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R05240 Alloy vs. Grade 20 Titanium

R05240 alloy belongs to the otherwise unclassified metals classification, while grade 20 titanium belongs to the titanium alloys. There are 18 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is R05240 alloy and the bottom bar is grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
120
Elongation at Break, % 25
5.7 to 17
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 57
47
Tensile Strength: Ultimate (UTS), MPa 270
900 to 1270
Tensile Strength: Yield (Proof), MPa 170
850 to 1190

Thermal Properties

Latent Heat of Fusion, J/g 210
400
Specific Heat Capacity, J/kg-K 190
520
Thermal Expansion, µm/m-K 6.8
9.6

Otherwise Unclassified Properties

Density, g/cm3 14
5.0
Embodied Water, L/kg 460
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 90
2940 to 5760
Stiffness to Weight: Axial, points 6.3
14
Stiffness to Weight: Bending, points 13
33
Strength to Weight: Axial, points 5.4
50 to 70
Strength to Weight: Bending, points 6.8
41 to 52
Thermal Shock Resistance, points 18
55 to 77

Alloy Composition

Aluminum (Al), % 0
3.0 to 4.0
Carbon (C), % 0 to 0.010
0 to 0.050
Chromium (Cr), % 0
5.5 to 6.5
Hydrogen (H), % 0 to 0.0015
0 to 0.020
Iron (Fe), % 0 to 0.010
0 to 0.3
Molybdenum (Mo), % 0 to 0.020
3.5 to 4.5
Nickel (Ni), % 0 to 0.010
0
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0 to 0.030
Oxygen (O), % 0 to 0.020
0 to 0.12
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 0 to 0.0050
0
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
71 to 77
Tungsten (W), % 0 to 0.050
0
Vanadium (V), % 0
7.5 to 8.5
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4