This is an alloy researched and developed by General Motors.
- It has greatly improved strength, hardness, and creep performance due to its high copper and low aluminum contents
- ACuZinc5, or zinc copper aluminum alloy, also has excellent bearing properties like lubricity.
Mechanical Properties
| Material |
Alloy |
Elongation
|
Tensile Strength
|
Yield Strength (0.2%)
|
Impact Strength
|
Shear Strength
|
Hardness
|
Process |
|
|
|
% in 50mm
% in 50mm
|
MPa
PSI x 103
|
MPa
PSI x 103
|
J
ft lb
|
MPa
PSI x 103
|
Brinell (HB)
Brinell (HB)
|
|
|
Zinc Casting Metals |
|
5
5
|
407
59
|
338
49
|
-
-
|
-
-
|
115
115
|
|
Physical Properties
| Material |
Alloy |
Density
|
Melting Point (Average +/- 50)
|
Thermal Conductivity
|
Coefficient of Thermal Expansion
|
Electrical Conductivity
|
Process |
|
|
|
g/cm3
lb/in3
|
°C
°F
|
W / m K
BTU/h∙ft∙°F
|
µm/m°K
µin/in°F
|
% IACS
%IACS
|
|
|
Zinc Casting Metals
|
|
6.85
0.247
|
452
846
|
106
61.2
|
24.1
13.3
|
26.9
26.9
|
|
Composition
|
Zinc Casting Metals |
| % |
ACuZinc5
|
| Aluminum |
2.8-3.3
|
| Copper |
5.0-6.0
|
| Magnesium |
0.025-0.05
|
| Iron (max) |
0.075
|
| Lead (max) |
0.005
|
| Cadmium (max) |
0.004
|
| Tin (max) |
0.003
|
| Nickel (max) |
|
| Zinc |
Bal.
|
| Manganese |
|
| Silicon |
|
| Other-Metallic |
|
| RoHS Compliant |
✓ |
