Controlled Expansion Alloys

NAS 21-6

A material with a high coefficient of thermal expansion, NAS 21-6 has superior characteristics for use in bimetals and trimetals. Nippon Yakin supplies this product in coil and sheet forms.

  • Image: Coil
    Coil
  • Image: Sheet
    Sheet

Designation / Standard

Nippon Yakin Grade ASTM EN JIS
NAS 21-6 ― ― ―

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Chemical Composition

  C Si Mn P S Ni Cr Fe
Min ― ― 0.5 ― ― 20.0 5.0 ―
Max 0.030 0.35 1.0 0.030 0.020 21.5 6.0 Balance

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Physical Properties

Specific resistivity (μΩ･cm) 20℃ 77
Coefficient of thermal expansion (10-7/℃) 30–100℃ 189

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Features

NAS 21-6 can be clad rolled or welded with an alloy having a low coefficient of thermal expansion to produce bimetals.

Applications

Bimetal products

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