00~2.50 |
- 0.25 |
±0.13 |
- 0.29 |
±0.15 |
- 0.30 |
±0.16 |
- 0.32 |
±0.18 |
|
>2.50~3.20 |
- 0.30 |
±0.15 |
- 0.34 |
±0.17 |
- 0.35 |
±0.18 |
- 0.36 |
±0.23 |
|
>3.20~4.00 |
- 0.30 |
±0.15 |
- 0.36 |
±0.20 |
- 0.37 |
±0.23 |
- 0.38 |
±0.25 |
|
>4.00~5.00 |
+ 0.10 - 0.35 |
±0.23 |
+ 0.10 - 0.37 |
±0.25 |
+ 0.10 - 0.42 |
±0.28 |
+ 0.10 - 0.45 |
±0.30 |
|
>5.00~6.30 |
+ 0.10 - 0.40 |
±0.25 |
+ 0.10 - 0.42 |
±0.28 |
+ 0.10 - 0.42 |
±0.33 |
+ 0.10 - 0.45 |
±0.38 |
|
>6.30~8.00 |
+ 0.10 - 0.45 |
±0.30 |
+ 0.10 - 0.47 |
±0.36 |
+ 0.10 - 0.50 |
±0.38 |
+ 0.10 - 0.60 |
±0.46 |
|
>8.00~10.00 |
+ 0.10 - 0.50 |
±0.38 |
+ 0.10 - 0.50 |
±0.43 |
+ 0.10 - 0.50 |
±0.51 |
+ 0.10 - 0.60 |
±0.58 |
|
>10.00~16.00 |
±0.50 |
±0.50 |
±1.0 |
±1.5 |
||||
|
>16.00~25.00 |
±0.75 |
±0.75 |
±1.5 |
±2.0 |
||||
|
>25.00~40.-0 |
±1.0 |
±1.0 |
±1.5 |
±2.0 |
||||
|
>40.00~60.00 |
±1.5 |
±1.5 |
±2.0 |
±3.0 |
||||
|
>60.00~80.00 |
±3.0 |
±3.0 |
±3.5 |
±4.0 |
||||
|
>80.00~100.00 |
±3.5 |
±3.5 |
±5.0 |
±5.5 |
||||
|
>100.00~160.00 |
— |
±4.0 |
±5.5 |
±6.0 |
||||
|
注:非对称偏差的板材,需要对称偏差时,可双方协商采用相应带材的偏差。 |
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4.2 2014,2024,2017,2A14,2A12,2A11,7075,7A04,7A09等航空工业用铝合金高精级板、带材的厚度允许偏差应符合表3的规定。其他非航空用高精级板、带材厚度允许偏差应符合表4的规定。
表3 mm
|
厚 度 |
规 定 的 宽 度 |
|||||||||
|
≤1000 |
>1000 ~1200 |
>1200 ~1400 |
>1400 ~1500 |
>1500 ~1800 |
>1800 ~2000 |
>2000 ~2200 |
>2200 ~2500 |
|||
|
厚 度 允 许 偏 差 |
||||||||||
|
>0.20~0.63 |
±0.040 |
— |
— |
— |
— |
— |
— |
— |
||
|
>0.63~0.80 |
±0.040 |
±0.040 |
±0.06 |
±0.06 |
±0.08 |
— |
— |
— |
||
|
>0.80~1.00 |
±0.040 |
±0.040 |
±0.06 |
±0.08 |
±0.08 |
±0.09 |
±0.10 |
— |
||
|
>1.00~1.20 |
±0.050 |
±0.050 |
±0.06 |
±0.08 |
±0.08 |
±0.10 |
±0.10 |
— |
||
|
>1.20~1.60 |
±0.050 |
±0.050 |
±0.08 |
±0.08 |
±0.08 |
±0.10 |
±0.10 |
— |
||
|
>1.60~2.00 |
±0.050 |
±0.050 |
±0.08 |
±0.09 |
±0.09 |
±0.10 |
±0.10 |
— |
||
|
>2.00~2.50 |
±0.065 |
±0.065 |
±0.09 |
±0.11 |
±0.11 |
±0.12 |
±0.12 |
— |
||
|
>2.50~3.20 |
±0.09 |
±0.09 |
±0.10 |
±0.12 |
±0.12 |
±0.12 |
±0.12 |
— |
||
|
>3.20~4.00 |
±0.11 |
±0.11 |
±0.12 |
±0.17 |
±0.18 |
— |
— |
