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CC751S Brass vs. C90500 Gun Metal

Both CC751S brass and C90500 gun metal are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 68% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is CC751S brass and the bottom bar is C90500 gun metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 5.6
20
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 450
320
Tensile Strength: Yield (Proof), MPa 320
160

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 850
1000
Melting Onset (Solidus), °C 810
850
Specific Heat Capacity, J/kg-K 390
370
Thermal Conductivity, W/m-K 110
75
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
11
Electrical Conductivity: Equal Weight (Specific), % IACS 28
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
35
Density, g/cm3 8.1
8.7
Embodied Carbon, kg CO2/kg material 2.8
3.6
Embodied Energy, MJ/kg 46
59
Embodied Water, L/kg 330
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
54
Resilience: Unit (Modulus of Resilience), kJ/m3 480
110
Stiffness to Weight: Axial, points 7.2
6.9
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 15
10
Strength to Weight: Bending, points 16
12
Thermal Diffusivity, mm2/s 35
23
Thermal Shock Resistance, points 15
12

Alloy Composition


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Aluminum (Al), % 0 to 0.1
0 to 0.0050
Antimony (Sb), % 0 to 0.5
0 to 0.2
Copper (Cu), % 62.7 to 66
86 to 89
Iron (Fe), % 0.25 to 0.5
0 to 0.2
Lead (Pb), % 0.8 to 2.2
0 to 0.3
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.8
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0.65 to 1.1
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.8
9.0 to 11
Zinc (Zn), % 27.9 to 35.6
1.0 to 3.0
Residuals, % 0
0 to 0.3