MCP Quality

The alloys are produced from high-grade constituents, following strict specifications. Quality is monitored by an accredited system conforming to ISO 9002.

The alloy compositions remain stable for long periods of repetitive use. With proper attention to correct usage, MCP low melting-point alloys can be re-used continually over periods extending into years. The specially designed MCP melting pots are recommended.

If the alloy composition is found to have drifted away from the original specification, it can usually be corrected in-house by the user. For this purpose, a testing service is available at the Wellingborough production laboratory.

A prime feature of each of the recommended alloys is the low temperature at which it can be poured: this combines with low specific heat and latent heat of fusion to make it possible to cast against many containing materials without causing undue thermal expansion or distortion. The viscosity and surface tension are also low, making for accurate penetration of the pattern. The volume changes, both during and after solidification, are very small, ensuring accurate, full size reproduction. With no shrinkage, hammering-in is unnecessary.

It is usually possible to use the alloys at several stages of manufacture. Half-casts can be taken quickly and easily, even from dies with irregular split-lines, and the flash and gutter can be checked at this stage.