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Grade 20 Titanium vs. C84400 Valve Metal

Grade 20 titanium belongs to the titanium alloys classification, while C84400 valve metal belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 20 titanium and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
100
Elongation at Break, % 5.7 to 17
19
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 47
39
Tensile Strength: Ultimate (UTS), MPa 900 to 1270
230
Tensile Strength: Yield (Proof), MPa 850 to 1190
110

Thermal Properties

Latent Heat of Fusion, J/g 400
180
Maximum Temperature: Mechanical, °C 370
160
Melting Completion (Liquidus), °C 1660
1000
Melting Onset (Solidus), °C 1600
840
Specific Heat Capacity, J/kg-K 520
370
Thermal Expansion, µm/m-K 9.6
19

Otherwise Unclassified Properties

Density, g/cm3 5.0
8.8
Embodied Carbon, kg CO2/kg material 52
2.8
Embodied Energy, MJ/kg 860
46
Embodied Water, L/kg 350
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
36
Resilience: Unit (Modulus of Resilience), kJ/m3 2940 to 5760
58
Stiffness to Weight: Axial, points 14
6.6
Stiffness to Weight: Bending, points 33
18
Strength to Weight: Axial, points 50 to 70
7.2
Strength to Weight: Bending, points 41 to 52
9.4
Thermal Shock Resistance, points 55 to 77
8.3

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 5.5 to 6.5
0
Copper (Cu), % 0
78 to 82
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
0 to 0.4
Lead (Pb), % 0
6.0 to 8.0
Molybdenum (Mo), % 3.5 to 4.5
0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Titanium (Ti), % 71 to 77
0
Vanadium (V), % 7.5 to 8.5
0
Zinc (Zn), % 0
7.0 to 10
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0
0 to 0.7