UNS R60901 Zirconium-Niobium Alloy
R60901 alloy is a zirconium alloy. It has a moderately low thermal conductivity among the zirconium alloys in the database.
The properties of R60901 alloy include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare R60901 alloy to: zirconium alloys (top), all alloys in the same category (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
98 GPa 14 x 106 psi
Elongation at Break
17 to 22 %
Poisson's Ratio
0.34
Shear Modulus
37 GPa 5.3 x 106 psi
Tensile Strength: Ultimate (UTS)
500 to 580 MPa 73 to 84 x 103 psi
Tensile Strength: Yield (Proof)
350 to 390 MPa 51 to 56 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Specific Heat Capacity
270 J/kg-K 0.064 BTU/lb-°F
Thermal Conductivity
17 W/m-K 9.9 BTU/h-ft-°F
Thermal Expansion
6.3 µm/m-K
Otherwise Unclassified Properties
Density
6.6 g/cm3 410 lb/ft3
Embodied Water
270 L/kg 32 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
88 to 100 MJ/m3
Resilience: Unit (Modulus of Resilience)
640 to 760 kJ/m3
Stiffness to Weight: Axial
8.3 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
21 to 25 points
Strength to Weight: Bending
21 to 24 points
Thermal Diffusivity
9.7 mm2/s
Thermal Shock Resistance
58 to 67 points
Alloy Composition
| Zr | 96.8 to 97.5 | |
| Nb | 2.4 to 2.8 | |
| res. | 0 to 0.29 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B352: Standard Specification for Zirconium and Zirconium Alloy Sheet, Strip, and Plate for Nuclear Application
ASTM B353: Standard Specification for Wrought Zirconium and Zirconium Alloy Seamless and Welded Tubes for Nuclear Service (Except Nuclear Fuel Cladding)
Extractive Metallurgy of Niobium, C. K. Gupta and A. K. Suri, 1993
Sintering of Advanced Materials: Fundamentals and Processes, Zhigang Zak Fang (editor), 2010