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FAQ
What is the relationship between hardness and strength?
Hardness affects resistance to abrasion, and harder the material the more resistant it is to abrasion.
However, amount of abrasion is not only determined by hardness, but could be affected by adhesions caused by workpieces of certain materials.
Thickness also affects the life of material, and so the environment and manufacturing process must be taken into consideration when selecting cemented carbide grade.
There are many factors related to strength, such as transverse rupture strength, impact strength, fracture toughness value and others, therefore material selection must be made in consideration of these factors.
Q&A in the same category in this question
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What are the advantages of using cemented carbide tools?
As cemented carbide is characterized by its resistance to loss of hardness at high temperatures, its performance is not easily deteriorated even when used for machining at high speed that cause tools to have high temperatures.
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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. -
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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