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Nitinol ( Ni55/Ti45 )

Material Information

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General Description:  

Shape memory alloy is a description applied to that group of metallic materials which show the ability to return to the previously defined shape or size when subjected to the correct thermal procedure. Uses include blood clot filters, cryogenic coupling rings, proportional control valves and orthodontic correction.
   

Electrical Properties

Electrical resistivity ( µOhmcm ) Au: 100, Ma: 80

Mechanical Properties

Elongation at break ( % ) 15 - 40
Modulus of elasticity ( GPa ) 60 - 90
Tensile modulus ( GPa ) 60 - 90
Tensile strength ( MPa ) 1140

Physical Properties

Density ( g cm-3 ) 6.5
Melting point ( C ) 1310

Thermal Properties

Coefficient of thermal expansion @Au: 11, Ma: 6.6C ( x10-6 K-1 )
Temperature - Austenitic ( C ) 18, 36
Temperature - Martensitic ( C ) 2, -15
Thermal conductivity @23C ( W m-1 K-1 ) Au: 18, Ma: 8.6

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