R60705 Alloy vs. SAE-AISI A9 Steel

R60705 alloy belongs to the otherwise unclassified metals classification, while SAE-AISI A9 steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is R60705 alloy and the bottom bar is SAE-AISI A9 steel.

UNS R60705 Zirconium-Niobium Alloy SAE-AISI A9 (T30109) Air-Hardening Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		98
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.34
Poisson's Ratio		0.29

Shear Modulus, GPa		37
Shear Modulus, GPa		74

Tensile Strength: Ultimate (UTS), MPa		540
Tensile Strength: Ultimate (UTS), MPa		770 to 2030

Thermal Properties

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

Specific Heat Capacity, J/kg-K		270
Specific Heat Capacity, J/kg-K		470

Thermal Conductivity, W/m-K		17
Thermal Conductivity, W/m-K		35

Thermal Expansion, µm/m-K		6.3
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		6.7
Density, g/cm³		7.8

Embodied Water, L/kg		450
Embodied Water, L/kg		82

Common Calculations

Stiffness to Weight: Axial, points		8.1
Stiffness to Weight: Axial, points		14

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

Strength to Weight: Axial, points		22
Strength to Weight: Axial, points		28 to 73

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		24 to 46

Thermal Diffusivity, mm²/s		9.5
Thermal Diffusivity, mm²/s		9.6

Thermal Shock Resistance, points		63
Thermal Shock Resistance, points		25 to 66

Alloy Composition

Carbon (C), %		0 to 0.050
Carbon (C), %		0.45 to 0.55

Chromium (Cr), %		0 to 0.2
Chromium (Cr), %		4.8 to 5.5

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Hafnium (Hf), %		0 to 4.5
Hafnium (Hf), %		0

Hydrogen (H), %		0 to 0.0050
Hydrogen (H), %		0

Iron (Fe), %		0 to 0.2
Iron (Fe), %		87 to 90.5

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

Molybdenum (Mo), %		0
Molybdenum (Mo), %		1.3 to 1.8

Nickel (Ni), %		0
Nickel (Ni), %		1.3 to 1.8

Niobium (Nb), %		2.0 to 3.0
Niobium (Nb), %		0

Nitrogen (N), %		0 to 0.025
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.18
Oxygen (O), %		0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0
Silicon (Si), %		1.0 to 1.2

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

Vanadium (V), %		0
Vanadium (V), %		0.8 to 1.4

Zirconium (Zr), %		91 to 98
Zirconium (Zr), %		0