FAQ

The International Alloy Designation System is widely accepted as a wrought alloy. Each alloy is due to a four-digit number, where the first digit is the primary alloying element.
The 1000 series contains at least 99% by weight of aluminum.
2000 series copper alloy, the strength is comparable to steel. Formerly known as Dura Aluminum, it is a commonly used aerospace alloy, but it is susceptible to intergranular corrosion and is gradually replaced by the 7000 series.
3000 series manganese alloy with work hardening.
4000 series bismuth alloy, also known as bismuth aluminum.
5000 series magnesium alloy, which can solve work hardening and high strength.
6000 series magnesium-niobium alloy, easy to process, can be deposited and hardened, and the strength is comparable to steel.
7000 series zinc alloy, which can be hardened by precipitation and has the highest strength among all aluminum alloys.
8000 series mixing.

Commonly used aluminum alloy composition:

合金編號	Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	其他		Al
6005A	0.50～0.9	0.35以下	0.30以下	0.50以下	0.4～0.7	0.30以下	0.20以下	0.10以下	0.05以下	0.15以下	餘量
6061	0.40～0.8	0.7以下	0.15～0.4	0.15以下	0.8～1.2	0.04～0.35	0.25以下	0.15以下	0.05以下	0.15以下	餘量
6063	0.20～0.6	0.35以下	0.10以下	0.10以下	0.45～0.9	0.10以下	0.10以下	0.10以下	0.05以下	0.15以下	餘量

合金代號	調質	抗拉強度 N/mm²	降伏強度N/mm²	伸張率		勃氏硬度10/500	剪斷強度N/mm²	疲勞強度N/mm²	縱彈性係數kg/mm²
				t1.6mm	d12.7mm
6061	T4	240	145	22	22	65	165	95	7.0
	T6	310	275	12	15	95	205	95	7.0
6063	T5	185	145	12	-	73	150	70	7.0
	T6	240	215	12	-	73	150	70	7.0
6N01	T5	260	225	-	12	88	-	95	7.0
	T6	285	225	-	12	95	-	100	7.0

狀態	順序概要	說明
T5	高溫加工→冷卻→人工時效	熱加工後急冷再施以人工時效處理。人工時效處理的目的在提高材料的機械性質及尺寸的安定性適用於熱加工冷卻便有淬水效果的合金如：6063。
T6	固溶化熱處理→人工時效	溶體化處理後施以人工時效處理。此為熱處理合金代表性的熱處理，無須施以冷加工便能獲得優越的強度。於溶體化處理後為提高尺寸精度或矯正而施以冷加工，如不保證更高的強度時，亦可當作是T6鍊度。

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