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C68400 Brass vs. C38500 Bronze

Both C68400 brass and C38500 bronze are copper alloys. They have a moderately high 91% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C68400 brass and the bottom bar is C38500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 18
17
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 41
37
Shear Strength, MPa 330
230
Tensile Strength: Ultimate (UTS), MPa 540
370
Tensile Strength: Yield (Proof), MPa 310
130

Thermal Properties

Latent Heat of Fusion, J/g 210
160
Maximum Temperature: Mechanical, °C 130
110
Melting Completion (Liquidus), °C 840
890
Melting Onset (Solidus), °C 820
880
Specific Heat Capacity, J/kg-K 400
380
Thermal Conductivity, W/m-K 66
120
Thermal Expansion, µm/m-K 20
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
28
Electrical Conductivity: Equal Weight (Specific), % IACS 99
31

Otherwise Unclassified Properties

Base Metal Price, % relative 23
22
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 47
45
Embodied Water, L/kg 320
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
48
Resilience: Unit (Modulus of Resilience), kJ/m3 460
78
Stiffness to Weight: Axial, points 7.5
7.0
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 19
13
Strength to Weight: Bending, points 19
14
Thermal Diffusivity, mm2/s 21
40
Thermal Shock Resistance, points 18
12

Alloy Composition


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Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Copper (Cu), % 59 to 64
55 to 59
Iron (Fe), % 0 to 1.0
0 to 0.35
Lead (Pb), % 0 to 0.090
2.5 to 3.5
Manganese (Mn), % 0.2 to 1.5
0
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0.030 to 0.3
0
Silicon (Si), % 1.5 to 2.5
0
Tin (Sn), % 0 to 0.5
0
Zinc (Zn), % 28.6 to 39.3
36.7 to 42.5
Residuals, % 0 to 0.5
0 to 0.5