Janka Wood Hardness Scale

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Janka hardness test is a measure of force required to embed a .444-inch steel ball to half its diameter into the wood. It is one of the most common ways to test the strength and wear of hardwood flooring. The higher the Janka score, the harder the particular species of the wood is.

Janka hardness test is a measure of force required to embed a .444-inch steel ball to half its diameter into the wood. It is one of the most common ways to test the strength and wear of hardwood flooring.

The higher the Janka score, the harder the particular species of the wood.