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C99700 Brass vs. C68100 Brass

Both C99700 brass and C68100 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 81% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C99700 brass and the bottom bar is C68100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
100
Elongation at Break, % 25
29
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 46
40
Tensile Strength: Ultimate (UTS), MPa 380
380
Tensile Strength: Yield (Proof), MPa 170
140

Thermal Properties

Latent Heat of Fusion, J/g 200
170
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 900
890
Melting Onset (Solidus), °C 880
870
Specific Heat Capacity, J/kg-K 410
390
Thermal Expansion, µm/m-K 20
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
24
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
27

Otherwise Unclassified Properties

Base Metal Price, % relative 25
23
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 3.3
2.8
Embodied Energy, MJ/kg 53
47
Embodied Water, L/kg 320
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
86
Resilience: Unit (Modulus of Resilience), kJ/m3 120
94
Stiffness to Weight: Axial, points 8.3
7.3
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 13
13
Strength to Weight: Bending, points 14
15
Thermal Shock Resistance, points 11
13

Alloy Composition

Aluminum (Al), % 0.5 to 3.0
0 to 0.010
Copper (Cu), % 54 to 65.5
56 to 60
Iron (Fe), % 0 to 1.0
0.25 to 1.3
Lead (Pb), % 0 to 2.0
0 to 0.050
Manganese (Mn), % 11 to 15
0.010 to 0.5
Nickel (Ni), % 4.0 to 6.0
0
Silicon (Si), % 0
0.040 to 0.15
Tin (Sn), % 0 to 1.0
0.75 to 1.1
Zinc (Zn), % 19 to 25
36.4 to 43
Residuals, % 0
0 to 0.5