The wide range of MCP low melting-point alloys includes formulations with casting and mechanical properties specially suited to the optical industry.

MCP Quality

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


Precision

MCP low melting-point alloys have compressive strength
(15-30 Mpa for 0.2% set), easily sufficient for the necessary rigidity and control in all locating and centring operations.


Durability

With proper attention to usage, the alloy compositions remain stable for long periods of repetitive use.
If the 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. The corrective amounts of constituents can be supplied as a specially formulated alloy.

Choice of Alloy

Alloy
Designation
Melting
Point
Indications For Use
MCP 47
47°C / 117°F
 Dimensionally stable. Use for plastic lenses.
MCP 58
58°C / 136°F
 The most stable alloy. Cadmium free
MCP 60
53-66°C
127-151°F
 General purpose. Use for glass or plastic
MCP 61
62°C / 158°F

Lead- and Cadmium-free.

MCP 70
70°C / 158°F
 Traditional alloy for glass lenses.


Safety & The Environment
The recommended alloys are not classified as 'dangerous' for either carriage or supply. They are easy to handle, and quite safe when the rules for normal handling are observed.