A360 Aluminum Casting Alloy

AA A360.0 / die casting. A360 is an Al-Si-Mg die-casting alloy with added magnesium and low copper, giving better corrosion resistance and ductility than A380 — favored for marine and corrosion-exposed parts.

Chemical composition (nominal wt %)

Element	%
Silicon (Si)	9.0–10.0
Magnesium (Mg)	0.40–0.60
Copper (Cu)	≤0.60
Iron (Fe)	≤1.3

Mechanical properties

Property	Value
Tensile strength	317 MPa (46 ksi)
Yield strength	165 MPa (24 ksi)
Elongation	3.5%
Hardness	~75 HB

Density: 2.68 g/cm³ · Heat treatment: Not heat-treatable; used as-cast (F) for die casting.

Cross-standard equivalents

Standard	Equivalent grade
JIS	ADC3
EN AC	EN AC-43400 (AlSi10Mg)
GB	YL104

Equivalents by nominal class — confirm exact chemistry & spec for critical parts.

Typical applications

Marine & corrosion-exposed housings
Pump and valve components
Outdoor electronics enclosures
Brackets needing ductility

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FAQ

What is the difference between A380 and A360?

A360 has added magnesium and little/no copper, giving better corrosion resistance and ductility; A380 has ~3.5% copper for higher strength and machinability but lower corrosion resistance. Use A360 for marine/corrosion service.