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C85900 Brass vs. C84000 Brass

Both C85900 brass and C84000 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 72% of their average alloy composition in common.

For each property being compared, the top bar is C85900 brass and the bottom bar is C84000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
65
Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 30
27
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 460
250
Tensile Strength: Yield (Proof), MPa 190
140

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 830
1040
Melting Onset (Solidus), °C 790
940
Specific Heat Capacity, J/kg-K 390
380
Thermal Conductivity, W/m-K 89
72
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
16
Electrical Conductivity: Equal Weight (Specific), % IACS 28
17

Otherwise Unclassified Properties

Base Metal Price, % relative 24
30
Density, g/cm3 8.0
8.6
Embodied Carbon, kg CO2/kg material 2.9
3.0
Embodied Energy, MJ/kg 49
49
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
58
Resilience: Unit (Modulus of Resilience), kJ/m3 170
83
Stiffness to Weight: Axial, points 7.3
7.2
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 16
8.2
Strength to Weight: Bending, points 17
10
Thermal Diffusivity, mm2/s 29
22
Thermal Shock Resistance, points 16
9.0

Alloy Composition

Aluminum (Al), % 0.1 to 0.6
0 to 0.0050
Antimony (Sb), % 0 to 0.2
0 to 0.020
Boron (B), % 0 to 0.2
0 to 0.1
Copper (Cu), % 58 to 62
82 to 89
Iron (Fe), % 0 to 0.5
0 to 0.4
Lead (Pb), % 0 to 0.090
0 to 0.090
Manganese (Mn), % 0 to 0.010
0 to 0.010
Nickel (Ni), % 0 to 1.5
0.5 to 2.0
Phosphorus (P), % 0 to 0.010
0 to 0.050
Silicon (Si), % 0 to 0.25
0 to 0.0050
Sulfur (S), % 0.1 to 0.65
0.1 to 0.65
Tin (Sn), % 0 to 1.5
2.0 to 4.0
Zinc (Zn), % 31 to 41
5.0 to 14
Zirconium (Zr), % 0 to 0.2
0 to 0.1
Residuals, % 0
0 to 0.7