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This C63020, Nickel Aluminum Bronze is a martensitic, heat-treated copper alloy and the strongest in the Nickel Aluminum Bronze family. In some cases, this alloy can be a substitute for Beryllium Copper or other high nickel alloys, due to its exceptional properties. Its’ very high mechanical properties and hardness, with good ductility and toughness, make it ideal for applications involving very heavy loads, extreme abrasive wear, corrosion service, friction, deformation and high temperatures.
| Weight % | Al | Fe | Mn | Ni + Co | Sn | Cu + Ag | Pb | Zn |
|---|---|---|---|---|---|---|---|---|
| Minimum | 10.00 | 4.00 | — | 4.20 | — | 74.5 | — | — |
| Maximum | 11.00 | 5.50 | 1.50 | 6.00 | 0.25 | 91.8 | 0.03 | 0.30 |
| Characteristics | English | Metric | |
|---|---|---|---|
| Nominal density (68°F/20°C) | 0.271 lbs/in3 | 7.5 g/cm3 | |
| Coefficient of thermal
expansion |
Linear
68°F – 392°F 20°C – 200°C |
9.00 micro in/in- °F | 16.0 micro in/in- °K |
| Thermal Conductivity | 68°F / 20°C | 23 BTU/ft- hr – °F | 40 W/m – °K |
| Tensile | Hardness | ||||||
|---|---|---|---|---|---|---|---|
| Form | Section size (inches) | Ultimate | Yield | Elongation at break,
in 2” |
Rockwell C | ||
| KSI | MPa | KSI | MPa | % | |||
| Rod | Up to 1” | 135 | 100 | 6 | 26 | ||
| 1” to 2” | 130 | 95 | 6 | 26 | |||
| 2”-4” | 130 | 90 | 6 | 26 | |||
| over 4” | 130 | 90 | 4 | 26 | |||
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