COMPOSITION AND PROPERTIES
|
DESIGNATION ASTM COMPOSITION — percent unless shown as range |
STANDARD ALLOY AZ91B |
HIGH PURITY ALLOY AZ91HP |
| Aluminum |
8.3 to 9.7 |
85. to 9.5 |
| Zinc |
0.35 to 1.0 |
0.45 to 0.9 |
| Manganese, min. |
0.13 |
0.15 |
| Silicon, max |
0.5 |
0.20 |
| Copper, max. |
0.30 |
0.015 |
| Iron — |
0.005 |
|
| Nickel, max |
0.03 |
0.001 |
| Others, total, max. |
0.3 |
0.01 |
| Magnesium |
Bal. |
Bal. |
| PROPERTIES AND CONSTANTS | ||
| Tensile Strength, (ksi) |
34 |
34 |
| Tensile Yield Strength (0.2% offset) (ksi) |
23 |
23 |
| Elongation, (% in 2" G.L.) |
3 |
3 |
| Shear Strength, (ksi) |
20 |
20 |
| Compressive Yield Strength, (ksi) |
22 |
22 |
| Ultimate Compressive Strength, (ksi) |
58 |
58 |
| Fatigue Strength, (ksi) (limit @ 500 million cycles) |
14 |
14 |
| Specific Gravity |
1.80 |
1.80 |
| Density (lb./in.3) |
0.066 |
0.066 |
| Melting range |
875-1105oF |
875-1105oF |
| Thermal Conductivity, CGS |
0.17 |
0.17 |
| Thermal Expansion, in./in./oF (x10-6) |
15.2 |
15.2 |
| Electrical Conductivity, (% I.A.C.S.) |
10 |
10 |