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R05240 Alloy vs. ASTM B817 Type II

R05240 alloy belongs to the otherwise unclassified metals classification, while ASTM B817 type II 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 ASTM B817 type II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
100
Elongation at Break, % 25
3.0 to 13
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 57
40
Tensile Strength: Ultimate (UTS), MPa 270
900 to 960
Tensile Strength: Yield (Proof), MPa 170
780 to 900

Thermal Properties

Latent Heat of Fusion, J/g 210
400
Specific Heat Capacity, J/kg-K 190
550
Thermal Expansion, µm/m-K 6.8
9.9

Otherwise Unclassified Properties

Density, g/cm3 14
4.6
Embodied Water, L/kg 460
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
26 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 90
2890 to 3890
Stiffness to Weight: Axial, points 6.3
13
Stiffness to Weight: Bending, points 13
34
Strength to Weight: Axial, points 5.4
55 to 58
Strength to Weight: Bending, points 6.8
45 to 47
Thermal Shock Resistance, points 18
62 to 66

Alloy Composition

Aluminum (Al), % 0
5.0 to 6.0
Carbon (C), % 0 to 0.010
0 to 0.1
Chlorine (Cl), % 0
0 to 0.2
Copper (Cu), % 0
0.35 to 1.0
Hydrogen (H), % 0 to 0.0015
0 to 0.015
Iron (Fe), % 0 to 0.010
0.35 to 1.0
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 0.040
Oxygen (O), % 0 to 0.020
0 to 0.3
Silicon (Si), % 0 to 0.0050
0 to 0.1
Sodium (Na), % 0
0 to 0.2
Tantalum (Ta), % 57.9 to 65
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0 to 0.010
82.1 to 87.8
Tungsten (W), % 0 to 0.050
0
Vanadium (V), % 0
5.0 to 6.0
Residuals, % 0
0 to 0.4