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C90200 Bronze vs. C84500 Brass

Both C90200 bronze and C84500 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% of their average alloy composition in common.

For each property being compared, the top bar is C90200 bronze and the bottom bar is C84500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
55
Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 30
28
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 41
39
Tensile Strength: Ultimate (UTS), MPa 260
240
Tensile Strength: Yield (Proof), MPa 110
97

Thermal Properties

Latent Heat of Fusion, J/g 200
180
Maximum Temperature: Mechanical, °C 180
150
Melting Completion (Liquidus), °C 1050
980
Melting Onset (Solidus), °C 880
840
Specific Heat Capacity, J/kg-K 370
360
Thermal Conductivity, W/m-K 62
72
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
16
Electrical Conductivity: Equal Weight (Specific), % IACS 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 34
28
Density, g/cm3 8.8
8.7
Embodied Carbon, kg CO2/kg material 3.3
2.9
Embodied Energy, MJ/kg 53
47
Embodied Water, L/kg 370
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63
54
Resilience: Unit (Modulus of Resilience), kJ/m3 55
45
Stiffness to Weight: Axial, points 7.0
6.6
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 8.3
7.7
Strength to Weight: Bending, points 10
9.8
Thermal Diffusivity, mm2/s 19
23
Thermal Shock Resistance, points 9.5
8.6

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.2
0 to 0.25
Copper (Cu), % 91 to 94
77 to 79
Iron (Fe), % 0 to 0.2
0 to 0.4
Lead (Pb), % 0 to 0.3
6.0 to 7.5
Nickel (Ni), % 0 to 0.5
0 to 1.0
Phosphorus (P), % 0 to 0.050
0 to 0.020
Silicon (Si), % 0 to 0.0050
0 to 0.0050
Sulfur (S), % 0 to 0.050
0 to 0.080
Tin (Sn), % 6.0 to 8.0
2.0 to 4.0
Zinc (Zn), % 0 to 0.5
10 to 14
Residuals, % 0 to 0.6
0 to 0.7