Hb-5 The Bimetallic Strip (Compound Bar)


To demonstrate differential expansion and curvature induced by unequal expansion.


  • Bimetallic strip consisting of Brass-Invar
  • Bunsen burner

Bimetallic Strip 1 Bimetallic Strip 2 Bimetallic Strip Diagram

Bimetallic Strip Apparatus.


The bimetallic strip suffers appreciable curvature within a few seconds of being placed in the flame of the bunsen burner. A dismantles fire alarm that relies on a bimetallic strip as its sensor is also available if required.