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C55283 Copper vs. C55281 Copper

Both C55283 copper and C55281 copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is C55283 copper and the bottom bar is C55281 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 39
40
Tensile Strength: Ultimate (UTS), MPa 190
190

Thermal Properties

Brazing Temperature, °C 690 to 790
720 to 820
Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 720
810
Melting Onset (Solidus), °C 640
640
Specific Heat Capacity, J/kg-K 400
400
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.7
Embodied Carbon, kg CO2/kg material 7.9
7.0
Embodied Energy, MJ/kg 120
110

Common Calculations

Stiffness to Weight: Axial, points 6.8
6.9
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 6.1
6.1
Strength to Weight: Bending, points 8.5
8.5
Thermal Shock Resistance, points 8.0
7.7

Alloy Composition

Copper (Cu), % 86.2 to 87.2
88.5 to 89.4
Phosphorus (P), % 7.0 to 7.5
5.8 to 6.2
Silver (Ag), % 5.8 to 6.2
4.8 to 5.2
Residuals, % 0
0 to 0.15