S43940 Stainless Steel vs. R60901 Alloy

S43940 stainless steel belongs to the iron alloys classification, while R60901 alloy belongs to the otherwise unclassified metals. There are 20 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 S43940 stainless steel and the bottom bar is R60901 alloy.

UNS S43940 Stainless Steel UNS R60901 Zirconium-Niobium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		98

Elongation at Break, %		21
Elongation at Break, %		17 to 22

Poisson's Ratio		0.28
Poisson's Ratio		0.34

Shear Modulus, GPa		77
Shear Modulus, GPa		37

Tensile Strength: Ultimate (UTS), MPa		490
Tensile Strength: Ultimate (UTS), MPa		500 to 580

Tensile Strength: Yield (Proof), MPa		280
Tensile Strength: Yield (Proof), MPa		350 to 390

Thermal Properties

Latent Heat of Fusion, J/g		280
Latent Heat of Fusion, J/g		250

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		270

Thermal Conductivity, W/m-K		25
Thermal Conductivity, W/m-K		17

Thermal Expansion, µm/m-K		10
Thermal Expansion, µm/m-K		6.3

Otherwise Unclassified Properties

Density, g/cm³		7.7
Density, g/cm³		6.6

Embodied Water, L/kg		120
Embodied Water, L/kg		270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		86
Resilience: Ultimate (Unit Rupture Work), MJ/m³		88 to 100

Resilience: Unit (Modulus of Resilience), kJ/m³		200
Resilience: Unit (Modulus of Resilience), kJ/m³		640 to 760

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		8.3

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		18
Strength to Weight: Axial, points		21 to 25

Strength to Weight: Bending, points		18
Strength to Weight: Bending, points		21 to 24

Thermal Diffusivity, mm²/s		6.8
Thermal Diffusivity, mm²/s		9.7

Thermal Shock Resistance, points		18
Thermal Shock Resistance, points		58 to 67

Alloy Composition

Carbon (C), %		0 to 0.030
Carbon (C), %		0

Chromium (Cr), %		17.5 to 18.5
Chromium (Cr), %		0

Iron (Fe), %		78.2 to 82.1
Iron (Fe), %		0

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0

Niobium (Nb), %		0.3 to 0.6
Niobium (Nb), %		2.4 to 2.8

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0

Sulfur (S), %		0 to 0.015
Sulfur (S), %		0

Titanium (Ti), %		0.1 to 0.6
Titanium (Ti), %		0

Zirconium (Zr), %		0
Zirconium (Zr), %		96.8 to 97.5

Residuals, %		0
Residuals, %		0 to 0.29