The copper alloy UNS C61900 has high corrosion resistance and good hot formability. It is available as flat products.
| Electrical | Marine |
|---|---|
| Contacts | Marine Hardware |
| Springs | |
| Switch Components |
C61900
Description
COMMON FABRICATION PROCESSES
COMMON FABRICATION PROCESSES
- Bending
- Blanking
- Forming
- Shearing
- Stamping
CHEMICAL COMPOSITION
CHEMICAL COMPOSITION
| Elements | ||||||
|---|---|---|---|---|---|---|
| Cu(1,2) | Pb | Sn | Zn | Fe | Al | |
| (1) Cu value includes Ag. (2) Cu + Sum of Named Elements 99.5% min. |
||||||
| Min (%) | 3.0 | 8.5 | ||||
| Max (%) | Rem | 0.02 | 0.6 | 0.8 | 4.5 | 10.0 |
MECHANICAL PROPERTIES
MECHANICAL PROPERTIES
| Form | Temper | Temper Code | Tensile Strength (ksi) |
YS-0.2% Offset (ksi) |
YS-0.5% Ext (ksi) |
Elongation (%) |
Rockwell B scale | Rockwell 30T scale | Fatigue Strength** (ksi) |
Section Size (in) |
|---|---|---|---|---|---|---|---|---|---|---|
| * Measured at room temperature, 68°F (20°C).** Fatigue Strength: 100 x 106 cycles, unless indicated as [N] x 106. | ||||||||||
| Flat Products | 1/2 Hard | H02 | 104 Typ | 80 Typ | 21 Typ | 93 Typ | 78 Typ | 0.04 | ||
| Annealed | O61 | 92 Typ | 60 Typ | 49 Typ | 30 Typ | 72 Typ | 0.04 | |||
| Extra Spring | H10 | 137 Typ | 117 Typ | 3 Typ | 100 Typ | 84 Typ | 0.04 | |||
| Extra Spring and Stress Relieved | HR10 | 152 Typ | 145 Typ | 1 Typ | 0.04 | |||||
| Hard | H04 | 121 Typ | 102 Typ | 8 Typ | 98 Typ | 83 Typ | 0.04 | |||
| Hard Temper and Treated | HT04 | 135 Typ | 120 Typ | 2 Typ | 0.04 | |||||
| Spring | H08 | 130 Typ | 108 Typ | 4 Typ | 100 Typ | 83 Typ | 34 Typ | 0.04 | ||
| Spring Temper and Treated | HT08 | 145 Typ | 135 Typ | 1.5 Typ | 39 Typ | 0.04 | ||||
PHYSICAL PROPERTIES
PHYSICAL PROPERTIES
| Melting Point – Liquidus°F | 1920 |
|---|---|
| Melting Point – Solidus°F | 1905 |
| Densitylb/cu in. at 68°F | 0.271 |
| Specific Gravity | 7.5 |
| Electrical Conductivity% IACS at 68°F | 10.5 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 45.9 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 9 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.1 |
| Modulus of Elasticity in Tensionksi | 16000 |
FABRICATION PROPERTIES
FABRICATION PROPERTIES
| Technique | Suitability |
|---|---|
| Soldering | Fair |
| Brazing | Fair |
| Oxyacetylene Welding | Not Recommended |
| Gas Shielded Arc Welding | Excellent |
| Coated Metal Arc Welding | Good |
| Spot Weld | Good |
| Seam Weld | Good |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Fair |
| Capacity for Being Hot Formed | Excellent |
APPLICABLE SPECIFICATIONS
APPLICABLE SPECIFICATIONS
| Form | Specific Sub-Form | Application | System | Standard | Description |
|---|---|---|---|---|---|
| Bar | ASTM | B124/B124M | COPPER AND COPPER-ALLOY FORGING ROD, BAR AND SHAPES | ||
| ASTM | B150/B150M | ALUMINUM BRONZE ROD, BAR AND SHAPES | |||
| Die | Forgings | ASTM | B283/B283M | COPPER AND COPPER ALLOY DIE FORGINGS (HOT PRESSED) | |
| Electrode | Welding | MILITARY | MIL-E-23765/3 | ELECTRODES, WELDING, BARE, COPPER AND COPPER ALLOY | |
| Forgings, Die (Hot Pressed) | ASME | SB283 | COPPER AND COPPER ALLOY DIE FORGINGS (HOT PRESSED) | ||
| Rod | ASTM | B124/B124M | COPPER AND COPPER-ALLOY FORGING ROD, BAR AND SHAPES | ||
| Rod, Bar & Shapes | Aluminum Bronze | ASME | SB150 | ALUMINUM BRONZE ROD, BAR, AND SHAPES | |
| Aluminum Bronze | ASTM | B150/B150M | ALUMINUM BRONZE ROD, BAR AND SHAPES | ||
| Shapes | ASTM | B150/B150M | ALUMINUM BRONZE ROD, BAR AND SHAPES | ||
| ASTM | B124/B124M | COPPER AND COPPER-ALLOY FORGING ROD, BAR AND SHAPES |
