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Ensinger PEI

Niobium C-103 (WC 103; 89Nb-10Hf-1Ti), Recrystallized
Categories: Metal; Nonferrous Metal; Niobium Alloy; Refractory Metal

Key Words: Columbium Alloy
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Physical PropertiesMetricEnglishComments
Density 8.87 g/cc0.320 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 219219Estimated from Vickers
Hardness, Knoop 243243Estimated from Vickers
Hardness, Rockwell B 9797Estimated from Vickers
Hardness, Rockwell C 1818Estimated from Vickers
Hardness, Vickers 230230Typical for Cb-103; Heat Treatment Unknown
Tensile Strength 186 MPa
@Temperature 1090 °C
27000 psi
@Temperature 2000 °F
Tensile Strength, Ultimate 405 MPa58700 psi
 185 MPa
@Temperature 1093 °C
26800 psi
@Temperature 1999 °F
Tensile Strength, Yield 345 MPa50000 psi
Elongation at Break 26 %26 %in 50 mm
Modulus of Elasticity 87.0 GPa12600 ksi
 
Thermal PropertiesMetricEnglishComments
CTE, linear 8.10 µm/m-°C
@Temperature 20.0 - 1205 °C
4.50 µin/in-°F
@Temperature 68.0 - 2201 °F
Specific Heat Capacity 0.340 J/g-°C0.0813 BTU/lb-°F
Thermal Conductivity 41.9 W/m-K291 BTU-in/hr-ft²-°F
Melting Point <= 2350 °C<= 4260 °F
Liquidus 2350 °C4260 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.010 %<= 0.010 %
Hafnium, Hf 9.0 - 11 %9.0 - 11 %
Hydrogen, H <= 0.0020 %<= 0.0020 %
Niobium, Nb (Columbium, Cb) 89 %89 %
Nitrogen, N <= 0.030 %<= 0.030 %
Oxygen, O <= 0.030 %<= 0.030 %
Tantalum, Ta <= 0.50 %<= 0.50 %
Titanium, Ti 0.70 - 1.3 %0.70 - 1.3 %
Tungsten, W <= 0.50 %<= 0.50 %
Zirconium, Zr <= 0.70 %<= 0.70 %

References for this datasheet.

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