Rose's metal: low-melting alloy with many advantages
In the context of metal processing and machining, there are different types of materials for various fields of application. A special type of metal is Rose's metal, which differs from other types of metal by its characteristic composition of certain substances and can be used as a low-melting alloy with a high practical value. This compact overview describes this special type of metal for you.
The name says it all: Rose's metal
Many people think that the name Rose's Metal comes from the bismuth component of the metal grade, which has a slightly pinkish tinge. But this interpretation of the origin of the name is wrong. The low-melting alloy takes its name from its inventor: the alloy was invented by Valentin Rose the Elder - a pharmacist from Germany.
The components of Rose's metal
The low-melting alloy gets its unique character from three constituents mixed together in a specific ratio. Based on four parts by weight of the metal, bismuth (chemical element Bi) takes up two parts (i.e. 50 per cent), lead (Pb) and tin (Si) one each, which equals 25 per cent. As a mix, this means a specific density for this metal of 9.32 g/cm³.
As a low-melting alloy, Rose's metal has a lot of convincing advantages to offer. First, we will describe the main advantage of Rose's metal, which is the reason for many users to choose this and no other metal. Low-melting alloy is already the keyword here. Rose's metal melts already at 95 degrees Celsius. With many other metals, this melting point is significantly higher. Alloys that have a melting point below 350 degrees are called low-melting alloys. Rose's metal falls well below this value. Rose's metal is therefore less complicated to use and the risk of work injuries is also lower as a result. The energy costs associated with melting are also more economical.
Advantage of bismuth
Bismuth has another positive property: When it hardens, it expands. This is advantageous for shaping metal workpieces. Since the bismuth content of Rose's metal is particularly high, castings made of this material are usually particularly precise and of high quality.
Rose's metal or Wood's alloy?
Many users appreciate Rose's metal as a welcome alternative to Wood's alloy. Although this alloy melts at 70 degrees Celsius, it contains cadmium and is therefore much more toxic. However, it is important to note in this context that the lead content of Rose's metal is also toxic. The low-melting alloy is not RoHS-compliant and may not be used in food-critical areas. The main field of application of Roses Metalle are soft solders and fusible links.
Rose's metal: conveniently order the right quantity online now
You can obtain the low-melting alloy of Rose's metals from us in quantities to suit your needs. Our price-performance ratio will convince you.