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C85400 Brass vs. C85900 Brass

Both C85400 brass and C85900 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is C85400 brass and the bottom bar is C85900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
85
Elastic (Young's, Tensile) Modulus, GPa 100
100
Elongation at Break, % 23
30
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 220
460
Tensile Strength: Yield (Proof), MPa 85
190

Thermal Properties

Latent Heat of Fusion, J/g 180
170
Maximum Temperature: Mechanical, °C 130
130
Melting Completion (Liquidus), °C 940
830
Melting Onset (Solidus), °C 940
790
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 89
89
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
25
Electrical Conductivity: Equal Weight (Specific), % IACS 22
28

Otherwise Unclassified Properties

Base Metal Price, % relative 25
24
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 2.8
2.9
Embodied Energy, MJ/kg 46
49
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
110
Resilience: Unit (Modulus of Resilience), kJ/m3 35
170
Stiffness to Weight: Axial, points 7.0
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 7.5
16
Strength to Weight: Bending, points 9.9
17
Thermal Diffusivity, mm2/s 28
29
Thermal Shock Resistance, points 7.6
16

Alloy Composition


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Aluminum (Al), % 0 to 0.35
0.1 to 0.6
Antimony (Sb), % 0
0 to 0.2
Boron (B), % 0
0 to 0.2
Copper (Cu), % 65 to 70
58 to 62
Iron (Fe), % 0 to 0.7
0 to 0.5
Lead (Pb), % 1.5 to 3.8
0 to 0.090
Manganese (Mn), % 0
0 to 0.010
Nickel (Ni), % 0 to 1.0
0 to 1.5
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.050
0 to 0.25
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 0.5 to 1.5
0 to 1.5
Zinc (Zn), % 24 to 32
31 to 41
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0 to 1.1
0 to 0.7