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C64800 Bronze vs. C69710 Brass

Both C64800 bronze and C69710 brass 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 C64800 bronze and the bottom bar is C69710 brass.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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