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R05240 Alloy vs. ASTM A369 Grade FP91

R05240 alloy belongs to the otherwise unclassified metals classification, while ASTM A369 grade FP91 belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is R05240 alloy and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
190
Elongation at Break, % 25
19
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 57
75
Tensile Strength: Ultimate (UTS), MPa 270
670
Tensile Strength: Yield (Proof), MPa 170
460

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Specific Heat Capacity, J/kg-K 190
470
Thermal Expansion, µm/m-K 6.8
13

Otherwise Unclassified Properties

Density, g/cm3 14
7.8
Embodied Water, L/kg 460
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
110
Resilience: Unit (Modulus of Resilience), kJ/m3 90
560
Stiffness to Weight: Axial, points 6.3
14
Stiffness to Weight: Bending, points 13
25
Strength to Weight: Axial, points 5.4
24
Strength to Weight: Bending, points 6.8
22
Thermal Shock Resistance, points 18
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 0 to 0.010
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
87.3 to 90.3
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.020
0.85 to 1.1
Nickel (Ni), % 0 to 0.010
0 to 0.4
Niobium (Nb), % 35 to 42
0.060 to 0.1
Nitrogen (N), % 0 to 0.010
0.030 to 0.070
Oxygen (O), % 0 to 0.020
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.0050
0.2 to 0.5
Sulfur (S), % 0
0 to 0.025
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
0 to 0.010
Tungsten (W), % 0 to 0.050
0
Vanadium (V), % 0
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010