Metals & alloys · Aluminium alloys

A356-T6 aluminium casting alloy

A widely used Al–Si–Mg casting alloy balancing castability, pressure tightness, corrosion resistance and precipitation-hardening response.

Browse this family

Overview

Constituent	Min	Max	Typical
Si	6.5	7.5	7
Mg	0.25	0.45	0.35
Fe		0.2	0.1
Ti		0.2	0.1
Al			Balance

Property	Value	Unit	Condition
Density	2.68	g/cm³	Representative; verify product form and condition
Elastic modulus	72	GPa	Representative; verify product form and condition
Yield strength	~165–230	MPa	T6 casting/process dependent
Tensile strength	~230–310	MPa	Representative; verify product form and condition
Elongation	3–10	%	Representative; verify product form and condition
Castability	high		process dependent

casting

As-cast foundry condition; process and porosity state required.

heat treatment

Solution-treated and artificially aged casting condition.

Product form, thermal history and manufacturing route materially affect performance.

Use the current governing standard and supplier certification for design or procurement.

Confirm the applicable specification, product form and condition before using values for design or procurement.

Availability and lead time depend on grade, product form, certification and regional supply chain.

Segregated recovery and closed-loop recycling improve material efficiency where practical.