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C84400 Valve Metal vs. C99700 Brass

Both C84400 valve metal and C99700 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 71% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C84400 valve metal and the bottom bar is C99700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 19
25
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 39
46
Tensile Strength: Ultimate (UTS), MPa 230
380
Tensile Strength: Yield (Proof), MPa 110
170

Thermal Properties

Latent Heat of Fusion, J/g 180
200
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 1000
900
Melting Onset (Solidus), °C 840
880
Specific Heat Capacity, J/kg-K 370
410
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 29
25
Density, g/cm3 8.8
8.1
Embodied Carbon, kg CO2/kg material 2.8
3.3
Embodied Energy, MJ/kg 46
53
Embodied Water, L/kg 340
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
78
Resilience: Unit (Modulus of Resilience), kJ/m3 58
120
Stiffness to Weight: Axial, points 6.6
8.3
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 7.2
13
Strength to Weight: Bending, points 9.4
14
Thermal Shock Resistance, points 8.3
11

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0.5 to 3.0
Antimony (Sb), % 0 to 0.25
0
Copper (Cu), % 78 to 82
54 to 65.5
Iron (Fe), % 0 to 0.4
0 to 1.0
Lead (Pb), % 6.0 to 8.0
0 to 2.0
Manganese (Mn), % 0
11 to 15
Nickel (Ni), % 0 to 1.0
4.0 to 6.0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 2.3 to 3.5
0 to 1.0
Zinc (Zn), % 7.0 to 10
19 to 25
Residuals, % 0
0 to 0.3