Janka Hardness Rating
Janka Hardness Rating (Wood Flooring)
Floor Detective® Claims and Conditions Guide
Summary
The Janka hardness rating is a laboratory measurement used to compare the relative resistance of wood species to indentation. The test determines the force required to embed a standardized steel ball to one-half of its diameter into a wood sample. Janka values provide a comparative reference point for dent resistance under concentrated point loads but do not define overall durability, scratch resistance, or ….
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