Along with boron nitride, diamond is among the “super hard cutting materials” and it is used in the form of polycrystalline synthetic diamond powders to manufacture diamond tools.
To do so, a precisely defined mixture of metal powder and diamond powder is sintered onto the hard metal core of the cutting tool. The metal matrix binds the diamond particles in defined positions. If a diamond particle is worn down, the soft metal matrix is removed to the point that the next diamond particle on the surface appears and can be used (shark tooth principle).
Brass is an alloy made of copper and zinc in various compositions.
Air atomization of the molten material results in irregularly shaped powders. Common compositions are brass I (approx. 92%Cu/8%Zn), brass II (approx. 82%Cu/18% Zn) and brass III (approx. 70%Cu/30%Zn)
|Apparent density [g/cm³]||Copper content [%]||flowability||Sieve analysis [%]||Zinc content [%]||Application|
|approx. 3||approx. 80||flowable||>200µm: max. 5||approx. 20||
Rogal Tin Bronze GK
Alloying and atomization of copper and tin in air produces irregularly shaped bronze powder. Deoxidizing components (e.g. phosphorus) can be added to produce powders with light gloss, e.g. those needed in filter materials.
A standard alloy contains approx. 90% copper and 10% tin. Special alloys and the respective particle size distribution are part of the individual specifications and are ensured through effective process and quality control.
|Apparent density [g/cm³]||Copper content [%]||flowability||Phosphorus content [%]||Sieve analysis [%]||Tin content [%]||Application|
|approx. 5||approx. 96||flowable||max. 0.4||> 63µm: max.5||approx. 4||
|approx. 5||approx. 90||flowable||max. 0.4||> 80µm: max.5||approx. 10||
|approx. 5||approx. 90||flowable||max. 0.4||>125µm:max.5||approx. 10||
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