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FAQ
What is the difference between cemented carbide and cermet?
Both cemented carbide and cermet are composite materials made by mixing and sintering carbide or nitride powders with a metallic binder.
However, whereas cemented carbides are made of tungsten carbide (WC), the main component, bonded mainly with cobalt (Co) and nickel (Ni),
Cermet is made by bonding titanium compounds such as titanium carbide (TiC) and titanium carbide nitride (TiCN) with nickel (Ni) and cobalt (Co).
In other words, the difference between cemented carbide and cermet is the main component.
Q&A in the same category in this question
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How do you store cemented carbide products?
For cemented carbide materials:
Storing at room temperature is fine. (Less than 300 in Celsius, as cobalt oxidizes at that temperature)
Humidity will leads to rusting, so we recommend storing the materials in an area with low humidity.
For complete metal molds:
Cemented Carbide corrosion can occur from grinding fluid, lubricating liquid, or other liquids.
If the grinding or lapping surface is not stored properly, corrosion may occur.
Store using a rust preventive oil or paper. -
What is the difference between cemented carbide and HSS?
Cemented carbide is an alloy with high hardness, heat resistance and strength. HSS, on the other hand, generally has relatively lower strength and heat resistance, but has higher impact resistance.
As their raw materials and manufacturing methods differ, there is a significant difference in costs between the two materials.
Selecting the suitable material is recommended though considering the application and the timing of replacement after installation.
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What are the effects of corrosion?
We checked a cemented carbide made 20 years ago, and verified 20 microns worth of corrosion.
Only the surface was corroded, so we were able to remove it by reprocessing it.
However, there are cases where some corrosion cannot be removed due to working environments, so we recommend regrinding if the corrosion is 0.1mm or greater. If storing after regrinding, ensure that all processing liquids have been removed and dried. Apply the carbide with rust preventive oil or paper, or cover in alumina powder.
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