Hardest Wood Flooring Janka Scale

The janka test measures the amount of force required to embed a 0 444 steel ball into the wood to half of its diameter.

Hardest wood flooring janka scale.

The diameter was chosen to produce a circle with an area of 100 square millimeters. The janka hardness scale starts at zero with this option being the softest wood choice making it easy to dent and scratch. Woods with a higher rating are harder than woods with a lower rating. The test measures the force required to push a steel ball with a diameter of 11 28 millimeters 0 444 inches into the wood to a depth of half the ball s diameter.

The janka scale is used to determine the relative hardness of particular domestic or exotic wood species. The janka test was developed as a variation of the brinell hardness test. The janka test measures the force required to embed a 444 inch steel ball into the wood by half its diameter. The janka hardness test from the austrian born emigrant gabriel janka 1864 1932 measures the resistance of a sample of wood to denting and wear.

To give some quantification to the issue of wood species hardness the lumber industry created the janka hardness scale a standard now widely accepted as the best means of ranking a wood s hardness. It measures the force required to embed an 11 28 millimetres 0 444 in diameter steel ball halfway into a sample of wood. This test is one of the best measures of the ability of a wood specie to withstand denting and wear. The scale used in the table is pounds force.