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C84400 Valve Metal vs. CC496K Bronze

Both C84400 valve metal and CC496K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 87% 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 CC496K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
97
Elongation at Break, % 19
8.6
Poisson's Ratio 0.34
0.35
Shear Modulus, GPa 39
36
Tensile Strength: Ultimate (UTS), MPa 230
210
Tensile Strength: Yield (Proof), MPa 110
99

Thermal Properties

Latent Heat of Fusion, J/g 180
170
Maximum Temperature: Mechanical, °C 160
140
Melting Completion (Liquidus), °C 1000
900
Melting Onset (Solidus), °C 840
820
Specific Heat Capacity, J/kg-K 370
340
Thermal Conductivity, W/m-K 72
52
Thermal Expansion, µm/m-K 19
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
11
Electrical Conductivity: Equal Weight (Specific), % IACS 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 29
31
Density, g/cm3 8.8
9.2
Embodied Carbon, kg CO2/kg material 2.8
3.3
Embodied Energy, MJ/kg 46
52
Embodied Water, L/kg 340
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
15
Resilience: Unit (Modulus of Resilience), kJ/m3 58
50
Stiffness to Weight: Axial, points 6.6
5.9
Stiffness to Weight: Bending, points 18
17
Strength to Weight: Axial, points 7.2
6.5
Strength to Weight: Bending, points 9.4
8.6
Thermal Diffusivity, mm2/s 22
17
Thermal Shock Resistance, points 8.3
8.1

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.010
Antimony (Sb), % 0 to 0.25
0 to 0.5
Copper (Cu), % 78 to 82
72 to 79.5
Iron (Fe), % 0 to 0.4
0 to 0.25
Lead (Pb), % 6.0 to 8.0
13 to 17
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0 to 1.0
0.5 to 2.0
Phosphorus (P), % 0 to 1.5
0 to 0.1
Silicon (Si), % 0 to 0.0050
0 to 0.010
Sulfur (S), % 0 to 0.080
0 to 0.1
Tin (Sn), % 2.3 to 3.5
6.0 to 8.0
Zinc (Zn), % 7.0 to 10
0 to 2.0
Residuals, % 0 to 0.7
0