Zinc Properties
| COMPOSITION | No. 3 | No. 5 | No. 7 | ZA-8 | ZA-12 | ZA-27 |
|---|
| Aluminum |
3.5-4.3 |
3.5-4.3 |
3.5-4.3 |
8.0-8.8 |
10.5-11.5 |
25.0-28.0 |
|---|
| Copper |
0.25 |
0.75-1.25 |
0.25 |
0.8-1.3 |
0.5-1.25 |
2.0-2.5 |
|---|
| Magnesium |
0.02-0.05 |
0.03-0.08 |
0.005-0.020 |
0.015-0.030 |
.015-030 |
.010-.020 |
|---|
| Iron |
0.100 |
0.100 |
0.075 |
0.10 |
0.075 |
0.10 |
|---|
| Lead |
0.005 |
0.005 |
0.0030 |
0.004 |
0.004 |
0.004 |
|---|
| Cadmium |
0.004 |
0.004 |
0.0020 |
0.003 |
0.003 |
0.003 |
|---|
| Tin |
0.003 |
0.003 |
0.0010 |
0.002 |
0.002 |
0.002 |
|---|
| Nickel |
ó |
ó |
0.005-0.020 |
ó |
ó |
ó |
|---|
| Zinc |
Bal. |
Bal. |
Bal. |
Bal. |
Bal. |
Bal. |
|---|
| MECHANICAL PROPERTIES |
|---|
| Ultimate tensile strength (ksi) |
40 |
48 |
41 |
54 |
58.5 |
61 |
|---|
| Tensile yield strength (ksi) |
ó |
ó |
ó |
42 |
46 |
53 |
|---|
| Elongation (% in 2" (55 mm)) |
10 |
7 |
13 |
6-10 |
4-7 |
1-3 |
|---|
| Hardness (HB) |
82 |
91 |
80 |
95-110 |
95-115 |
105-125 |
|---|
| Shear strength (ksi) |
31 |
38 |
ó |
35 |
37 |
42 |
|---|
| Charpy impact strength (ft. lb. unnotched) |
43 |
48 |
43 |
31 |
21 |
3 |
|---|
| Fatigue strength (ksi) (limit @ 500 million cycles) |
6.9 |
8.2 |
ó |
7.5 |
15 |
25 |
|---|
| Density (lb./in.3) |
0.24 |
0.24 |
0.247 |
0.227 |
0.218 |
0.181 |
|---|
| Melting range (°F) |
718-728 |
717-727 |
718-728 |
707-759 |
710-810 |
708-903 |
|---|
| Specific heat (Btu/lb.°F) |
0.10 |
0.10 |
0.10 |
0.104 |
0.107 |
0.125 |
|---|
| Coefficient of thermal expansion (in./in./°F) |
15.2 |
15.2 |
15.2 |
12.9 |
13.4 |
14.4 |
|---|
| Thermal conductivity (Btu/fthr.°F) |
65.3 |
62.9 |
65.3 |
66.3 |
67.1 |
72.5 |
|---|
| Electrical conductivity (% IACS) |
27.0 |
26.0 |
27.0 |
27.7 |
28.3 |
29.7 |
|---|
| Modulus of rupture (106 psi) |
95,000 |
105,000 |
ó |
ó |
ó |
ó |
|---|
| Modulus of elasticity (106 psi) |
ó |
ó |
ó |
10.2 |
10.3 |
10.3 |
|---|
| Die shrinkage (in./in.) |
0.007 |
0.007 |
0.007 |
0.007 |
0.0075 |
0.008 |
|---|
