About C17300 Leaded Beryllium Copper
Cube2Pb--C17300 (CDA 173) Leaded Beryllium Copper is identical to the leaded alloy C17200 and has the same excellent strength after hardening. C17300 bars contain a small amount of lead to provide an alloy suitable for automatic machining operations, where the lead promotes the formation of fine chips, which prolongs the life of cutting tools.
Typical Uses
Electrical: Contact bridges, electrical switch and relay blades, motor components, navigation instruments, clips, electrical connectors, connectors, relay parts, switch parts, fuse clips
Fasteners: Washers, Screws, Bolts, Retaining Rings, Roll Pins, Lock Washers, Fasteners
Industrial: Splined Shafts, Pump Parts, Valves, Non-Sparking Safety Tools, Flexible Metal Hose, Bushings, Mill Parts, Electrochemical Springs, Pumps, Shafts, Springs, Bellows, Welding Equipment, Diaphragms, Bourdon Tubes
Chemical Composition
| Element | ||||||
|---|---|---|---|---|---|---|
| Â | Cu(1,2) | Pb | Al | Be | Co(3) | Si |
| (1) Cu + Sum of Named Elements 99.5% min.(2) Cu value includes Ag.(3) Ni + Co 0.20% min.: Ni + Fe + Co 0.6% max. | ||||||
| Min (%) | Â | 0.20 | Â | 1.80 | 0.20 | Â |
| Max (%) | Rem | 0.6 | 0.20 | 2.00 | Â | 0.20 |
Mechanical Properties*
Physical Properties
| (1) In the precipitation hardened condition. | |
| Melting Point - Liquidus°F | 1800 |
|---|---|
| Melting Point - Solidus°F | 1590 |
| Density lb/cu in. at 68°F | 0.298 |
| Specific Gravity | 8.26 |
| Electrical Conductivity% IACS at 68°F | 22(1) |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 62 |
| Coefficient of Thermal Expansion 68-57210â»â¶ per °F (68 – 572°F) | 9.9 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.1 |
| Modulus of Elasticity in Tensionksi | 18500 |
| Modulus of Rigidityksi | 7300 |
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Applicable Specifications
| Rod | ASTM B 196 / B 196 M, MILITARY MIL-C-21657 | NF A 51-114 |
| Wire | ASTM B 197 / B 197 M | NF A 51-114 |
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