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C47940 Brass vs. C18700 Copper

Both C47940 brass and C18700 copper are copper alloys. They have 66% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C47940 brass and the bottom bar is C18700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 14 to 34
9.0 to 9.6
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
43
Shear Strength, MPa 250 to 310
170 to 190
Tensile Strength: Ultimate (UTS), MPa 380 to 520
290 to 330
Tensile Strength: Yield (Proof), MPa 160 to 390
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 170
210
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 850
1080
Melting Onset (Solidus), °C 800
950
Specific Heat Capacity, J/kg-K 380
380
Thermal Conductivity, W/m-K 110
380
Thermal Expansion, µm/m-K 20
17

Otherwise Unclassified Properties

Base Metal Price, % relative 25
30
Density, g/cm3 8.2
9.0
Embodied Carbon, kg CO2/kg material 2.8
2.6
Embodied Energy, MJ/kg 47
41
Embodied Water, L/kg 330
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 68 to 100
24 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 740
240 to 280
Stiffness to Weight: Axial, points 7.1
7.1
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 13 to 17
9.0 to 10
Strength to Weight: Bending, points 14 to 17
11 to 12
Thermal Diffusivity, mm2/s 36
110
Thermal Shock Resistance, points 13 to 17
10 to 12

Alloy Composition

Copper (Cu), % 63 to 66
98 to 99.2
Iron (Fe), % 0.1 to 1.0
0
Lead (Pb), % 1.0 to 2.0
0.8 to 1.5
Nickel (Ni), % 0.1 to 0.5
0
Tin (Sn), % 1.2 to 2.0
0
Zinc (Zn), % 28.1 to 34.6
0
Residuals, % 0
0 to 0.5

Comparable Variants