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C85700 Brass vs. C85200 Brass

Both C85700 brass and C85200 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 88% of their average alloy composition in common.

For each property being compared, the top bar is C85700 brass and the bottom bar is C85200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 17
28
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 310
270
Tensile Strength: Yield (Proof), MPa 110
95

Thermal Properties

Latent Heat of Fusion, J/g 170
180
Maximum Temperature: Mechanical, °C 120
140
Melting Completion (Liquidus), °C 940
940
Melting Onset (Solidus), °C 910
930
Specific Heat Capacity, J/kg-K 380
380
Thermal Conductivity, W/m-K 84
84
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
18
Electrical Conductivity: Equal Weight (Specific), % IACS 25
19

Otherwise Unclassified Properties

Base Metal Price, % relative 24
26
Density, g/cm3 8.0
8.4
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 47
46
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
59
Resilience: Unit (Modulus of Resilience), kJ/m3 59
42
Stiffness to Weight: Axial, points 7.2
7.0
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 11
8.9
Strength to Weight: Bending, points 13
11
Thermal Diffusivity, mm2/s 27
27
Thermal Shock Resistance, points 10
9.3

Alloy Composition


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Aluminum (Al), % 0 to 0.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 58 to 64
70 to 74
Iron (Fe), % 0 to 0.7
0 to 0.6
Lead (Pb), % 0.8 to 1.5
1.5 to 3.8
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0.5 to 1.5
0.7 to 2.0
Zinc (Zn), % 32 to 40
20 to 27
Residuals, % 0 to 1.3
0 to 0.9