Specifications: ASTM B669*

Element	Al%	Zn%	Mg%	Si%	Cu%	Fe%	Pb%
Maximum	28.0	BAL	0.02	X	2.5	0.072	0.005
Minimum	25.5		0.012		2.0	--	--
Element	Sn%	Cd%	Ni%	Mn%	Cr%	Ti%	Sb%
Maximum	0.002	0.005	0.01	0.01	0.01	X	X
Minimum	--	--	--	--	--

X= Element not in Specification.
*Ritchey Metals will adjust these specifications to suit the
needs of an individual customer upon request.

Properties

Mechanical			Sand Cast		Die Cast
Ultimate Tensile Strength		58-64 psi x 103 (400-441 Mpa)	61 psi x 103 (421 Mpa)
Yield Strength - 0.2% Offset		54 psi x 103 (372 Mpa)	55 psi x 103 (379 Mpa)
Elongation		3-6% in 2"	1-3% in 2"
Shear Strength		42 psi x 103 (290 Mpa)	47 psi x 103 (325 Mpa)
Hardness: Brinell		110-120	105-125
Impact Strength		35 ft-lb (47 J)	43 ft-lb (58 J)
	(10 mm2 specimen unnotched)
Fatigue Strength Rotary Bend		25 psi x 103 (172 Mpa)	21 psi x 103 (145 Mpa)
	5 x 108 cycles
Comprehensive Yield Strength		48 psi x 103 (331 Mpa)	52 psi x 103 (385 Mpa)
	0.1% Offset
Modulus of Elasticity		11.3 psi x 106 (77.9 Mpa x 103)
Physical
Density		0.181 lb/in3 (5.0 g/cm3)
Melting Range		708-903 oF (376-484 oC)
Electrical Conductivity		29.7% IACS
Thermal Conductivity		72.5 BTU/ft/hr/oF (125.5 W/m/hr/oC)
Coefficient of Thermal Expansion		14.4 microinches/in/oF (26.0 microinches/mm/oC)
	68-212oF(100-200oC)
Specific Heat		0.125 BTU/lb/oF (534 J/kg/oC)
Pattern or Die Shrinkage		5/32 in/ft	0.008 in/in

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Availability

Bar Ingot Bundle - Self-palletizing or on wooden pallets
Margash Bundle - Self-palletizing or on wooden pallets
Small Sow

Ritchey Metals routinely works with customers to alter our products to fit specific needs.

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Uses

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