Purity Casting Alloys Ltd. produces many stock Zinc Alloys as well as custom Zinc Alloys. Our inhouse labratory allows for real time Alloy assessments to ensure you are receiving the best possible product. Purity has the flexibility to provide quick turn around for short or long run Alloy jobs.
Whether you are sand casting, die casting, pressure casting, let us help you choose the right alloy for the job. We only use silicon graphite crucibles & ladles to ensure high purity levels.
The following is a list of standard alloys that we manufacture. Custom alloys are also available. For more information on specifications & properties of these alloys, please contact us.
Zinc Alloys - Meet all ASTM and ISO specifications. Stock items include:- ZA-3
- ZA-5
- ZA-8
- ZA-12
- ZA-27
| Length | Width | Depth | Zinc | |
| Small | 10" | 3" | 2" | 10 Lbs |
| Medium | 20" | 3" | 2" | 20 Lbs |
| Large | 28" | 6.5" | 3.5" | 80 Lbs |
| ZA-3 | ZA-5 | ZA-8 | ZA-12 | ZA-27 | |
| Aluminum | 3.9 - 4.3 | 3.9 - 4.3 | 8.2 - 8.8 | 105. - 11.5 | 25.0 - 28.0 |
| Copper | 0.03 max | 0.75 - 1.25 | 0.8 - 1.3 | 0.5 - 1.2 | 2.0 - 2.5 |
| Magnesium | 0.04 - 0.06 | 0.03 - 0.08 | 0.02 - 0.03 | 0.015 - 0.03 | 0.01 - 0.02 |
| Iron | 0.075 max | 0.1 max | 0.075 max | 0.075 max | 0.1 max |
| Cadmium | 0.003 max | 0.003 max | 0.005 max | 0.005 max | 0.005 max |
| Zinc | Remainder | Remainder | Remainder | Remainder | Remainder |
| ZA-3 | ZA-12 | |
| Density (lb/in3) | 0.240 | 0.218 |
| Melting Point (degree F) | 728 | 810 |
| Electrical Conductivity (% IACS) | 27 | 28 |
| Coefficient of Thermal Expansion (68F-212F, uin/in/F) | 15.2 | 12.9 |
| ZA-3 | ZA-12 | |
| Tensile Strength (ksi) | 41 | 58 |
| Yield Strength (ksi) | - | 46 |
| Elongation (% in 2") | 10 | 6 |
| Shear Strength (ksi) | 31 | 43 |
| Hardness (Brinell) | 82 | 105 |
For more information or to order please contact us.