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BI-METAL, as the name implies, is a combination of two metals – a precious contact metal bonded to a suitable backing metal. Bi-metals are designed to effect economy by way of reduction in use of precious metals like Silver. Generally, Silver or an alloy of Silver forms the contact material while Copper/ Brass aee the most commonly used Backing materials. The bond between contacts and Backing materials is mechanically and Thermally sound. |
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MML BI-METAL strips are available in widths up to 150mm and in total thickness starting from 0.2mm onwards. Normally, Contact material thickness is 25% 30% or 50% of the total strip thickness. However Contact materials thickness ranging from 3% to 50% of the total strip thickness can be provided. Bimetal can also be available in the form of either edgelay or throughlay. It is also possible to have an arrangement of several strips of different width. Edgelay and Throughlay Contact Bimetals are suitable for manufacture of contacts for micro switches, MCB’s etc. Material in strips having thickness of 1.2mm and below is normally supplied in coils, while material in higher strip thickness is always supplied flat. Apart form Bi-Metal strips, finished BI-METAL CONTACTS can also be press formed and supplied against specific orders. |
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