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R05240 Alloy vs. Grade 31 Titanium

R05240 alloy belongs to the otherwise unclassified metals classification, while grade 31 titanium belongs to the titanium alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, 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 31 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
110
Elongation at Break, % 25
20
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 57
41
Tensile Strength: Ultimate (UTS), MPa 270
510
Tensile Strength: Yield (Proof), MPa 170
450

Thermal Properties

Latent Heat of Fusion, J/g 210
420
Specific Heat Capacity, J/kg-K 190
540
Thermal Expansion, µm/m-K 6.8
8.7

Otherwise Unclassified Properties

Density, g/cm3 14
4.5
Embodied Water, L/kg 460
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
99
Resilience: Unit (Modulus of Resilience), kJ/m3 90
940
Stiffness to Weight: Axial, points 6.3
13
Stiffness to Weight: Bending, points 13
35
Strength to Weight: Axial, points 5.4
32
Strength to Weight: Bending, points 6.8
32
Thermal Shock Resistance, points 18
39

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.080
Cobalt (Co), % 0
0.2 to 0.8
Hydrogen (H), % 0 to 0.0015
0 to 0.015
Iron (Fe), % 0 to 0.010
0 to 0.3
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.010
0
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0 to 0.050
Oxygen (O), % 0 to 0.020
0 to 0.35
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
97.9 to 99.76
Tungsten (W), % 0 to 0.050
0
Residuals, % 0
0 to 0.4