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アルミシートゲージチャート: 厚さ, 重量と使用例
アルミシートゲージチャート: 厚さ, 重量と使用例
Aluminum sheet is sold by gauge in some markets and by millimeters in others. The conversion is not linear, and the same gauge number means different thickness for aluminum versus steel. This guide gives you the common gauge-to-mm chart, the weight per square meter, and the typical use for each thickness.
Common Thickness Chart
| Gauge | 厚さ (んん) | 重さ 6061 (kg/平方メートル) | 一般的な使用方法 |
|---|---|---|---|
| 30 ga | 0.25 | 0.68 | Foil, flashing |
| 20 ga | 0.81 | 2.19 | パネル, 側溝 |
| 16 ga | 1.51 | 4.08 | 屋根材, siding |
| 1/8″ | 3.18 | 8.59 | General sheet |
| 1/4″ | 6.35 | 17.1 | Machining plate |
| 1/2″ | 12.7 | 34.3 | Tooling plate |
| 1″ | 25.4 | 68.6 | Thick tooling |
Gauge vs Millimeter: Why It Matters
Aluminum gauge follows the Aluminum Association standard, which differs from steel gauge. A 16-gauge aluminum sheet is 1.51 んん, while 16-gauge steel is 1.59 mm — close, but not identical. When quoting, always specify millimeters rather than gauge, because gauge numbers vary by standard (US Sheet, Brown & Sharpe, and others). If a supplier quotes “14 gauge aluminum,” ask for the actual mm before ordering, because the tolerance can be ±0.05 mm. 私たちのを参照してください 1060 アルミ板 と 5052 シート.
Weight Estimation
重さ (kg/平方メートル) = thickness (んん) × density (g/cm3). のために 6061 (2.70 g/cm3), ある 3 mm sheet weighs 8.1 kg/平方メートル. のために 5052 (2.68), it is 8.04 kg/平方メートル. のために 1060 純アルミニウム (2.71), it is 8.13 kg/平方メートル. The differences are small, but for large orders over tonnes, they add up. Always confirm whether the price is per net weight or per piece, and whether the mill certificate measures actual thickness or nominal.
