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This C64200 alloy is non-magnetic, has good fatigue and is galling resistant. It has the highest machinability rating of bronzes and brasses without the addition of lead. C64200’s combination of machinability, strength, hot forgeability, and wear and corrosion resistance make this a superior copper alloy. Typical applications include aircraft bushings, fasteners, marine industry and chemical processing equipment.
| Weight % | Al | Fe | Mn | Si | Sn | Cu + Ag | Ni +Co | Zn |
|---|---|---|---|---|---|---|---|---|
| Minimum | 6.3 | — | — | 1.50 | — | 88.3 | — | — |
| Maximum | 7.6 | 0.30 | 0.10 | 2.20 | 0.20 | 92.2 | 0.30 | 0.50 |
| Characteristics | English | Metric | |
|---|---|---|---|
| Nominal density (68°F/20°C) | 0.274 lbs/in3 | 7.58 g/cm3 | |
| Specific heat (212 °F/100°C) | 0.090 BTU/lb – °F | 377 J/KG- °K | |
| Coefficient of thermal
expansion |
Linear
68°F – 572°F 20°C – 300°C |
10.00 micro in/in- °F | 18.0 micro in/in- °K |
| Thermal Conductivity | 68°F / 20°C | 26.0 BTU/ft- hr – °F | 45.0 W/m – °K |
| Electrical resistivity | 68°F / 20°C | 188 nΩ ∙ m | |
| Tensile | Hardness | Fatigue | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Form | Temper | Section size | Ultimate | Yield | Elongation
in HD, min |
Shear
strength |
Rockwell B | Fatigue strength | ||||
| Inches (mm) | KSI | MPa | KSI | MPa | % | KSI | MPa | KSI | MPa | |||
| Rod | H04 | 1.5 (38.1) | 93 | 641 | 60 | 414 | 26 | — | — | 90 | — | — |
| H04 | 0.75 (19.05) | 102 | 703 | 68 | 469 | 22 | 59 | 407 | 94 | 50 | 345 | |
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