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C18700 Copper vs. C99400 Brass

Both C18700 copper and C99400 brass are copper alloys. They have a moderately high 90% of their average alloy composition in common. There are 24 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 C18700 copper and the bottom bar is C99400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
44
Tensile Strength: Ultimate (UTS), MPa 290 to 330
460 to 550
Tensile Strength: Yield (Proof), MPa 230 to 250
230 to 370

Thermal Properties

Latent Heat of Fusion, J/g 210
230
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 1080
1070
Melting Onset (Solidus), °C 950
1020
Specific Heat Capacity, J/kg-K 380
400
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
17
Electrical Conductivity: Equal Weight (Specific), % IACS 99
17

Otherwise Unclassified Properties

Base Metal Price, % relative 30
30
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 41
45
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
230 to 590
Stiffness to Weight: Axial, points 7.1
7.5
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.0 to 10
15 to 17
Strength to Weight: Bending, points 11 to 12
15 to 17
Thermal Shock Resistance, points 10 to 12
16 to 19

Alloy Composition

Aluminum (Al), % 0
0.5 to 2.0
Copper (Cu), % 98 to 99.2
83.5 to 96.5
Iron (Fe), % 0
1.0 to 3.0
Lead (Pb), % 0.8 to 1.5
0 to 0.25
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
1.0 to 3.5
Silicon (Si), % 0
0.5 to 2.0
Zinc (Zn), % 0
0.5 to 5.0
Residuals, % 0
0 to 0.3