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Chemical Composition of Aluminum 6061

Element	Composition Range (%)
Aluminum (Al)	Balance
Silicon (Si)	0.40–0.80
Iron (Fe)	≤0.70
Copper (Cu)	0.15–0.40
Manganese (Mn)	≤0.15
Magnesium (Mg)	0.80–1.20
Chromium (Cr)	0.04–0.35
Zinc (Zn)	≤0.25
Titanium (Ti)	≤0.15
Other Elements	Each ≤0.05; Total ≤0.15


Mechanical Properties of Aluminum 6061

Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)	Shear Strength (MPa)	Fatigue Strength (MPa)
O (Annealed)	125	55	25	30	85	60
T4, T451	240	145	22	65	165	95
T6, T651	310	275	12	95	205	95


Notes:

The chemical composition and mechanical properties are based on the standard ASTM B209 and SAE AMS 4027 for wrought aluminum and aluminum alloys111. The mechanical properties vary depending on the heat treatment condition (e.g., O, T4, T6)14. Aluminum 6061 is widely used in aerospace, transportation, and structural applications due to its good weldability, corrosion resistance, and moderate strength