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C64210 Bronze vs. C71520 Copper-nickel

Both C64210 bronze and C71520 copper-nickel are copper alloys. They have 69% of their average alloy composition in common.

For each property being compared, the top bar is C64210 bronze and the bottom bar is C71520 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
140
Elongation at Break, % 35
10 to 45
Poisson's Ratio 0.34
0.33
Rockwell B Hardness 77
35 to 86
Shear Modulus, GPa 42
51
Shear Strength, MPa 380
250 to 340
Tensile Strength: Ultimate (UTS), MPa 570
370 to 570
Tensile Strength: Yield (Proof), MPa 290
140 to 430

Thermal Properties

Latent Heat of Fusion, J/g 250
230
Maximum Temperature: Mechanical, °C 210
260
Melting Completion (Liquidus), °C 1040
1170
Melting Onset (Solidus), °C 990
1120
Specific Heat Capacity, J/kg-K 430
400
Thermal Conductivity, W/m-K 48
32
Thermal Expansion, µm/m-K 18
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
5.7
Electrical Conductivity: Equal Weight (Specific), % IACS 14
5.8

Otherwise Unclassified Properties

Base Metal Price, % relative 29
40
Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 3.0
5.0
Embodied Energy, MJ/kg 49
73
Embodied Water, L/kg 360
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
54 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 360
67 to 680
Stiffness to Weight: Axial, points 7.4
8.6
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 19
12 to 18
Strength to Weight: Bending, points 18
13 to 17
Thermal Diffusivity, mm2/s 13
8.9
Thermal Shock Resistance, points 21
12 to 19

Alloy Composition

Aluminum (Al), % 6.3 to 7.0
0
Arsenic (As), % 0 to 0.15
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 89 to 92.2
65 to 71.6
Iron (Fe), % 0 to 0.3
0.4 to 1.0
Lead (Pb), % 0 to 0.050
0 to 0.020
Manganese (Mn), % 0 to 0.1
0 to 1.0
Nickel (Ni), % 0 to 0.25
28 to 33
Phosphorus (P), % 0
0 to 0.2
Silicon (Si), % 1.5 to 2.0
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.5
0 to 0.5
Residuals, % 0
0 to 0.5

Comparable Variants