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Refractory Metals

Niobium, Nb; Unalloyed CG (UNS R04210; UNS R04211)
Categories: Metal; Nonferrous Metal; Niobium Alloy; Refractory Metal; Pure Element

Material Notes: Commercial-grade unalloyed niobium

Key Words: UNS R04210; UNS R04211
Vendors: PLANSEE SE: Whether it's high temperatures, aggressive chemicals or extreme mechanical loading: PLANSEE supplies a suitable product solution in refractory metals or composite materials. As the world market leader in powder metallurgically produced high performance materials we combine outstanding materials knowledge with profound applications and technology know-how. Visit us at www.plansee.com.

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 PropertiesMetricEnglishComments
Density 8.57 g/cc0.310 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 80 - 12080 - 120
Tensile Strength, Ultimate 275 - 585 MPa39900 - 84800 psi
Tensile Strength, Yield 207 MPa
@Strain 0.2 %
30000 psi
@Strain 0.2 %
Elongation at Break 5.0 - 30 %5.0 - 30 %
Modulus of Elasticity 103 GPa14900 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000125 ohm-cm0.0000125 ohm-cm
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 0.270 J/g-°C0.0645 BTU/lb-°F
Thermal Conductivity 52.3 W/m-K363 BTU-in/hr-ft²-°F
Melting Point 2468 °C4474 °F
Boiling Point 4900 °C8850 °F
 
Component Elements PropertiesMetricEnglishComments
Niobium, Nb (Columbium, Cb) 100 %100 %impurity levels unquantified

References for this datasheet.

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