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C85500 Brass vs. C87900 Brass

Both C85500 brass and C87900 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 94% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C85500 brass and the bottom bar is C87900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 40
25
Poisson's Ratio 0.31
0.31
Rockwell B Hardness 55
70
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 410
480
Tensile Strength: Yield (Proof), MPa 160
240

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 120
130
Melting Completion (Liquidus), °C 900
930
Melting Onset (Solidus), °C 890
900
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
15
Electrical Conductivity: Equal Weight (Specific), % IACS 29
17

Otherwise Unclassified Properties

Base Metal Price, % relative 23
24
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 2.7
2.7
Embodied Energy, MJ/kg 46
46
Embodied Water, L/kg 320
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
100
Resilience: Unit (Modulus of Resilience), kJ/m3 120
270
Stiffness to Weight: Axial, points 7.3
7.3
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 14
17
Strength to Weight: Bending, points 15
17
Thermal Diffusivity, mm2/s 38
37
Thermal Shock Resistance, points 14
16

Alloy Composition


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Aluminum (Al), % 0
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Copper (Cu), % 59 to 63
63 to 69.2
Iron (Fe), % 0 to 0.2
0 to 0.4
Lead (Pb), % 0 to 0.2
0 to 0.25
Manganese (Mn), % 0 to 0.2
0 to 0.15
Nickel (Ni), % 0 to 0.2
0 to 0.5
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0.8 to 1.2
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.2
0 to 0.25
Zinc (Zn), % 35.1 to 41
30 to 36
Residuals, % 0 to 0.9
0