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C36500 Muntz Metal vs. C68100 Brass

Both C36500 Muntz Metal and C68100 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 98% 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 C36500 Muntz Metal and the bottom bar is C68100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
100
Elongation at Break, % 40
29
Poisson's Ratio 0.3
0.3
Shear Modulus, GPa 39
40
Tensile Strength: Ultimate (UTS), MPa 400
380
Tensile Strength: Yield (Proof), MPa 160
140

Thermal Properties

Latent Heat of Fusion, J/g 170
170
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 900
890
Melting Onset (Solidus), °C 890
870
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 120
98
Thermal Expansion, µm/m-K 21
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
24
Electrical Conductivity: Equal Weight (Specific), % IACS 32
27

Otherwise Unclassified Properties

Base Metal Price, % relative 23
23
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 46
47
Embodied Water, L/kg 320
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
86
Resilience: Unit (Modulus of Resilience), kJ/m3 120
94
Stiffness to Weight: Axial, points 7.2
7.3
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 14
13
Strength to Weight: Bending, points 15
15
Thermal Diffusivity, mm2/s 40
32
Thermal Shock Resistance, points 13
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Copper (Cu), % 58 to 61
56 to 60
Iron (Fe), % 0 to 0.15
0.25 to 1.3
Lead (Pb), % 0.25 to 0.7
0 to 0.050
Manganese (Mn), % 0
0.010 to 0.5
Silicon (Si), % 0
0.040 to 0.15
Tin (Sn), % 0 to 0.25
0.75 to 1.1
Zinc (Zn), % 37.5 to 41.8
36.4 to 43
Residuals, % 0
0 to 0.5