Ritchey Metals' Products
Zinc Base Die Cast Alloy #7
Product Menu | Properties | Availability | Uses
Specifications: ASTM B792*
| Element |
Al% |
Zn% |
Mg% |
Si% |
Cu% |
Fe% |
Pb% |
| Maximum |
4.3 |
BAL |
0.02 |
0.035 |
0.1 |
0.075 |
0.002 |
| Minimum |
3.9 |
0.01 |
-- |
-- |
-- |
-- |
|
| Element |
Sn% |
Cd% |
Ni% |
Mn% |
Cr% |
Ti% |
Sb% |
| Maximum |
0.001 |
0.002 |
0.02 |
0.05 |
0.02 |
X |
X |
| Minimum |
-- |
-- |
0.005 |
-- |
-- |
X= Element not in Specification.
*Ritchey Metals will adjust these specifications to suit the
needs of an individual customer upon request.
| Mechanical |
|
Die Cast |
|

 |
|
| Ultimate Tensile Strength |
41 psi x 103 (283 Mpa) |
|
| Yield Strength - 0.2% Offset |
32 psi x 103 (221 Mpa) |
|
| Elongation |
13% in 2" |
|
| Shear Strength |
31 psi x 103 (214 Mpa) |
|
| Hardness: Brinell |
80 |
|
| Impact Strength |
43 ft-lb (58 J) |
|
1/4 in2 specimen unnotched |
|
| Fatigue Strength Rotary Bend |
6.8 psi x 103 (47 Mpa) |
|
5 x 108 cycles |
|
| Comprehensive Yield Strength |
60 psi x 103 (414 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 |
718-728oF (381-387oC) |
|
| Electrical Conductivity |
27% IACS |
|
| Thermal Conductivity |
65.3 BTU/ft/hr/oF (113.0 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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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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The low impurity levels in Zinc Base Die Cast Alloy #7 leave this alloy less susceptible to weathering. Thus, Z-7 is the best choice for die cast products which will be used in the outdoor elements. The higher ductility of Z-7 also make it well-suited to forming and bending.
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