— |
||
|
>4.00~5.00 |
±0.15 |
±0.18 |
±0.18 |
±0.23 |
±0.23 |
— |
— |
— |
||
|
>5.00~6.30 |
±0.24 |
— |
— |
— |
— |
— |
— |
— |
||
|
>6.30~10.00 |
— |
— |
— |
— |
— |
— |
— |
— |
||
|
>10.00~16.00 |
— |
— |
— |
— |
±0.72 |
±0.72 |
±0.86 |
±0.86 |
||
|
>16.00~25.00 |
— |
— |
— |
— |
±0.94 |
±0.94 |
±1.10 |
±1.10 |
||
|
>25.00~40.00 |
— |
— |
— |
— |
±1.20 |
±1.20 |
±1.40 |
±1.40 |
||
|
>40.00~60.00 |
±0.24 |
±1.40 |
±1.40 |
±1.40 |
±1.60 |
±1.60 |
±1.90 |
±1.90 |
||
|
>60.00~80.00 |
±0.24 |
±2.00 |
±2.00 |
±2.00 |
±2.10 |
±2.10 |
±2.80 |
±2.80 |
||
|
>80.00~100.00 |
±0.24 |
±2.60 |
±2.60 |
±2.60 |
±2.95 |
±2.95 |
±3.40 |
±3.40 |
||
|
>100.00~160.00 |
— |
±3.40 |
±3.40 |
±3.40 |
±3.80 |
±3.80 |
±4.30 |
±4.30 |
||
|
注 1 厚度允许偏差仅为“+”或“-”时,其值为上表数值的二倍。 2 表中未规定部分的偏差按表2普通级的相应规定。 |
||||||||||
表4 mm
|
厚 度 |
规 定 的 宽 度 |
|||
|
≤1000 |
>1000~1200 |
>1200~1400 |
>1400~1500 |
|
|
厚 度 允 许 偏 差 |
||||
|
>0.20~0.40 |
±0.025 |
±0.040 |
— |
— |
|
>0.40~0.63 |
±0.040 |
±0.050 |
±0.05 |
±0.09 |
|
>0.63~0.80 |
±0.045 |
±0.060 |
±0.08 |
±0.10 |
|
>0.80~1.00 |
±0.050 |
±0.08 |
±0.09 |
±0.11 |
|
>1.00~1.20 |
±0.06 |
±0.08 |
±0.10 |
±0.14 |
|
>1.20~1.60 |
±0.08 |
±0.09 |
±0.13 |
— |
|
>1.60~2.00 |
±0.08 |
±0.10 |
— |
— |
|
>2.00~2.50 |
±0.08 |
±0.10 |
— |
— |
续表4(完) mm
|
厚 度 |
规 定 的 宽 度 |
|||
|
≤1000 |
>1000~1500 |
>1500~2000 |
>2000~2500 |
|
|
厚 度 允 许 偏 差 |
||||
|
>2.50~3.20 |
±0.10 |
±0.13 |
— |
— |
|
>3.20~4.00 |
±0.14 |
±0.17 |
— |
— |
|
>4.00~5.00 |
±0.18 |
±0.23 |
— |
— |
|
>5.00~6.30 |
±0.23 |
— |
— |
— |
|
>6.30~10.00 |
— |
— |
— |
— |
|
>10.00~16.00 |
— |
— |
±0.69 |
±0.81 |
|
>16.00~25.00 |
— |
— |
±0.94 |
±1.10 |
|
>25.00~40.00 |
— |
— |
±1.20 |
±1.40 |
|
>40.00~60.00 |
±1.40 |
±1.40 |
±1.55 |
±1.80 |
|
>60.00~80.00 |
±1.90 |
±1.90 |
±2.15 |
±2.55 |
|
>80.00~100.00 |
±2.55 |
±2.55 |
±2.90 |
±3.20 |
|
>100.00~160.00 |
— |
±3.30 |
±3.70 |
±4.20 |
|
注:1 厚度允许偏差仅为“+”或“-”时,其值为上表数值的二倍。 2 表中未规定部分的偏差按表2普通级的相应规定。 |
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5 板材长度允许偏差
5.1 厚度大于40mm的普通级板材,在用整个铸块轧制后,不切头尾,整块交货。
5.2 变断面板材的公称长度以薄端、厚端的公称厚度和平均楔形度计算。
5.3 普通级板材长度偏差应符合表5的规定。




