Jul 10 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications
Introduction
Grade Zamak 3 alloy is the most widely used zinc alloy in the zinc die casting industry. It has excellent physical and mechanical properties, good castability and long term dimensional stability. It also offers excellent finishing characteristics for chromate treatments, painting and plating.
The following section will provide an overview of grade zamak 3 alloy.
Chemical Composition
The chemical composition of grade zamak 3 alloy is outlined in the following table.
|
Element |
Content (%) |
|
Aluminum, Al |
3.8-4.2 |
|
Copper, Cu |
2.7-3.3 |
|
Magnesium, Mg |
0.035-0.06 |
|
Iron, Fe |
0.02 |
|
Silicon, Si |
0.02 |
|
Lead, Pb |
0.003 |
|
Cadmium, Cd |
0.003 |
|
Tin, Sn |
0.001 |
|
Nickel, Ni |
0.001 |
Physical Properties
The following table shows the physical properties of grade zamak 3 alloy.
|
Properties |
Metric |
Imperial |
|
Density |
6.6 g/cm3 |
0.24 lb/in3 |
|
Melting point |
381-387°C |
718-728°F |
Mechanical Properties
The mechanical properties of grade zamak 3 alloy are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
268 MPa |
38900 psi |
|
Yield strength |
208 MPa |
30200 psi |
|
Modulus of elasticity |
96 GPa |
14000000 psi |
|
Poisson’s ratio |
0.27 |
0.27 |
|
Elongation at break |
10% |
10% |
|
Brinell hardness |
82 |
82 |
Thermal Properties
The thermal properties of grade zamak 3 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@100-200°C/68-212°F) |
27.4 µm/m°C |
15.2 µin/in°F |
|
Thermal conductivity |
113 W/mK |
65.3 BTU.in/hrft².°F |
Applications
The following are the list of applications of grade zamak 3 alloy:
-
Plumbing fittings
-
Zippers
-
Automotive parts
-
Ceiling fans
-
Blenders