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Bimetallic Strip
Bimetallic Strip (Product Code: SLE/PHY/138) is a brass-and-steel strip used to demonstrate the unequal expansion of two metals, which makes the strip curve when it is heated in a flame, in school and college physics labs. The 200 x 15 mm strip is riveted with heat-resistant rivets and set in a well-finished wooden handle for safe holding. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Strip size | 200 x 15 mm |
| Metals | Brass and steel |
| Joining | Riveted together with heat-resistant rivets |
| Handle | Well-finished wooden handle |
| Demonstrates | Differential expansion of two metals, shown by the curvature produced when the strip is heated in a flame |
| Product code | SLE/PHY/138 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is a Bimetallic Strip Used For?
Held in a Bunsen or spirit-lamp flame, the bimetallic strip curls because brass expands more than steel for the same rise in temperature, so the brass ends up on the outside of the curve. Students can then predict how it will bend when chilled instead, and check that it curves the opposite way.
The same effect is the working principle of thermostats, fire alarms and flashing indicator units, which makes the strip a useful bridge between physics lab equipment in India syllabuses and everyday devices. Heat the strip evenly along its length, keep the wooden handle well clear of the flame, and let the metal cool naturally before it goes back into storage.
OEM Manufacturer
Jain Scientific Equipments Private Limited, better known by its trading name ScienceLab, makes this Bimetallic Strip as the OEM at its own licensed factory at Saha, Ambala, Haryana, India. Because the strip comes straight from the maker, institutions, dealers and importers get factory-direct quotations and can ask us about repeat batches for several labs at once. See the company profile for background.
Related Physics Lab Equipment
Other apparatus for the thermal expansion topic:
- Ball & Ring Apparatus — shows a single metal expanding until a ball no longer fits a ring.
- Bar & Gauge Apparatus — tests a heated iron bar against a brass gauge.
- Bar Compound Copper & Iron — another two-metal bar used to explain the thermostat principle.
- Glass Spirit Lamp — a steady, gentle flame for heating the strip.
View the full Physics Lab Equipment category for related heat apparatus.
Frequently Asked Questions
What metals are used in the Bimetallic Strip?
The Bimetallic Strip is made of brass and steel riveted together with heat-resistant rivets. The strip measures 200 x 15 mm and is mounted in a well-finished wooden handle so it can be held in a flame comfortably.
Which way does the Bimetallic Strip bend when heated?
When heated, the Bimetallic Strip bends towards the steel side, because the brass expands more and forms the outer, longer side of the curve. When cooled below room temperature, it bends the other way as the brass contracts more.
What heat source should be used with the Bimetallic Strip?
A Bunsen burner or spirit lamp works well with the Bimetallic Strip. Move the strip slowly through the flame so both metals warm evenly, and hold it by the wooden handle so the hand stays well away from the heated metal.
How does the Bimetallic Strip relate to a thermostat?
The Bimetallic Strip shows the same bending that a thermostat uses: as temperature changes, a two-metal strip curves and can open or close an electrical contact. Showing the strip first helps students understand how irons, heaters and alarms switch themselves.
Who manufactures the Bimetallic Strip?
The Bimetallic Strip is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. It is supplied factory-direct to schools, colleges, institutions, dealers and importers.
How do I get a quotation for the Bimetallic Strip?
To get a quotation for the Bimetallic Strip, send the product code SLE/PHY/138, the quantity you need and your delivery location through our contact page or enquiry cart. Bulk and export enquiries for India and international markets are welcome.
Request a Quote
Request a price for the Bimetallic Strip via the contact page or the enquiry cart; the quotation is prepared directly by the manufacturer.
Last updated: 24 September 2026
