Ritchey Metals' Products

Zinc Base Die Cast Alloy #5
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Specifications: ASTM B240*
Element Al% Zn% Mg% Si% Cu% Fe% Pb%
Maximum 4.3 BAL 0.06 0.035 1.25 0.075 0.004
Minimum 3.9 0.03 -- 0.75 -- --
Element Sn% Cd% Ni% Mn% Cr% Ti% Sb%
Maximum 0.002 0.003 0.02 0.05 0.02 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

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Ultimate Tensile Strength 48 psi x 103 (328 Mpa)

Yield Strength - 0.2% Offset 33 psi x 103 (228 Mpa)

Elongation 7% in 2"

Shear Strength 38 psi x 103 (262 Mpa)

Hardness: Brinell 91

Impact Strength 48 ft-lb (65 J)
1/4 in2 specimen unnotched

Fatigue Strength Rotary Bend 8.2 psi x 103 (57 Mpa)
5 x 108 cycles

Comprehensive Yield Strength 87 psi x 103 (600 Mpa)
0.1% Offset

Modulus of Elasticity 12.4 psi x 106 (85.5 Mpa x 103)

Physical

Density .24 lb/in3 (6.6 g/cm3)

Melting Range 717-727oF (380-386oC)

Electrical Conductivity 26% IACS

Thermal Conductivity 62.9 BTU/ft/hr/oF
(108.9 W/m/hr/ oC)

Coefficient of Thermal Expansion 15.2 microinches/in/oF
(27.4 microinches/mm/oC)
68-212oF(100-200oC)

Specific Heat 0.10 BTU/lb/oF (419 J/kg/oC))

Pattern or Die Shrinkage 0.007 in/in

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Availability

The following links are technical drawings of our products in pdf format. You will need Adobe Acrobat to view these files.

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

Slightly stronger than Z-3, Zinc Base Die Cast Alloy #5 is ideal for smaller castings which must still deliver higher than average strength. The higher copper content raises the tensile strength and hardness, but cause the impact strength to fall slightly below Z-3.

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