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R05240 Alloy vs. EN 1.7378 Steel

R05240 alloy belongs to the otherwise unclassified metals classification, while EN 1.7378 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 EN 1.7378 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
190
Elongation at Break, % 25
17
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 57
74
Tensile Strength: Ultimate (UTS), MPa 270
700
Tensile Strength: Yield (Proof), MPa 170
490

Thermal Properties

Latent Heat of Fusion, J/g 210
260
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
61

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
110
Resilience: Unit (Modulus of Resilience), kJ/m3 90
630
Stiffness to Weight: Axial, points 6.3
13
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 5.4
25
Strength to Weight: Bending, points 6.8
22
Thermal Shock Resistance, points 18
20

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0015 to 0.0070
Carbon (C), % 0 to 0.010
0.050 to 0.1
Chromium (Cr), % 0
2.2 to 2.6
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
94.6 to 96.1
Manganese (Mn), % 0
0.3 to 0.7
Molybdenum (Mo), % 0 to 0.020
0.9 to 1.1
Nickel (Ni), % 0 to 0.010
0
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0 to 0.010
Oxygen (O), % 0 to 0.020
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.0050
0.15 to 0.45
Sulfur (S), % 0
0 to 0.010
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
0.050 to 0.1
Tungsten (W), % 0 to 0.050
0
Vanadium (V), % 0
0.2 to 0.3