Janka Hardness test - a measure of the Hardness of wood
- Wednesday, 12 May 2021
Evaluating properties of Wood-based Fibre & Particle Panel materials
Damage caused by stiletto type heels or even fine legged furniture, can be a significant concern for consumers of high cost products such as flooring in both residential and commercial premises.
Janka Hardness ASTM D1037, Clause 17
The Janka Hardness Test is a measure of the hardness of wood, developed as a variation of the Brinell hardness test, to determine the suitability of various timbers for flooring. The test measures the force required to push a steel ball with a diameter of 11.28 millimetres (100 mm2 area at it widest) into the wood to a depth of half the ball's diameter (5.64 mm).
Testing is conducted using a constant rate of extension (CRE) testing unit. The compressive load required to force the ball to 5.64mm into the specimen is recorded and expressed as the hardness value. A number of individual tests are conducted and results averaged to determine the Janka Hardness.
LINK to Fact Sheet: Janka Hardness Test
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