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C85400 Brass vs. C94500 Bronze

Both C85400 brass and C94500 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 72% of their average alloy composition in common.

For each property being compared, the top bar is C85400 brass and the bottom bar is C94500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
50
Elastic (Young's, Tensile) Modulus, GPa 100
92
Elongation at Break, % 23
12
Poisson's Ratio 0.32
0.36
Shear Modulus, GPa 40
34
Tensile Strength: Ultimate (UTS), MPa 220
170
Tensile Strength: Yield (Proof), MPa 85
83

Thermal Properties

Latent Heat of Fusion, J/g 180
160
Maximum Temperature: Mechanical, °C 130
130
Melting Completion (Liquidus), °C 940
940
Melting Onset (Solidus), °C 940
800
Specific Heat Capacity, J/kg-K 380
330
Thermal Conductivity, W/m-K 89
52
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
10
Electrical Conductivity: Equal Weight (Specific), % IACS 22
9.7

Otherwise Unclassified Properties

Base Metal Price, % relative 25
30
Density, g/cm3 8.3
9.3
Embodied Carbon, kg CO2/kg material 2.8
3.2
Embodied Energy, MJ/kg 46
51
Embodied Water, L/kg 330
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
17
Resilience: Unit (Modulus of Resilience), kJ/m3 35
37
Stiffness to Weight: Axial, points 7.0
5.5
Stiffness to Weight: Bending, points 19
16
Strength to Weight: Axial, points 7.5
5.2
Strength to Weight: Bending, points 9.9
7.4
Thermal Diffusivity, mm2/s 28
17
Thermal Shock Resistance, points 7.6
6.7

Alloy Composition

Aluminum (Al), % 0 to 0.35
0 to 0.0050
Antimony (Sb), % 0
0 to 0.8
Copper (Cu), % 65 to 70
66.7 to 78
Iron (Fe), % 0 to 0.7
0 to 0.15
Lead (Pb), % 1.5 to 3.8
16 to 22
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.050
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0.5 to 1.5
6.0 to 8.0
Zinc (Zn), % 24 to 32
0 to 1.2
Residuals, % 0 to 1.1
0