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C85400 Brass vs. C36500 Muntz Metal

Both C85400 brass and C36500 Muntz Metal are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 88% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C85400 brass and the bottom bar is C36500 Muntz Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
100
Elongation at Break, % 23
40
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 40
39
Tensile Strength: Ultimate (UTS), MPa 220
400
Tensile Strength: Yield (Proof), MPa 85
160

Thermal Properties

Latent Heat of Fusion, J/g 180
170
Maximum Temperature: Mechanical, °C 130
120
Melting Completion (Liquidus), °C 940
900
Melting Onset (Solidus), °C 940
890
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 89
120
Thermal Expansion, µm/m-K 20
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
28
Electrical Conductivity: Equal Weight (Specific), % IACS 22
32

Otherwise Unclassified Properties

Base Metal Price, % relative 25
23
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 2.8
2.7
Embodied Energy, MJ/kg 46
46
Embodied Water, L/kg 330
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
130
Resilience: Unit (Modulus of Resilience), kJ/m3 35
120
Stiffness to Weight: Axial, points 7.0
7.2
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 7.5
14
Strength to Weight: Bending, points 9.9
15
Thermal Diffusivity, mm2/s 28
40
Thermal Shock Resistance, points 7.6
13

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Copper (Cu), % 65 to 70
58 to 61
Iron (Fe), % 0 to 0.7
0 to 0.15
Lead (Pb), % 1.5 to 3.8
0.25 to 0.7
Nickel (Ni), % 0 to 1.0
0
Silicon (Si), % 0 to 0.050
0
Tin (Sn), % 0.5 to 1.5
0 to 0.25
Zinc (Zn), % 24 to 32
37.5 to 41.8
Residuals, % 0
0 to 0.4