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C68800 Brass vs. C90200 Bronze

Both C68800 brass and C90200 bronze are copper alloys. They have 74% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C68800 brass and the bottom bar is C90200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 2.0 to 36
30
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 41
41
Tensile Strength: Ultimate (UTS), MPa 570 to 890
260
Tensile Strength: Yield (Proof), MPa 390 to 790
110

Thermal Properties

Latent Heat of Fusion, J/g 190
200
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 960
1050
Melting Onset (Solidus), °C 950
880
Specific Heat Capacity, J/kg-K 400
370
Thermal Conductivity, W/m-K 40
62
Thermal Expansion, µm/m-K 19
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
13
Electrical Conductivity: Equal Weight (Specific), % IACS 20
13

Otherwise Unclassified Properties

Base Metal Price, % relative 26
34
Density, g/cm3 8.2
8.8
Embodied Carbon, kg CO2/kg material 2.8
3.3
Embodied Energy, MJ/kg 48
53
Embodied Water, L/kg 350
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 180
63
Resilience: Unit (Modulus of Resilience), kJ/m3 710 to 2860
55
Stiffness to Weight: Axial, points 7.3
7.0
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 19 to 30
8.3
Strength to Weight: Bending, points 19 to 25
10
Thermal Diffusivity, mm2/s 12
19
Thermal Shock Resistance, points 19 to 30
9.5

Alloy Composition


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Aluminum (Al), % 3.0 to 3.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Cobalt (Co), % 0.25 to 0.55
0
Copper (Cu), % 70.8 to 75.5
91 to 94
Iron (Fe), % 0 to 0.2
0 to 0.2
Lead (Pb), % 0 to 0.050
0 to 0.3
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
6.0 to 8.0
Zinc (Zn), % 21.3 to 24.1
0 to 0.5
Residuals, % 0 to 0.5
0 to 0.6