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Ensinger PEI

Niobium C-129Y (80Nb-10W-10Hf-0.1Y)
Categories: Metal; Nonferrous Metal; Niobium Alloy; Refractory Metal

Key Words: Columbium Alloy
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Physical PropertiesMetricEnglishComments
Density 9.50 g/cc0.343 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 209209Estimated from Vickers
Hardness, Knoop 234234Estimated from Vickers
Hardness, Rockwell B 9595Estimated from Vickers
Hardness, Rockwell C 1616Estimated from Vickers
Hardness, Vickers 220220Recrystallized
Tensile Strength 179 MPa
@Temperature 1320 °C
26000 psi
@Temperature 2400 °F
Recrystallized
Tensile Strength, Ultimate 620 MPa89900 psi
 180 MPa
@Temperature 1315 °C
26100 psi
@Temperature 2399 °F
Tensile Strength, Yield 515 MPa74700 psi
Elongation at Break 25 %25 %in 25 mm
Rupture Strength 103 MPa
@Temperature 1320 °C,
Time 36000 sec
15000 psi
@Temperature 2400 °F,
Time 10.0 hour
Recrystallized
Tensile Modulus 112 GPa16200 ksi
Machinability 75 %75 %C36000 Brass as 100%
 
Thermal PropertiesMetricEnglishComments
CTE, linear 6.88 µm/m-°C
@Temperature 20.0 - 1100 °C
3.82 µin/in-°F
@Temperature 68.0 - 2010 °F
Specific Heat Capacity 0.268 J/g-°C0.0641 BTU/lb-°F
Thermal Conductivity 69.6 W/m-K483 BTU-in/hr-ft²-°F
Melting Point <= 2400 °C<= 4350 °F
Liquidus 2400 °C4350 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.015 %<= 0.015 %
Hafnium, Hf 9.0 - 11 %9.0 - 11 %
Hydrogen, H <= 0.0015 %<= 0.0015 %
Niobium, Nb (Columbium, Cb) 80 %80 %
Nitrogen, N <= 0.015 %<= 0.015 %
Oxygen, O <= 0.025 %<= 0.025 %
Tantalum, Ta <= 0.50 %<= 0.50 %
Tungsten, W 9.0 - 11 %9.0 - 11 %
Yttrium, Y 0.050 - 0.30 %0.050 - 0.30 %
Zirconium, Zr <= 0.50 %<= 0.50 %

References for this datasheet.

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