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C84200 Brass vs. C85200 Brass

Both C84200 brass and C85200 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is C84200 brass and the bottom bar is C85200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 15
28
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 250
270
Tensile Strength: Yield (Proof), MPa 120
95

Thermal Properties

Latent Heat of Fusion, J/g 180
180
Maximum Temperature: Mechanical, °C 150
140
Melting Completion (Liquidus), °C 990
940
Melting Onset (Solidus), °C 840
930
Specific Heat Capacity, J/kg-K 370
380
Thermal Conductivity, W/m-K 72
84
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
18
Electrical Conductivity: Equal Weight (Specific), % IACS 17
19

Otherwise Unclassified Properties

Base Metal Price, % relative 30
26
Density, g/cm3 8.5
8.4
Embodied Carbon, kg CO2/kg material 3.1
2.8
Embodied Energy, MJ/kg 51
46
Embodied Water, L/kg 350
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
59
Resilience: Unit (Modulus of Resilience), kJ/m3 72
42
Stiffness to Weight: Axial, points 6.9
7.0
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.2
8.9
Strength to Weight: Bending, points 10
11
Thermal Diffusivity, mm2/s 23
27
Thermal Shock Resistance, points 9.1
9.3

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.25
0 to 0.2
Copper (Cu), % 78 to 82
70 to 74
Iron (Fe), % 0 to 0.4
0 to 0.6
Lead (Pb), % 2.0 to 3.0
1.5 to 3.8
Nickel (Ni), % 0 to 0.8
0 to 1.0
Phosphorus (P), % 0 to 1.5
0 to 0.020
Silicon (Si), % 0 to 0.0050
0 to 0.050
Sulfur (S), % 0 to 0.080
0 to 0.050
Tin (Sn), % 4.0 to 6.0
0.7 to 2.0
Zinc (Zn), % 10 to 16
20 to 27
Residuals, % 0 to 0.7
0 to 0.9