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C95700 Bronze vs. C85200 Brass

Both C95700 bronze and C85200 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 73% of their average alloy composition in common.

For each property being compared, the top bar is C95700 bronze and the bottom bar is C85200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
110
Elongation at Break, % 23
28
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 47
40
Tensile Strength: Ultimate (UTS), MPa 680
270
Tensile Strength: Yield (Proof), MPa 310
95

Thermal Properties

Latent Heat of Fusion, J/g 230
180
Maximum Temperature: Mechanical, °C 220
140
Melting Completion (Liquidus), °C 990
940
Melting Onset (Solidus), °C 950
930
Specific Heat Capacity, J/kg-K 440
380
Thermal Conductivity, W/m-K 12
84
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
18
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
19

Otherwise Unclassified Properties

Base Metal Price, % relative 26
26
Density, g/cm3 8.2
8.4
Embodied Carbon, kg CO2/kg material 3.3
2.8
Embodied Energy, MJ/kg 54
46
Embodied Water, L/kg 360
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
59
Resilience: Unit (Modulus of Resilience), kJ/m3 390
42
Stiffness to Weight: Axial, points 8.5
7.0
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 23
8.9
Strength to Weight: Bending, points 21
11
Thermal Diffusivity, mm2/s 3.3
27
Thermal Shock Resistance, points 21
9.3

Alloy Composition


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Aluminum (Al), % 7.0 to 8.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 71 to 78.5
70 to 74
Iron (Fe), % 2.0 to 4.0
0 to 0.6
Lead (Pb), % 0 to 0.030
1.5 to 3.8
Manganese (Mn), % 11 to 14
0
Nickel (Ni), % 1.5 to 3.0
0 to 1.0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.1
0 to 0.050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
0.7 to 2.0
Zinc (Zn), % 0
20 to 27
Residuals, % 0 to 0.5
0 to 0.9