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C85700 Brass vs. C99700 Brass

Both C85700 brass and C99700 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 85% of their average alloy composition in common. There are 26 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 C85700 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, % 17
25
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 40
46
Tensile Strength: Ultimate (UTS), MPa 310
380
Tensile Strength: Yield (Proof), MPa 110
170

Thermal Properties

Latent Heat of Fusion, J/g 170
200
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 940
900
Melting Onset (Solidus), °C 910
880
Specific Heat Capacity, J/kg-K 380
410
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 25
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 24
25
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 2.8
3.3
Embodied Energy, MJ/kg 47
53
Embodied Water, L/kg 330
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
78
Resilience: Unit (Modulus of Resilience), kJ/m3 59
120
Stiffness to Weight: Axial, points 7.2
8.3
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 11
13
Strength to Weight: Bending, points 13
14
Thermal Shock Resistance, points 10
11

Alloy Composition

Aluminum (Al), % 0 to 0.8
0.5 to 3.0
Copper (Cu), % 58 to 64
54 to 65.5
Iron (Fe), % 0 to 0.7
0 to 1.0
Lead (Pb), % 0.8 to 1.5
0 to 2.0
Manganese (Mn), % 0
11 to 15
Nickel (Ni), % 0 to 1.0
4.0 to 6.0
Silicon (Si), % 0 to 0.050
0
Tin (Sn), % 0.5 to 1.5
0 to 1.0
Zinc (Zn), % 32 to 40
19 to 25
Residuals, % 0
0 to 0.3