R04295 Alloy vs. K93500 Alloy

R04295 alloy belongs to the otherwise unclassified metals classification, while K93500 alloy belongs to the iron alloys. There are 14 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R04295 alloy and the bottom bar is K93500 alloy.

UNS R04295 Niobium-Hafnium Alloy UNS K93500 Low Expansion Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.38
Poisson's Ratio		0.3

Shear Modulus, GPa		37
Shear Modulus, GPa		72

Tensile Strength: Ultimate (UTS), MPa		410
Tensile Strength: Ultimate (UTS), MPa		490 to 810

Thermal Properties

Latent Heat of Fusion, J/g		300
Latent Heat of Fusion, J/g		270

Specific Heat Capacity, J/kg-K		260
Specific Heat Capacity, J/kg-K		460

Thermal Expansion, µm/m-K		7.2
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		9.0
Density, g/cm³		8.2

Embodied Water, L/kg		950
Embodied Water, L/kg		130

Common Calculations

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

Stiffness to Weight: Bending, points		17
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		13
Strength to Weight: Axial, points		17 to 27

Strength to Weight: Bending, points		14
Strength to Weight: Bending, points		17 to 23

Thermal Shock Resistance, points		40
Thermal Shock Resistance, points		15 to 25

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.1

Carbon (C), %		0 to 0.015
Carbon (C), %		0 to 0.050

Chromium (Cr), %		0
Chromium (Cr), %		0 to 0.25

Cobalt (Co), %		0
Cobalt (Co), %		5.0

Hafnium (Hf), %		9.0 to 11
Hafnium (Hf), %		0

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

Iron (Fe), %		0
Iron (Fe), %		61.4 to 63

Magnesium (Mg), %		0
Magnesium (Mg), %		0 to 0.1

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.6

Nickel (Ni), %		0
Nickel (Ni), %		32

Niobium (Nb), %		85.9 to 90.3
Niobium (Nb), %		0

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

Oxygen (O), %		0 to 0.025
Oxygen (O), %		0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.015

Silicon (Si), %		0
Silicon (Si), %		0 to 0.25

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

Tantalum (Ta), %		0 to 0.5
Tantalum (Ta), %		0

Titanium (Ti), %		0.7 to 1.3
Titanium (Ti), %		0 to 0.1

Tungsten (W), %		0 to 0.5
Tungsten (W), %		0

Zirconium (Zr), %		0 to 0.7
Zirconium (Zr), %		0 to 0.1