R05240 Alloy vs. EN 1.0446 Cast Steel

R05240 alloy belongs to the otherwise unclassified metals classification, while EN 1.0446 cast steel belongs to the iron 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.

For each property being compared, the top bar is R05240 alloy and the bottom bar is EN 1.0446 cast steel.

UNS R05240 Tantalum-Niobium Alloy EN 1.0446 (GE240) Cast Non-Alloy Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		150
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		25
Elongation at Break, %		25

Poisson's Ratio		0.36
Poisson's Ratio		0.29

Shear Modulus, GPa		57
Shear Modulus, GPa		73

Tensile Strength: Ultimate (UTS), MPa		270
Tensile Strength: Ultimate (UTS), MPa		530

Tensile Strength: Yield (Proof), MPa		170
Tensile Strength: Yield (Proof), MPa		270

Thermal Properties

Latent Heat of Fusion, J/g		210
Latent Heat of Fusion, J/g		250

Specific Heat Capacity, J/kg-K		190
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		6.8
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		14
Density, g/cm³		7.9

Embodied Water, L/kg		460
Embodied Water, L/kg		45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		59
Resilience: Ultimate (Unit Rupture Work), MJ/m³		110

Resilience: Unit (Modulus of Resilience), kJ/m³		90
Resilience: Unit (Modulus of Resilience), kJ/m³		190

Stiffness to Weight: Axial, points		6.3
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		13
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		5.4
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		6.8
Strength to Weight: Bending, points		18

Thermal Shock Resistance, points		18
Thermal Shock Resistance, points		17

Alloy Composition

Carbon (C), %		0 to 0.010
Carbon (C), %		0

Hydrogen (H), %		0 to 0.0015
Hydrogen (H), %		0

Iron (Fe), %		0 to 0.010
Iron (Fe), %		99.935 to 100

Molybdenum (Mo), %		0 to 0.020
Molybdenum (Mo), %		0

Nickel (Ni), %		0 to 0.010
Nickel (Ni), %		0

Niobium (Nb), %		35 to 42
Niobium (Nb), %		0

Nitrogen (N), %		0 to 0.010
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.020
Oxygen (O), %		0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.035

Silicon (Si), %		0 to 0.0050
Silicon (Si), %		0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.030

Tantalum (Ta), %		57.9 to 65
Tantalum (Ta), %		0

Titanium (Ti), %		0 to 0.010
Titanium (Ti), %		0

Tungsten (W), %		0 to 0.050
Tungsten (W), %		0