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C85400 Brass vs. C84000 Brass

Both C85400 brass and C84000 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 79% of their average alloy composition in common.

For each property being compared, the top bar is C85400 brass and the bottom bar is C84000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
65
Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 23
27
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 220
250
Tensile Strength: Yield (Proof), MPa 85
140

Thermal Properties

Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 940
1040
Melting Onset (Solidus), °C 940
940
Specific Heat Capacity, J/kg-K 380
380
Thermal Conductivity, W/m-K 89
72
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
16
Electrical Conductivity: Equal Weight (Specific), % IACS 22
17

Otherwise Unclassified Properties

Base Metal Price, % relative 25
30
Density, g/cm3 8.3
8.6
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 46
49
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
58
Resilience: Unit (Modulus of Resilience), kJ/m3 35
83
Stiffness to Weight: Axial, points 7.0
7.2
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 7.5
8.2
Strength to Weight: Bending, points 9.9
10
Thermal Diffusivity, mm2/s 28
22
Thermal Shock Resistance, points 7.6
9.0

Alloy Composition


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Aluminum (Al), % 0 to 0.35
0 to 0.0050
Antimony (Sb), % 0
0 to 0.020
Boron (B), % 0
0 to 0.1
Copper (Cu), % 65 to 70
82 to 89
Iron (Fe), % 0 to 0.7
0 to 0.4
Lead (Pb), % 1.5 to 3.8
0 to 0.090
Manganese (Mn), % 0
0 to 0.010
Nickel (Ni), % 0 to 1.0
0.5 to 2.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.050
0 to 0.0050
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 0.5 to 1.5
2.0 to 4.0
Zinc (Zn), % 24 to 32
5.0 to 14
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0 to 1.1
0 to 0.7