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C62500 Bronze vs. C68400 Brass

Both C62500 bronze and C68400 brass are copper alloys. Both are furnished in the M30 (as hot extruded) condition. They have 63% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C62500 bronze and the bottom bar is C68400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 1.0
18
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 42
41
Shear Strength, MPa 410
330
Tensile Strength: Ultimate (UTS), MPa 690
540
Tensile Strength: Yield (Proof), MPa 410
310

Thermal Properties

Latent Heat of Fusion, J/g 230
210
Maximum Temperature: Mechanical, °C 230
130
Melting Completion (Liquidus), °C 1050
840
Melting Onset (Solidus), °C 1050
820
Specific Heat Capacity, J/kg-K 460
400
Thermal Conductivity, W/m-K 47
66
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
87
Electrical Conductivity: Equal Weight (Specific), % IACS 11
99

Otherwise Unclassified Properties

Base Metal Price, % relative 26
23
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 3.3
2.7
Embodied Energy, MJ/kg 55
47
Embodied Water, L/kg 410
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.0
81
Resilience: Unit (Modulus of Resilience), kJ/m3 750
460
Stiffness to Weight: Axial, points 7.8
7.5
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 13
21
Thermal Shock Resistance, points 24
18

Alloy Composition


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Aluminum (Al), % 12.5 to 13.5
0 to 0.5
Boron (B), % 0
0.0010 to 0.030
Copper (Cu), % 78.5 to 84
59 to 64
Iron (Fe), % 3.5 to 5.5
0 to 1.0
Lead (Pb), % 0
0 to 0.090
Manganese (Mn), % 0 to 2.0
0.2 to 1.5
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0.030 to 0.3
Silicon (Si), % 0
1.5 to 2.5
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0
28.6 to 39.3
Residuals, % 0 to 0.5
0 to 0.5