| Aluminum Bronze 642 | ||
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This is a great material that is harder than Aluminum or bronze and machines well. We have used it for a great number of projects. Is an excellent material for valve stems, gears, marine hardware, pole-line hardware, bolts, nuts, valve bodies and components, mechanical parts and for use by model builders. |
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| Specifications: CDA/UNS Copper Alloy No. CDA 64200 | ||
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Composition percentages: |
Nominal Maximum | Tested |
| Copper | 92.10 | 91.10 |
| Aluminum | 7 | 6.80 |
| Silicon | 1.8 | 1.73 |
| Zinc | .50 | .20 |
| Iron | .30 | .07 |
| Nickel | .25 | .01 |
| Tin | .20 | .03 |
| Arsenic | .10 | - |
| Lead | .05 | .02 |
| Tested data per ASTM B150 and Federal QQ-C-465 Condition: Drawn and Stress relieved (HR-50) |
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| Tensile Strength, tested | 104,000 psi | |
| Yield, tested | 64,000 psi | |
| As far as I understand Copper, Aluminum and Silicon and the important elements, the others are considered trace contaminants. Testing shows that this material is better than minimum standards for CDA 64200. | ||
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