Tungsten carbide hardness and strength and grain size binder percent relation

April 08, 2024

The hardness and strength of tungsten carbide materials are directly related to the grain size and binder percentage.

In general, smaller grain sizes result in higher hardness and strength, as smaller grains provide more grain boundaries for dislocations to interact with, leading to higher strength. Additionally, smaller grains also reduce the likelihood of cracks propagating through the material, increasing toughness.

The binder percentage also plays a significant role in determining the properties of tungsten carbide materials. A higher binder percentage typically results in higher toughness, as the binder material acts as a ductile phase that can absorb energy and prevent crack propagation. However, a higher binder percentage can also lead to lower hardness and strength, as the binder material is typically softer than the tungsten carbide grains.

Overall, the optimal combination of grain size and binder percentage will depend on the specific application requirements, balancing hardness, strength, and toughness to achieve the desired performance characteristics.

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