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ALLVAR Alloy 30 Negative CTE Titanium Alloy
Categories: Metal; Nonferrous Metal; Titanium Alloy

Material Notes: A true titanium alloy, ALLVAR Alloy 30 is lightweight, corrosion resistant, non-magnetic, and machinable. ALLVAR Alloys are the only metals in the world that shrink when heated and expand when cooled. Known for their Negative Thermal Expansion (NTE) properties, ALLVAR Alloy 30’s revolutionary properties enable otherwise unachievable passive athermalization in a variety of applications. Current applications include refractive and reflective optics and constant force load fasteners.

Key Words: Negative Thermal Expansion, Optics, Athermal, CTE
Vendors: For more information, please contact info@allvaralloys.com or visit ALLVARalloys.com.

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Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 750 - 850 MPa
Tensile Strength, Yield 350 - 450 MPa
 
Thermal PropertiesOriginal ValueComments
CTE, linear 26.0 - 32.0 µm/m-°CRadial (Y and Z Directions)
 -30.0 - -25.0 µm/m-°C
@Temperature 20.0 °C
Instantaneous, Axial
 -30.0 - -25.0 µm/m-°C
@Temperature -40.0 - 60.0 °C
Mean, Axial
Maximum Service Temperature, Air 100 °C
Minimum Service Temperature, Air <= -150 °C
 
Descriptive Properties
FormsRound Bar
 Tube

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NALLVAR80 / 287946

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