Two Metal Laminated Strip Compound Bar
$13.00(Ex GST)
• Brass and iron laminated bimetal compound strip, riveted, blade 350 × 20 mm.
• Wooden handle fitted for a secure grip, reduces hand heat exposure during flame heating.
• Different expansion rates of brass and iron layers bend strip when heated, clear movement.
• Simple visual proof of two-metal differential thermal expansion, ideal for heat and materials lessons.
• Place blade over flame, demonstrate bend, allow cooling before handling, supervised lab or classroom use only.
- Description
Description
This compound bar is a two-metal laminated strip used to demonstrate differential thermal expansion. The riveted brass and iron layers are fixed together and fitted to a wooden handle. When the blade is placed over a flame, the two metals expand at different rates, causing the bar to bend. The visible curvature provides a clear classroom demonstration of how expansion differs between metals.
Blade size is 350 × 20 mm (3.5 × 20 cm). Intended for laboratory or educational settings only, use under appropriate supervision.
FAQs
Q: What does this apparatus demonstrate?
A: Different thermal expansion rates of two bonded metals, shown by bending during heating.
Q: Which metals are used?
A: Brass and iron.
Q: How is it used in a practical?
A: Heat the laminated blade over a flame and observe the bending as temperature increases.
Q: What is the blade size?
A: 350 × 20 mm (3.5 × 20 cm).
Q: Why does it bend when heated?
A: Brass and iron expand at different rates while riveted together, forcing curvature.
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