|In 1995 a Mold Task Force group was
organized by the Copper Development Association to promote the use of copper alloys in
molds for plastics.
Part of the activity of the group and the CDA was to fund research
projects at Western Michigan University to compare popular mold steels with beryllium
copper and our beryllium-free copper alloys.
The mold components made from the various materials were carefully engineereed and
constructed to eliminate any potential for variation that might be caused by the tooling
The initial testing focused on cycle time reduction, quality changes and component
performance. The tests were to observe those conditions by varying the mold core material
combined with reductions to mold cool time only. The tests were strictly controlled to
insure that there were no changes to water temperature, water flow rates, injection rate
and the mold open time.
In April 1996, results were published by the Western Michigan University that showed
our Beryllium-Free C18000 (MoldStar150) alloy performed consistently better
than the beryllium copper alloys used in the tests.
In fact, our alloy performed consistently 7% faster than the C17510 Beryllium Copper
alloy. Along with faster cycles the part proved better by quality observations. The
differences in cycle times between C17510 and C17200 were less than 5%.
These test results are extremely important to people using or considering using C17510
Because certain manufacturers of C17510 and C17200 claim in advertising and sales
presentations, that their products are substantially higher in mechanical and thermal
properties than our C18000 products. It is important to realize that the result of these
tests and other independent comparisons DO NOT support the published data.
One must also wonder then what other claims in their advertising are not totally
accurate or truthful.