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C21000 Brass vs. C37000 Muntz Metal

Both C21000 brass and C37000 Muntz Metal are copper alloys. They have 65% of their average alloy composition in common. There are 30 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 C21000 brass and the bottom bar is C37000 Muntz Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 2.9 to 50
40
Poisson's Ratio 0.34
0.31
Rockwell B Hardness 36 to 73
45
Shear Modulus, GPa 43
39
Shear Strength, MPa 180 to 280
270
Tensile Strength: Ultimate (UTS), MPa 240 to 450
400
Tensile Strength: Yield (Proof), MPa 69 to 440
160

Thermal Properties

Latent Heat of Fusion, J/g 200
170
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 1070
900
Melting Onset (Solidus), °C 1050
890
Specific Heat Capacity, J/kg-K 390
380
Thermal Conductivity, W/m-K 230
120
Thermal Expansion, µm/m-K 18
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
27
Electrical Conductivity: Equal Weight (Specific), % IACS 57
30

Otherwise Unclassified Properties

Base Metal Price, % relative 30
23
Density, g/cm3 8.8
8.1
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 42
45
Embodied Water, L/kg 310
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 100
130
Resilience: Unit (Modulus of Resilience), kJ/m3 21 to 830
120
Stiffness to Weight: Axial, points 7.2
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.4 to 14
14
Strength to Weight: Bending, points 9.6 to 15
15
Thermal Diffusivity, mm2/s 69
39
Thermal Shock Resistance, points 8.1 to 15
13

Alloy Composition

Copper (Cu), % 94 to 96
59 to 62
Iron (Fe), % 0 to 0.050
0 to 0.15
Lead (Pb), % 0 to 0.030
0.8 to 1.5
Zinc (Zn), % 3.7 to 6.0
36 to 40.2
Residuals, % 0
0 to 0.4