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C55284 Copper vs. C55280 Copper

Both C55284 copper and C55280 copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 87% of their average alloy composition in common.

For each property being compared, the top bar is C55284 copper and the bottom bar is C55280 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 38
40
Tensile Strength: Ultimate (UTS), MPa 180
180

Thermal Properties

Brazing Temperature, °C 700 to 820
730 to 820
Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 800
790
Melting Onset (Solidus), °C 640
640
Specific Heat Capacity, J/kg-K 380
410
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.5
Embodied Carbon, kg CO2/kg material 16
4.2
Embodied Energy, MJ/kg 260
67

Common Calculations

Stiffness to Weight: Axial, points 6.5
6.9
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 5.6
5.9
Strength to Weight: Bending, points 8.0
8.3
Thermal Shock Resistance, points 7.4
7.4

Alloy Composition

Copper (Cu), % 79.2 to 80.7
90.5 to 91.4
Phosphorus (P), % 4.8 to 5.2
6.8 to 7.2
Silver (Ag), % 14.5 to 15.5
1.8 to 2.2
Residuals, % 0 to 0.15
0 to 0.15