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C90500 Gun Metal vs. C47940 Brass

Both C90500 gun metal and C47940 brass are copper alloys. They have 69% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C90500 gun metal and the bottom bar is C47940 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 20
14 to 34
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 320
380 to 520
Tensile Strength: Yield (Proof), MPa 160
160 to 390

Thermal Properties

Latent Heat of Fusion, J/g 190
170
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 1000
850
Melting Onset (Solidus), °C 850
800
Specific Heat Capacity, J/kg-K 370
380
Thermal Conductivity, W/m-K 75
110
Thermal Expansion, µm/m-K 18
20

Otherwise Unclassified Properties

Base Metal Price, % relative 35
25
Density, g/cm3 8.7
8.2
Embodied Carbon, kg CO2/kg material 3.6
2.8
Embodied Energy, MJ/kg 59
47
Embodied Water, L/kg 390
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
68 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 110
120 to 740
Stiffness to Weight: Axial, points 6.9
7.1
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 10
13 to 17
Strength to Weight: Bending, points 12
14 to 17
Thermal Diffusivity, mm2/s 23
36
Thermal Shock Resistance, points 12
13 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Copper (Cu), % 86 to 89
63 to 66
Iron (Fe), % 0 to 0.2
0.1 to 1.0
Lead (Pb), % 0 to 0.3
1.0 to 2.0
Nickel (Ni), % 0 to 1.0
0.1 to 0.5
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
1.2 to 2.0
Zinc (Zn), % 1.0 to 3.0
28.1 to 34.6
Residuals, % 0
0 to 0.4