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C69710 Brass vs. C64800 Bronze

Both C69710 brass and C64800 bronze are copper alloys. Both are furnished in the H04 (full hard) temper. They have 79% of their average alloy composition in common.

For each property being compared, the top bar is C69710 brass and the bottom bar is C64800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 25
8.0
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 41
44
Shear Strength, MPa 300
380
Tensile Strength: Ultimate (UTS), MPa 470
640
Tensile Strength: Yield (Proof), MPa 230
630

Thermal Properties

Latent Heat of Fusion, J/g 240
220
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 930
1090
Melting Onset (Solidus), °C 880
1030
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 40
260
Thermal Expansion, µm/m-K 19
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
65
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
66

Otherwise Unclassified Properties

Base Metal Price, % relative 26
33
Density, g/cm3 8.3
8.9
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 44
43
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
51
Resilience: Unit (Modulus of Resilience), kJ/m3 250
1680
Stiffness to Weight: Axial, points 7.3
7.4
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 16
20
Strength to Weight: Bending, points 16
19
Thermal Diffusivity, mm2/s 12
75
Thermal Shock Resistance, points 16
23

Alloy Composition

Arsenic (As), % 0.030 to 0.060
0
Chromium (Cr), % 0
0 to 0.090
Cobalt (Co), % 0
1.0 to 3.0
Copper (Cu), % 75 to 80
92.4 to 98.8
Iron (Fe), % 0 to 0.2
0 to 1.0
Lead (Pb), % 0.5 to 1.5
0 to 0.050
Manganese (Mn), % 0 to 0.4
0
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.5
Silicon (Si), % 2.5 to 3.5
0.2 to 1.0
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 13.8 to 22
0 to 0.5
Residuals, % 0
0 to 0.5