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C38000 Brass vs. C38500 Bronze

Both C38000 brass and C38500 bronze are copper alloys. Both are furnished in the M20 (as hot rolled) condition. Their average alloy composition is basically identical. There are 27 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C38000 brass and the bottom bar is C38500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
100
Elongation at Break, % 17
17
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 39
37
Shear Strength, MPa 230
230
Tensile Strength: Ultimate (UTS), MPa 380
370
Tensile Strength: Yield (Proof), MPa 120
130

Thermal Properties

Latent Heat of Fusion, J/g 170
160
Maximum Temperature: Mechanical, °C 110
110
Melting Completion (Liquidus), °C 800
890
Melting Onset (Solidus), °C 760
880
Specific Heat Capacity, J/kg-K 380
380
Thermal Conductivity, W/m-K 110
120
Thermal Expansion, µm/m-K 21
21

Otherwise Unclassified Properties

Base Metal Price, % relative 22
22
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 46
45
Embodied Water, L/kg 330
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 50
48
Resilience: Unit (Modulus of Resilience), kJ/m3 74
78
Stiffness to Weight: Axial, points 7.1
7.0
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 13
13
Strength to Weight: Bending, points 14
14
Thermal Diffusivity, mm2/s 37
40
Thermal Shock Resistance, points 13
12

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Copper (Cu), % 55 to 60
55 to 59
Iron (Fe), % 0 to 0.35
0 to 0.35
Lead (Pb), % 1.5 to 2.5
2.5 to 3.5
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 35.9 to 43.5
36.7 to 42.5
Residuals, % 0
0 to 0.5