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FAQ
What is the hardness of cemented carbides?
Generally, hardness can range from HRA88 to HRA92.
Higher hardness increases wearing resistance, but decreases impact resistance making it more prone to chipping.
Q&A in the same category in this question
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Why does the amount of Co and WC particle size affect the thickness of the heat affected layer?
It is thought that when Co is in large quantities the fusing point is lowered, which increases the amount that melts and thickening the damaged layer.
It is also thought that when WC particle size is small, the material becomes easier to melt due to the volume effect, which thickens the damaged layer. -
What are the weaknesses of cemented carbides?
Compared to general iron alloys, cemented carbide has lower toughness, which may cause chipping or peeling of the cutting edge.
In addition, as the relative density is about twice that of iron, the heavier weight of cemented carbide may be a disadvantage. -
What is the main component of cemented carbide?
The main component is tungsten carbide (WC), which becomes cemented carbide after bonding with metallic binders such as cobalt and nickel.
Additives such as chromium (Cr) are added to these alloys to create cemented carbides with various characteristics.
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