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 | – |
(1) Copper value includes Silver
Note: Copper + Sum of Named Elements, 99.5% min)
Applicable Specifications
| Product | 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 Processes
Blanking, Drilling, Forming and Bending, Tapping, Turning
Fabrication Properties
| Joining 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 |
Mechanical Properties
Typical 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 Properties
| Property | 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 |
* Cold Worked and Precipitation Hardened Condition
Tempers Most Commonly Used
| Flat Products Bar, Drawn H04, TB00, TF00 Bar, Rolled H04, TB00, TF00 Plate TB00 Strip, Rolled H02, H04, TB00, TF00 | Other Products Rod H0 4, TB00, TF00 Shapes H02, TB00 Tube TB00, TF00 |
Typical Uses for Beryllium Copper Alloy B14 C17510
Electrical: 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