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C68000 Brass vs. C99700 Brass

Both C68000 brass and C99700 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% 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 C68000 brass and the bottom bar is C99700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 27
25
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 40
46
Tensile Strength: Ultimate (UTS), MPa 390
380
Tensile Strength: Yield (Proof), MPa 140
170

Thermal Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 23
25
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 2.8
3.3
Embodied Energy, MJ/kg 48
53
Embodied Water, L/kg 330
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82
78
Resilience: Unit (Modulus of Resilience), kJ/m3 95
120
Stiffness to Weight: Axial, points 7.3
8.3
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 14
13
Strength to Weight: Bending, points 15
14
Thermal Shock Resistance, points 13
11

Alloy Composition


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Aluminum (Al), % 0 to 0.010
0.5 to 3.0
Copper (Cu), % 56 to 60
54 to 65.5
Iron (Fe), % 0.25 to 1.3
0 to 1.0
Lead (Pb), % 0 to 0.050
0 to 2.0
Manganese (Mn), % 0.010 to 0.5
11 to 15
Nickel (Ni), % 0.2 to 0.8
4.0 to 6.0
Silicon (Si), % 0.040 to 0.15
0
Tin (Sn), % 0.75 to 1.1
0 to 1.0
Zinc (Zn), % 35.6 to 42.8
19 to 25
Residuals, % 0 to 0.5
0 to 0.3