Aluminum Investment Cast Alloy Chemical Composition

	Copper Min-Max %	Magnesium Min-Max %	Silicon Min-Max %	Ti Max %	Manganese Min-Max %	Zinc Min-Max %	Fe Max %	Trace Max %
Aluminum Alloy Chemistry
Alloy Type								Ea.	Tot.
356	0.25	0.20-0.40	6.5-7.5	0.25	0.35	0.35	0.6	0.05	0.15
A356	0.2	0.20-0.40	6.5-7.5	0.25	0.1	0.1	0.2	0.05	0.15

Aluminum Investment Cast Alloy Properties

	Tensile Strength		Yield Strength 0.2% Offset		Elongation %
Aluminum Alloy Properties
	English PSI	Metric MPa	English PSI	Metric MPa	Range (in 2.5 cm or 1")
A356	38,000-48,000	262-331	28,000-36,000	193-248	3 to 10
356	32,000-40,000	221-276	22,000-30,000	152-207	3 to 7

Mechanical Property values are for information only. They are determined from test bars and do not necessarily apply to castings. Any requirements for mechanical properties that are beyond the above information must be discussed with and agreed to by WPCC. Aluminum Investment Castings will have 70 to 80% the yield strength of an aluminum die casting and the ultimate tensile strength will be typically be in the range of 70% to 100%. (Information provided through the Investment Casting Division of AFS Inc. and Mike Werner's article in Rapid Prototyping).