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C64725
| Elements | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cu(1,2) | Pb | Sn | Zn | Fe | Ni(3) | Ca | Cr | Mg | Si | |
|
(1) Cu + Sum of Named Elements 99.5% min. (2) Cu value includes Ag. (3) Ni value includes Co. |
||||||||||
| Min (%) | 95.0 | 0.20 | 0.50 | 1.3 | 0.20 | |||||
| Max (%) | 0.01 | 0.8 | 1.5 | 0.25 | 2.7 | 0.01 | 0.09 | 0.20 | 0.8 | |
| Form | Temper | Temper Code | Tensile Strength (ksi) |
YS-0.2% Offset (ksi) |
Elongation (%) |
Vickers Hardness, 500 gm |
|---|---|---|---|---|---|---|
| * Measured at room temperature, 68°F (20°C). | ||||||
| Flat Products | 1/2 Hard and Stress Relieved | HR02 |
72 Typ |
66 Typ |
8 Min |
155 Typ |
| Extra Spring and Stress Relieved | HR10 |
102 Min |
94 Min |
200 Min |
||
| Hard and Stress Relieved | HR04 |
80 Typ |
74 Typ |
6 Min |
170 Typ |
|
| Precipitation or Spinodal Heat-treated, 1/2 Hard and Thermal Stress Relieved | TR02 |
86 Typ |
81 Typ |
8 Min |
183 Typ |
|
| Precipitation or Spinodal Heat-treated, Extra Hard and Thermal Stress Relieved | TR06 |
86 Typ |
81 Typ |
4 Min |
183 Typ |
|
| Spring and Stress Relieved | HR08 |
95 Typ |
89 Typ |
5 Min |
198 Typ |
|
| Spring and Stress Relieved | HR08 |
95 Typ |
89 Typ |
2 Min |
198 Typ |
|
| (1)HR Temper, 0.37, .0215 TR Temper | |
| Melting Point - Liquidus°F | 1985 |
|---|---|
| Melting Point - Solidus°F | 1920 |
| Densitylb/cu in. at 68°F | 0.32 |
| Specific Gravity | 8.87 |
| Electrical Conductivity% IACS at 68°F | 48 (1) |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 110 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 9.5 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 18900 |
| Technique | Suitability |
|---|---|
| Soldering | Good |
| Brazing | Fair |
| Oxyacetylene Welding | Fair |
| Gas Shielded Arc Welding | Good |
| Coated Metal Arc Welding | Fair |
| Spot Weld | Good |
| Seam Weld | Good |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Good |
| Capacity for Being Hot Formed | Good |
| Forgeability Rating | 70 |
| Machinability Rating | 20 |
Common Fabrication Processes
No fabrication process properties for this alloy
| Treatment | Minimum* | Maximum* | ||
|---|---|---|---|---|
| * Temperature is measured in Fahrenheit. | ||||
| Annealing | 660 | 1200 | ||
| Hot Working Temperature | 1557 | 1755 | ||
| Product Category | Product | Reason Category | Reason |
|---|---|---|---|
| Electrical | Circuit Breakers | Conductivity (Electrical) | Electrical Conductivity |
| Circuit Breakers | Friction & Wear Properties | Wear Resistance | |
| Circuit Breakers | Mechanical Properties | Strength | |
| Connectors, Electrical, Lead-Free | Conductivity (Electrical) | Electrical Conductivity | |
| Connectors, Electrical, Lead-Free | Conductivity (Thermal) | Thermal Conductivity | |
| Connectors, Electrical, Lead-Free | Corrosion Resistance | Corrosion Resistance | |
| Connectors, Electrical, Lead-Free | Corrosion Resistance | Stress corrosion resistance, high | |
| Connectors, Electrical, Lead-Free | Forming Characteristics | Formability | |
| Connectors, Electrical, Lead-Free | Plating Characteristics | Platability | |
| Fuse Clips | Conductivity (Electrical) | Electrical Conductivity | |
| Fuse Clips | Forming Characteristics | Formability | |
| Lead Frames | Conductivity (Electrical) | Electrical Conductivity | |
| Springs, contact | Conductivity (Electrical) | Electrical Conductivity | |
| Springs, contact | Conductivity (Thermal) | Thermal Conductivity | |
| Springs, contact | Forming Characteristics | Formability | |
| Springs, contact | Mechanical Properties | Fatigue Strength, High | |
| Springs, contact | Mechanical Properties | Strength, High | |
| Springs, contact | Mechanical Properties | Thermal Softening Resistance | |
| Terminals, electrical | Conductivity (Thermal) | Thermal Conductivity | |
| Terminals, electrical | Corrosion Resistance | Corrosion Resistance | |
| Terminals, electrical | Mechanical Properties | Ductility |
| Form | Specific Sub-Form | Application | System | Standard | Description |
|---|---|---|---|---|---|
| Sheet & Strip | ASTM | B422/B422M | COPPER-ALUMINUM-SILICON-COBALT ALLOY AND COPPER-NICKEL-ALUMINUM-SILICON ALLOY SHEET AND STRIP | ||
| Strip | ASTM | B888/B88M | COPPER ALLOY STRIP FOR USE IN MANUFACTURE OF ELECTRICAL CONNECTORS OR SPRING CONTACTS |
Corrosion Properties
No Corrosion Properties Available.