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CuAl7Si2
ASTM B 150-12 HR50, ASTM B 124-14a, SAE AMS 4634B, QQC-465B AM1
- Automotive
- Electrical
- Fasteners
- Marine
Typical Uses
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 Round : | 1/2" - 4" |
 Bar Length : | 10ft - 12ft |
 Hexagonal : | 1/2" - 2" |
 Square : | 1/2" - 3" |
 Rectangle : | up to 4" |
Product availabillity
C-64200
Chemical Composition
(%max, unless shown as range or min)
Cu* | Al | Fe | Mn | Ni** | Si | Sn | Zn | Pb | |
Min/Max | Rem | 6.3-7.6 | 0.030 | 0.10 | 0.25 | 1.5-2.2 | 0.20 | 0.50 | 0.05 |
* Cu value includes Ag.
** Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.5% min.
Applicable Specifications
* Bar, Rod – ASTM B150
* AMS 4640
* SAE J461
* SAE J463
Fabrication Processes
* Forging
* Hot Forming
Standard Temper Designation:
* Bar, Rod – HR50 – Drawn and Stress Relieved
* Shapes – M30 – As Hot Extruded; O30 – Hot Extruded and Annealed
Fabrication Properties
| Joining Technique | Suitability |
| Soldering | Not Recommended |
| Brazing | Fair |
| Oxyacetylene Welding | Not Recommended |
| Gas Shielded Arc Welding | Good |
| Coated Metal Arc Welding | Good |
| Spot Weld | Good |
| Seam Weld | Good |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Poor |
| Capacity for Being Hot Formed | Good |
| Forgeability Rating | 75 |
| Machinability Rating | 30 |
Mechanical Properties (ASTM B150)
Form
| Diameter or Distance Between Parallel Surfaces, in. [mm]
| Tensile Strength, min
| Yield Strength, at 0.5% Extension Under Load, min | Elongation in 4xdiameter or 4xthickness, min, %
| ||
ksi | MPa | ksi | MPa | |||
Shapes | All Sizes | 85 | 585 | 42.5 | 295 | 10 |
Rod and Bar | 1/2 [12.7] to 1 [25.4] incl. | 110 | 760 | 68 | 470 | 10 |
over 1 [25.4] to 2 [50.8] incl. | 110 | 760 | 60 | 415 | 10 | |
over 2 [50.8] to 3 [76.2] incl. | 105 | 725 | 55 | 380 | 10 | |
Physical Properties
| US Customary | Metric | |
| Melting Point – Liquidus | 1930 F | 1054 C |
| Melting Point – Solidus | 1895 F | 1035 C |
| Density | 0.274 lb/in3 at 68 F | 7.58 gm/cm3 at 20 C |
| Specific Gravity | 7.58 | 7.58 |
| Electrical Resistivity | 116 ohms-cmil/ft at 68 F | 19.28 microhm-cm at 20 C |
| Electrical Conductivity | 7 %IACS at 68 F | 0.041 MegaSiemens/cm at 20 C |
| Thermal Conductivity | 22.6 Btu · ft/(hr · ft2·°F) at 68 F | 39.1 W/m ·°K at 20 C |
| Coefficient of Thermal Expansion | 9·10-6 per °F (68-572 F) | 16.2·10-6 per °C (20-300 C) |
| Specific Heat Capacity | 0.09 Btu/lb/°F at 68 F | 377.1 J/kg · °K at 20 C |
| Modulus of Elasticity in Tension | 17500 ksi | 121000 MPa |
| Modulus of Rigidity | 6400 ksi | 44130 MPa |