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DFARS Specialty Metals
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Casting Metals
Melt and pour these alloys into molds to create metal parts and prototypes.
Bismuth and indium alloys expand slightly as they solidify, pushing into the crevices of a mold to produce detailed replicas. These alloys are useful for repairing dies, creating fusible links, and holding delicate parts for machining. Indium alloys have a low melting temperature so they can be cast in molds made from glass, quartz, mica, and ceramic.
Indium Alloy
Material Composition | Approximate | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melting Temperature, °F | Bismuth | Lead | Indium | Tin | Cadmium | Thick. | Wd. | Lg. | Dia. | Wt., lbs. | Each | ||
| 117° | 45% | 23% | 19% | 8% | 5% | 1/4" | 2" | 4 1/2" | __ | 1/2 | Sheet and Bar | 0000000 | 0000000 |
| 136° | 49% | 18% | 21% | 12% | __ | 1/4" | 1 7/8" | 4 1/2" | __ | 1/2 | Sheet and Bar | 0000000 | 000000 |
| 140° | 48% | 25% | 5% | 13% | 9% | 1/2" | __ | __ | 3 1/2" | 1 | Rod and Disc | 00000000 | 000000 |
| 147° | 48% | 25% | 4% | 13% | 10% | 1/2" | __ | __ | 3 1/2" | 1 | Rod and Disc | 00000000 | 000000 |