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C90500 Gun Metal vs. C28500 Muntz Metal

Both C90500 gun metal and C28500 Muntz Metal are copper alloys. They have 60% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C90500 gun metal and the bottom bar is C28500 Muntz Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 20
20
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 320
520
Tensile Strength: Yield (Proof), MPa 160
380

Thermal Properties

Latent Heat of Fusion, J/g 190
170
Maximum Temperature: Mechanical, °C 170
110
Melting Completion (Liquidus), °C 1000
900
Melting Onset (Solidus), °C 850
890
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 75
100
Thermal Expansion, µm/m-K 18
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
29
Electrical Conductivity: Equal Weight (Specific), % IACS 11
33

Otherwise Unclassified Properties

Base Metal Price, % relative 35
22
Density, g/cm3 8.7
7.9
Embodied Carbon, kg CO2/kg material 3.6
2.7
Embodied Energy, MJ/kg 59
46
Embodied Water, L/kg 390
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
94
Resilience: Unit (Modulus of Resilience), kJ/m3 110
700
Stiffness to Weight: Axial, points 6.9
7.3
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 10
18
Strength to Weight: Bending, points 12
18
Thermal Diffusivity, mm2/s 23
33
Thermal Shock Resistance, points 12
17

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Copper (Cu), % 86 to 89
57 to 59
Iron (Fe), % 0 to 0.2
0 to 0.35
Lead (Pb), % 0 to 0.3
0 to 0.25
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 9.0 to 11
0
Zinc (Zn), % 1.0 to 3.0
39.5 to 43
Residuals, % 0
0 to 0.9