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C84400 Valve Metal vs. C85900 Brass

Both C84400 valve metal and C85900 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 70% of their average alloy composition in common. There are 28 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 C84400 valve metal and the bottom bar is C85900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
100
Elongation at Break, % 19
30
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 39
40
Tensile Strength: Ultimate (UTS), MPa 230
460
Tensile Strength: Yield (Proof), MPa 110
190

Thermal Properties

Latent Heat of Fusion, J/g 180
170
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 1000
830
Melting Onset (Solidus), °C 840
790
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 72
89
Thermal Expansion, µm/m-K 19
20

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 29
24
Density, g/cm3 8.8
8.0
Embodied Carbon, kg CO2/kg material 2.8
2.9
Embodied Energy, MJ/kg 46
49
Embodied Water, L/kg 340
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
110
Resilience: Unit (Modulus of Resilience), kJ/m3 58
170
Stiffness to Weight: Axial, points 6.6
7.3
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 7.2
16
Strength to Weight: Bending, points 9.4
17
Thermal Diffusivity, mm2/s 22
29
Thermal Shock Resistance, points 8.3
16

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0.1 to 0.6
Antimony (Sb), % 0 to 0.25
0 to 0.2
Boron (B), % 0
0 to 0.2
Copper (Cu), % 78 to 82
58 to 62
Iron (Fe), % 0 to 0.4
0 to 0.5
Lead (Pb), % 6.0 to 8.0
0 to 0.090
Manganese (Mn), % 0
0 to 0.010
Nickel (Ni), % 0 to 1.0
0 to 1.5
Phosphorus (P), % 0 to 1.5
0 to 0.010
Silicon (Si), % 0 to 0.0050
0 to 0.25
Sulfur (S), % 0 to 0.080
0.1 to 0.65
Tin (Sn), % 2.3 to 3.5
0 to 1.5
Zinc (Zn), % 7.0 to 10
31 to 41
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.7