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Rulon Bearings

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Zr-2.5Nb Zirconium Alloy, Nuclear Grade
Categories: Metal; Nonferrous Metal; Zirconium Alloy

Material Notes: Characteristics:
  • Higher strength than Zircaloys
  • High corrosion resistance to super-heated water, yet lower than the Zircaloys
  • Forms a stable, dense, self-healing oxide layer
  • Highly anisotropic

Applications: Pressure tubes in heavy water reactors

Machining Parameters: Use slow speeds, heavy feeds and flood cooling with a water-soluble oil lubricant.

Key Words: UNS R60901, UNS R60902
Vendors: Eagle Alloys Corporation is a leading supplier of quality metals and alloys. Our staff prides itself on working fast, efficiently and courteously to get you the information you need. Call (800) 237-9012 or visit www.EagleAlloys.com.

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Physical PropertiesOriginal ValueComments
Density 6.44 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Vickers 150 - 500
Tensile Strength, Ultimate >= 448 MPa
Tensile Strength, Yield >= 310 MPa
@Strain 0.2 %
Elongation at Break 20 %in 50 mm
Modulus of Elasticity 97.9 GPa
Poissons Ratio 0.33
Shear Modulus 34.5 GPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000550 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 6.30 µm/m-°C
@Temperature 25.0 °C
Specific Heat Capacity 0.285 J/g-°C
Thermal Conductivity 17.1 W/m-K
Melting Point 1840 °C
Boiling Point 4380 °C
 
Component Elements PropertiesOriginal ValueComments
Niobium, Nb (Columbium, Cb) 2.6 %
Oxygen, O 0.14 %
Zirconium, Zr 97.5 %
 
Descriptive Properties
Alpha plus Beta Phase Crystal Structurehcp + bcc954°C
Beta Phase Crystal Structurebcc> 854°C

References for this datasheet.

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MZRN30 / 14577

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