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Rose's alloy

Technical characteristics

Rose’s alloy is an alloy of easy melting metals with drops of silver color. It was invented by German chemist Valentine Rose senior. Solidification temperature is 93° — 96 °C. Melting point of alloy is +94°С. Rose’s alloy contains bismuth of about 50%, tin of 18%, lead of 32%.

Bi Pb Sn Residual elements
50% 32% 18% 0.5%

This material is perfectly smelted in boiling water. By its properties, Rose’s alloy is almost identical to Wood’s alloy. But it differs with lower toxicity level because it does not contain cadmium in its composition.

Manufacture and application

Rose’s alloy is manufactured in a form of bars (10x12x250), drops, ingots according to requirements of technical conditions 6−09−4065−88. It is used in the form of special solder of grade POSW-50 for brazing the contacts that are sensitive to super-heating. It is also applied for brazing the copper alloys, copper+aluminium alloy in aluminium electrical stop-valves and semiconductor technologies. It is also used for tinning and brazing of copper alloys or nickel, brass, bronze, silver-plated ceramics, details, and jewellery. This alloy is often used by radio amateurs for tinning the copper surfaces of etched plates. It is done in the following way: in boiling water is added 2−3 drops of alloy and then a citric acid. After that, the plate is put down into container and forced with copper side against the bottom with a help of stick. Finished plate is picked out and decontaminated with absorbent cloth.

Transportation and storage

Rose’s alloy is usually stored in tightly packed container or in inside storage during three years. Getting onto the skin, this alloy can give a hive or intoxication as long as it contains heavy metals. Its transportation can be done by any type of transport.


Would you like to buy Rose’s alloy by wholesale? «Auremo» supplier proposes to buy goods on favorable terms. It complies with GOST and International Standards of quality. Rose’s alloy forms according to technological peculiarities of manufacturing process without including additional expenses. All products are certificated. When there is a need, products can pass through an additional checking. There are the shortest terms of supply. We are working with experienced managers who are always ready to answer all your questions. If you buy Rose’s alloy by wholesale, you will be given special discounts.

Buy at a bargain Rose’s alloy price

Easy melting alloys that are sold by «Auremo» Rose’s alloy supplier comply with GOST and International Standard of quality. A wide selection of products, comprehensive consulting service, affordable Rose’s alloy price and short-time delivery define a company’s image. Supplies are implemented directly from stock. It gives a vivid choice of products for customers and significant saving in storages and premises. «Auremo» Rose’s alloy supplier has all capabilities for manufacturing the high-quality products of off-gauge sizes by individual order. We invite you to a partnership.