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C31400 Bronze vs. C69710 Brass

Both C31400 bronze and C69710 brass are copper alloys. They have 87% of their average alloy composition in common.

For each property being compared, the top bar is C31400 bronze and the bottom bar is C69710 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 6.8 to 29
25
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 42
41
Shear Strength, MPa 180 to 240
300
Tensile Strength: Ultimate (UTS), MPa 270 to 420
470
Tensile Strength: Yield (Proof), MPa 78 to 310
230

Thermal Properties

Latent Heat of Fusion, J/g 200
240
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 1040
930
Melting Onset (Solidus), °C 1010
880
Specific Heat Capacity, J/kg-K 380
400
Thermal Conductivity, W/m-K 180
40
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 43
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 29
26
Density, g/cm3 8.8
8.3
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 42
44
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 59
99
Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 420
250
Stiffness to Weight: Axial, points 7.1
7.3
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.7 to 13
16
Strength to Weight: Bending, points 11 to 14
16
Thermal Diffusivity, mm2/s 54
12
Thermal Shock Resistance, points 9.6 to 15
16

Alloy Composition

Arsenic (As), % 0
0.030 to 0.060
Copper (Cu), % 87.5 to 90.5
75 to 80
Iron (Fe), % 0 to 0.1
0 to 0.2
Lead (Pb), % 1.3 to 2.5
0.5 to 1.5
Manganese (Mn), % 0
0 to 0.4
Nickel (Ni), % 0 to 0.7
0
Silicon (Si), % 0
2.5 to 3.5
Zinc (Zn), % 5.8 to 11.2
13.8 to 22
Residuals, % 0
0 to 0.5