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Superhard Materials

According to the definition of Wikipedia, a superhard material is a kind of material with its Vickers hardness exceeding 40 GPa, higher than any other conventional abrasive materials.Learn more

Natural Diamond Specifications

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Guide for Natural Diamond Specifications

Grading System

Superhard materials are measured by different grading system standards that define a limited range of particle sizes for each grade. So the grit size designations are not consistent across different grading systems.

ANSI:American grading or grit size standards for Superhard materials. ANSI stands for "American National Standards Institute".

FEPA:European grading or grit size standards for Superhard materials. FEPA stands for "Federation of European Producers of Superhard materials Products".

JIS:Japanese grading or grit size standards for superhard materials. JIS stands for "Japanese Industrial Standards".

ISO:International grading or grit size standards for superhard materials. ISO stands for "International Organization for Standardization".

GB/T:Chinese grading or grit size standards for superhard materials.

Other:Other unlisted, proprietary, or specialized grading or grit size system.


Resin Bonded Abrasives:This kind of grinding tools have a very wide applications,and more than 80% of the world’s hard alloy workpieces need it for processing, such as semiconductor materials, new energy crystal ferrite materials, building materials, ceramics, engineering ceramics, functional ceramics, glass materials, refractory materials, electrical carbon materials, non-ferrous metal materials, high hardened metal materials, as well as natural and artificial stone, etc.

Metal Bonded Abrasives:Commonly used metallic bond are copper and tin, some other metal powder, such as silver, nickel and zinc can be added to improve its performance.

Vitrified Abrasives:Its Application scope is becoming wider and wider with its consumption increasing. They are mainly used in the grinding and processing of diamond tool, cubic boron nitride cutting tools, carbide and new engineering ceramics materials coarse grinding, fine grinding and ultra fine grinding, metal ceramics, cast iron, ceramics, gems, ferrite, concrete, refractory materials, and fiber reinforced plastics.

Electroplated Products:It refers to deposit nickel cobalt alloy on the surface the metal substrate and fix abrasive diamond by electrodeposition. There is a great variety of electroplated diamond grinding tools of different shapes. To plate out qualified products requires diamond powder of different sizes, adapt technology and skills.

Lapping/ Polishing:Due to its high hardness of diamond and boron carbide particles, they play an indispensable role for machining hard and brittle materials, suitable for the grinding and cutting of high-speed steel, bearing steel, special alloys, etc. It can be applied to wet or dry grinding, while wet grinding effect is better.

Sawing Tools:It refers to all kinds of diamond cutting blade, including circular saw, gang saw and wire saw, etc. It is mainly applied on marble granite, concrete and other nonmetallic materials.

Drilling/ Milling Tools:Mainly include geological metallurgical bit, oil (gas) well drilling, engineering drill bit, drill bit, glass stone, etc.

Dressing Tools:Mainly include diamond grinding block, diamond wheel, diamond pen, cutter, grinding wheel cutter, and other dressers.

Wire Drawing Dies:They have been used widely in such areas as high precision wire in electronics, radar, TV, instruments and aerospace. Besides, commonly used tungsten, molybdenum wire, stainless steel wire, cable wire and all kinds of alloys are all made from diamond dies, which has extremely strong wear resistance and high service life due to adopting natural diamond as the raw material.

Other:Other unlisted grinding, cutting, finishing applications.

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