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C67400 Bronze vs. C71520 Copper-nickel

Both C67400 bronze and C71520 copper-nickel are copper alloys. They have 60% of their average alloy composition in common.

For each property being compared, the top bar is C67400 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, % 22 to 28
10 to 45
Poisson's Ratio 0.31
0.33
Rockwell B Hardness 78 to 85
35 to 86
Shear Modulus, GPa 41
51
Shear Strength, MPa 310 to 350
250 to 340
Tensile Strength: Ultimate (UTS), MPa 480 to 610
370 to 570
Tensile Strength: Yield (Proof), MPa 250 to 370
140 to 430

Thermal Properties

Latent Heat of Fusion, J/g 190
230
Maximum Temperature: Mechanical, °C 130
260
Melting Completion (Liquidus), °C 890
1170
Melting Onset (Solidus), °C 870
1120
Specific Heat Capacity, J/kg-K 400
400
Thermal Conductivity, W/m-K 100
32
Thermal Expansion, µm/m-K 21
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
5.7
Electrical Conductivity: Equal Weight (Specific), % IACS 26
5.8

Otherwise Unclassified Properties

Base Metal Price, % relative 23
40
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 2.8
5.0
Embodied Energy, MJ/kg 48
73
Embodied Water, L/kg 330
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
54 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 660
67 to 680
Stiffness to Weight: Axial, points 7.5
8.6
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 17 to 22
12 to 18
Strength to Weight: Bending, points 17 to 20
13 to 17
Thermal Diffusivity, mm2/s 32
8.9
Thermal Shock Resistance, points 16 to 20
12 to 19

Alloy Composition

Aluminum (Al), % 0.5 to 2.0
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 57 to 60
65 to 71.6
Iron (Fe), % 0 to 0.35
0.4 to 1.0
Lead (Pb), % 0 to 0.5
0 to 0.020
Manganese (Mn), % 2.0 to 3.5
0 to 1.0
Nickel (Ni), % 0 to 0.25
28 to 33
Phosphorus (P), % 0
0 to 0.2
Silicon (Si), % 0.5 to 1.5
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 31.1 to 40
0 to 0.5
Residuals, % 0
0 to 0.5

Comparable Variants