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FAQ
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.
Q&A in the same category in this question
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What causes cemented carbide to crack?
Compared to metal materials, cemented carbide materials have a different thermal expansion coefficient. For this reason, cracks may occur in shrink/cooling-fitted products when the operating temperature is significantly higher (lower) than the designed value. When using cemented carbides with high hardness, problems such as cracking may occur by high impact, so the required fracture toughness value should also be carefully considered.
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Why is there a 50% change in volume?
Carbide is a material made by compacting powder during sintering, and there are some gaps inside the carbide where air and particles collide.
Through sintering, the cobalt liquefies, and a 50% reduction in volume occurs when tungsten particles are attracted due to the capillary phenomenon. The contacting surfaces of different powdered particles try to mix and homogenize, inducing the atoms to move in an attempt to create new compounds. -
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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