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R05240 Alloy vs. ACI-ASTM CA15 Steel

R05240 alloy belongs to the otherwise unclassified metals classification, while ACI-ASTM CA15 steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is R05240 alloy and the bottom bar is ACI-ASTM CA15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
190
Elongation at Break, % 25
21
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 57
76
Tensile Strength: Ultimate (UTS), MPa 270
700
Tensile Strength: Yield (Proof), MPa 170
570

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Specific Heat Capacity, J/kg-K 190
480
Thermal Expansion, µm/m-K 6.8
10

Otherwise Unclassified Properties

Density, g/cm3 14
7.7
Embodied Water, L/kg 460
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
140
Resilience: Unit (Modulus of Resilience), kJ/m3 90
820
Stiffness to Weight: Axial, points 6.3
14
Stiffness to Weight: Bending, points 13
25
Strength to Weight: Axial, points 5.4
25
Strength to Weight: Bending, points 6.8
23
Thermal Shock Resistance, points 18
26

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.15
Chromium (Cr), % 0
11.5 to 14
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
81.8 to 88.5
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 0.020
0 to 0.5
Nickel (Ni), % 0 to 0.010
0 to 1.0
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.020
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.0050
0 to 1.5
Sulfur (S), % 0
0 to 0.040
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
0