Chemical Composition of Beryllium Copper Alloy B14 C17510(% maximum, unless shown as range or minimum) | Copper(1) | Aluminium | Beryllium | Cobalt | Iron | Nickel | Silicon | Min / Max | Remainder | 0.20 | 0.2-0.6 | 0.3 | 0.10 | 1.4-2.2 | 0.20 | Nominal | 97.8 | – | 0.4 | – | – | 1.8 | – |
Note: Copper + Sum of Named Elements, 99.5% min) Applicable SpecificationsProduct | Specification | AMS | ASTM | MILITARY | SAE | Bar | | B441 | | | Bar, Rolled | | B534 | | | Plate | | B534 | | | Rod | | B441 | | J461, J463 | Shapes | | | | J461, J463 | Sheet | | B534 | | | Strip | | B534 | MIL-C-81021 | J461, J463 | Tube | | | | J461, J463 |
Common Fabrication ProcessesBlanking, Drilling, Forming and Bending, Tapping, Turning Fabrication PropertiesJoining Technique | Suitability | Soldering | Good | Brazing | Good | Oxy-Acetylene Welding | Not Recommended | Gas Shielded Arc Welding | Fair | Coated Metal Arc Welding | Fair |
| | Joining Technique | Suitability | Spot Weld | Good | Seam Weld | Fair | Butt Weld | Fair | Capacity for Being Cold Worked | Excellent | Capacity for Being Hot Formed | Good |
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Mechanical PropertiesTypical Room Temperature 20°C Temper | Section Size | Tensile Strength | Yield Strength (0.5% ext under load) | Yield Strength (0.2% offset) | Elongation | Rockwell Hardness | Vickers Hardness | Fatigue Strength @ 108 cycles | | mm | MPa | MPa | MPa | % | B | C | F | 30T | | MPa | Flat Products | TB00 | 0.0 | 310 | 172 | – | 28 | 32 | – | – | 36 | (78) | – | TD02 | 0.0 | 469 | 414 | – | 8 | 70 | – | – | 64 | (126) | – | TD04 | 0.0 | 538 | 483 | – | 5 | 83 | – | – | 72 | (160) | – | TF00 | 0.0 | 758 | 621 | – | 12 | 96 | – | – | 80 | (220) | – | TH02 | 0.0 | 793 | 745 | – | 8 | 98 | – | – | 81 | (234) | 241 | TH04 | 0.0 | 793 | 758 | – | 8 | 98 | – | – | 81 | (234) | – | Forgings | TB00 | 0.0 | 293 | – | 138 | – | 50 | – | – | – | (95) | – | TF00 | 102 | 794 | – | 620 | – | 92 | – | – | – | (198) | – | Rod | TB00 | 0.0 | 310 | 172 | – | 28 | 35 | – | – | – | (80) | – | TD04 | 0.0 | 496 | 448 | – | 12 | 68 | – | – | – | (122) | – | TF00 | 0.0 | 758 | 621 | – | 18 | 96 | – | – | – | (220) | – | TH04 | 0.0 | 793 | 758 | – | 14 | 98 | – | – | – | (234) | – |
Physical PropertiesProperty | Metric Units | Imperial Units | Melting Point (Liquidus) | 1068°C | 1955°F | Melting Point (Solidus) | 1029°C | 1885°F | | | | Density | 8.77 gm/cm³ @ 20°C | 0.317 lb/in³ @ 68°F | Specific Gravity | 8.77 | 8.77 | | | | Coefficient of Thermal Expansion | 17.6 x 10 -6 / °C (20-300°C) | 9.8 x 10 -6 / °F (68-392°F) | Themal Conductivity | 207.7 W/m. °K @ 20°C | 120.0 BTU/ft²/ft/hr/°F @ 68°F | Thermal Capacity (Specific Heat) | 419.0 J/kg. °K @ 293°K | 0.1 BTU/lb/°F @ 68°F | | | | Electrical Resistivity | 3.79 microhm.cm @ 20°C | 22.8 ohms (circ mil/ft) @ 68°F | Electrical Conductivity* | 0.281 MegaSiemens/cm @ 20°C | 48% IACS@ 68°F | Electrical Conductivity | 0.263 MegaSiemens/cm @ 20°C | 45% IACS@ 68°F | | | | Modulus of Elasticity (tension) | 132,400 MPa | 19,200ksi | Modulus of Rigidity (shear) | 51,710 MPa | 7,500 ksi |
Tempers Most Commonly UsedFlat Products | Bar, Drawn | H04, TB00, TF00 | Bar, Rolled | H04, TB00, TF00 | Plate | TB00 | Strip, Rolled | H02, H04, TB00, TF00 |
| | Other Products | Rod | H04, TB00, TF00 | Shapes | H02, TB00 | Tube | TB00, TF00 |
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Typical Uses for Beryllium Copper Alloy B14 C17510Electrical: Instrument parts, connectors, heavy duty, relay parts, conductors, fuse clips, switch parts Fasteners: Fasteners Industrial: Springs, die casting plunger tips, thermal transfer plates, high flux electromagnets, welding equipment |