S45503 Stainless Steel vs. R05240 Alloy

S45503 stainless steel belongs to the iron alloys classification, while R05240 alloy belongs to the otherwise unclassified metals. There are 17 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 S45503 stainless steel and the bottom bar is R05240 alloy.

UNS S45503 Stainless Steel UNS R05240 Tantalum-Niobium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		4.6 to 6.8
Elongation at Break, %		25

Poisson's Ratio		0.28
Poisson's Ratio		0.36

Shear Modulus, GPa		75
Shear Modulus, GPa		57

Tensile Strength: Ultimate (UTS), MPa		1610 to 1850
Tensile Strength: Ultimate (UTS), MPa		270

Tensile Strength: Yield (Proof), MPa		1430 to 1700
Tensile Strength: Yield (Proof), MPa		170

Thermal Properties

Latent Heat of Fusion, J/g		270
Latent Heat of Fusion, J/g		210

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

Thermal Expansion, µm/m-K		11
Thermal Expansion, µm/m-K		6.8

Otherwise Unclassified Properties

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

Embodied Water, L/kg		120
Embodied Water, L/kg		460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		82 to 110
Resilience: Ultimate (Unit Rupture Work), MJ/m³		59

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		6.3

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

Strength to Weight: Axial, points		57 to 65
Strength to Weight: Axial, points		5.4

Strength to Weight: Bending, points		39 to 43
Strength to Weight: Bending, points		6.8

Thermal Shock Resistance, points		56 to 64
Thermal Shock Resistance, points		18

Alloy Composition

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

Chromium (Cr), %		11 to 12.5
Chromium (Cr), %		0

Copper (Cu), %		1.5 to 2.5
Copper (Cu), %		0

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

Iron (Fe), %		72.4 to 78.9
Iron (Fe), %		0 to 0.010

Manganese (Mn), %		0 to 0.5
Manganese (Mn), %		0

Molybdenum (Mo), %		0 to 0.5
Molybdenum (Mo), %		0 to 0.020

Nickel (Ni), %		7.5 to 9.5
Nickel (Ni), %		0 to 0.010

Niobium (Nb), %		0.1 to 0.5
Niobium (Nb), %		35 to 42

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

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

Phosphorus (P), %		0 to 0.010
Phosphorus (P), %		0

Silicon (Si), %		0 to 0.2
Silicon (Si), %		0 to 0.0050

Sulfur (S), %		0 to 0.010
Sulfur (S), %		0

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

Titanium (Ti), %		1.0 to 1.4
Titanium (Ti), %		0 to 0.010

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