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C42520
Elements | |||||||
---|---|---|---|---|---|---|---|
Cu(1) | Pb | Sn | Zn | Fe | P | Ni | |
(1) Cu + Sum of Named Elements 99.7% min. |
|||||||
Min (%) | 88.0 | 1.5 | 0.05 | 0.01 | 0.05 | ||
Max (%) | 91.0 | 0.05 | 3.0 | Rem | 0.20 | 0.20 | 0.20 |
Form | Temper | Temper Code | Tensile Strength (ksi) |
YS-0.2% Offset (ksi) |
Elongation (%) |
---|---|---|---|---|---|
* Measured at room temperature, 68°F (20°C). | |||||
Flat Products | 1/2 Hard | H02 |
76 Typ |
68 Typ |
15 Typ |
1/4 Hard | H01 |
65 Typ |
50 Typ |
24 Typ |
|
Extra Hard | H06 |
98 Typ |
94 Typ |
6 Typ |
|
Extra Spring | H10 |
110 Typ |
106 Typ |
2 Typ |
|
Hard | H04 |
88 Typ |
83 Typ |
8 Typ |
|
Nominal Grain Size 0.015 mm | OS015 |
58 Typ |
32 Typ |
42 Typ |
|
Spring | H08 |
104 Typ |
100 Typ |
3 Typ |
Melting Point - Liquidus°F | 1900 |
---|---|
Melting Point - Solidus°F | 1850 |
Densitylb/cu in. at 68°F | 0.318 |
Specific Gravity | 8.8 |
Electrical Conductivity% IACS at 68°F | 30 |
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 75 |
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) | 10.2 |
Modulus of Elasticity in Tensionksi | 16000 |
Technique | Suitability |
---|---|
Soldering | Excellent |
Brazing | Excellent |
Oxyacetylene Welding | Good |
Gas Shielded Arc Welding | Good |
Coated Metal Arc Welding | Not Recommended |
Spot Weld | Not Recommended |
Seam Weld | Not Recommended |
Butt Weld | Good |
Capacity for Being Cold Worked | Excellent |
Capacity for Being Hot Formed | Fair |
Machinability Rating | 30 |
Common Fabrication Processes
Treatment | Minimum* | Maximum* | ||
---|---|---|---|---|
* Temperature is measured in Fahrenheit. | ||||
Annealing | 700 | 1350 |
Product Category | Product | Reason Category | Reason |
---|---|---|---|
Automotive | Terminals, automotive | Conductivity (Electrical) | Electrical Conductivity |
Terminals, automotive | Mechanical Properties | Ductility | |
Terminals, automotive | Mechanical Properties | Strength | |
Electrical | Connectors, electronic | Conductivity (Electrical) | Electrical Conductivity |
Connectors, electronic | Corrosion Resistance | Stress Corrosion Crack Resistant | |
Connectors, electronic | Mechanical Properties | Strength, Moderate | |
Connectors, electronic | Stress Relaxation | Stress Relaxation Resistance | |
Contact springs | Conductivity (Electrical) | Electrical Conductivity | |
Contact springs | Corrosion Resistance | Corrosion Resistance | |
Contact springs | Mechanical Properties | Moderate to High Strength | |
Contact springs | Solderability | Solderability | |
Lead Frames | Conductivity (Electrical) | Electrical Conductivity |
Form | Specific Sub-Form | Application | System | Standard | Description |
---|---|---|---|---|---|
Bar | ASTM | B591 | COPPER-ZINC-TIN ALLOY PLATE, SHEET, STRIP, AND ROLLED BAR | ||
Strip | ASTM | B591 | COPPER-ZINC-TIN ALLOY PLATE, SHEET, STRIP, AND ROLLED BAR | ||
ASTM | B888/B88M | COPPER ALLOY STRIP FOR USE IN MANUFACTURE OF ELECTRICAL CONNECTORS OR SPRING CONTACTS |
Corrosion Properties