H.C. Starck’s AMPERSINT® MAP
powders can be processed in the same manner as a conventional cobalt
binder, namely as the binder for high-performance hard metals. In
contrast to the use of traditional powder mixtures, lower sintering
temperatures allow local eutectics to be avoided and therefore yield a
uniform alloyed binder phase. Abrasion resistance, high-temperature
properties and corrosion resistance of the binder metal can be adjusted
by adapting the relative amounts of the elements Fe, Ni and Co. AMPERSINT® MAP
powders effectively bind with other components in the mixture (WC and
C) thus generating a superior hard metal product. The typical
disadvantages of cobalt, such as precipitation, phase transitions and
grain growth are all avoided.
A further advantage of this
binder system in comparison to the use of cobalt is the significantly
lower inhalation toxicity of the hard metal powders or grinding dust.
A6050 in particular represents a proven binder alloy also suitable for
less demanding metal applications, such as milling and finishing.
However, AMPERSINT® MAP M types feature very high shock- and
fatigue resistance and are highly suited for binder contents exceeding
10 %. Some typical applications can be found in the production of wood
and stone cutting tools as well as wear parts.
We would be pleased to tell you more about our powder capabilities for alternative binder systems. Please contact us to learn more about our AMPERSINT® MAP powders.
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