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C65500 Bronze vs. C72700 Copper-nickel

Both C65500 bronze and C72700 copper-nickel are copper alloys. They have 85% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C65500 bronze and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Elongation at Break, % 4.0 to 70
4.0 to 36
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
44
Shear Strength, MPa 260 to 440
310 to 620
Tensile Strength: Ultimate (UTS), MPa 360 to 760
460 to 1070
Tensile Strength: Yield (Proof), MPa 120 to 430
580 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 260
210
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 1030
1100
Melting Onset (Solidus), °C 970
930
Specific Heat Capacity, J/kg-K 400
380
Thermal Conductivity, W/m-K 36
54
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
11
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 29
36
Density, g/cm3 8.6
8.8
Embodied Carbon, kg CO2/kg material 2.7
4.0
Embodied Energy, MJ/kg 42
62
Embodied Water, L/kg 300
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11 to 450
20 to 380
Resilience: Unit (Modulus of Resilience), kJ/m3 62 to 790
1420 to 4770
Stiffness to Weight: Axial, points 7.5
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 12 to 24
14 to 34
Strength to Weight: Bending, points 13 to 21
15 to 26
Thermal Diffusivity, mm2/s 10
16
Thermal Shock Resistance, points 12 to 26
16 to 38

Alloy Composition

Copper (Cu), % 91.5 to 96.7
82.1 to 86
Iron (Fe), % 0 to 0.8
0 to 0.5
Lead (Pb), % 0 to 0.050
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0.5 to 1.3
0.050 to 0.3
Nickel (Ni), % 0 to 0.6
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Silicon (Si), % 2.8 to 3.8
0
Tin (Sn), % 0
5.5 to 6.5
Zinc (Zn), % 0 to 1.5
0 to 0.5
Residuals, % 0
0 to 0.3