The Industry Standard for Hardness The hardness of a wood is rated on an industry wide standard known as the Janka test. The Janka test measures the force. The Janka Scale is a comprehensive chart of hardness ratings for a huge variety of wood species used for hardwood floors. Learn how to read it and how it. The Janka scale is used to determine the relative hardness of particular domestic or exotic wood species. The Janka test measures the amount of force required.

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Stability is defined by the level of flux, expansion and “movement” a wood will have when exposed to different humidity levels.

Janka Hardness Scale | Superior Hardwood Flooring

harcness This test measures the force required to embed an Overall, the resulting measure is always one of force. In the United States, the measurement is in pounds-force lbf. Hardness information is in chapter 5. It is also a good indicator of how hard a species is to saw or nail.

Testing on the surface of a plank, perpendicular to the grain, is said to be of “side hardness”. There are many things to consider when choosing your wood, including the hardness, natural colour of the wood, the grain and the stability. It is a question of whether you want the marks to show up on your new piece of work or on the work bench.


Roughly, I would try to stay around the lbf mark. We have all the information you need to review your wood and find out which wood is best for you. Statistics below compare the janka hardness ratings for hardwood and bamboo flooring products. Hardwood and softwood labels are somewhat misleading, and have nothing actually to do with the hardness of the wood, but rather to botany. Having to hard of a surface on your bench can cause marks in your work.

The Janka Hardness Scale rating has become the industry standard for determining whether a given wood is suitable for flooring material.

In Sweden it is in kilograms-force kgfand in Australia, either in newtons N or kilonewtons kN. End testing is also hareness done that is, testing the cut surface of a stump would be a test of end hardness.

The Janka scale rates the relative hardness of wood. It measures the force required to embed an Alan Bendtsen and Martin Chudnoff.

Janka hardness

We have listed some of the most popular choices in wood flooring and included some haardness exotic species for your reference and comparison. Angiosperms are referred to as hardwoods, while gymnosperms aka conifers are softwoods. From Wikipedia, the free encyclopedia.

Skip to main content. No information on contributors is available for this page. Sometimes the results are treated as units, e. Tropical Timbers of the World.

Janka Hardness chart for Exotic Wood and Domestic Wood | Bell Forest Products

Janka Hardness Using Nonstandard Specimens. Hardneas pale blue background indicates species growing in North America. Bamboo Flooring Janka Hardness Scale. The hardness of a wood is rated on an industry wide standard known as the Janka test.


All articles with unsourced statements Articles with unsourced statements from March The test measures the force required to push a steel ball with a diameter of The majority of hardwoods and many softwoods are durable enough to withstand normal flooring use – especially with proper installation and finishing. I had a query with regards to Douglas Fir wood.

Leave this field empty. Scle owned and operated. In Sweden it is in kilograms-force kgfand in Australia, either in newtons N or kilonewtons kN. Hardnesss fir works out great for wood working benches. This test is one of the best measures of the ability of a wood specie to withstand denting and wear.

Maple and Hickory however are two species, that are not to be acclimated in your home. Forest Products Laboratory, Hardnfss These woods tend to take on moisture quicker than other species, so these floors should be installed immediately upon arriving at your home. Cypress, Southern Chestnut. Lumber stocks tested range from 1″ to 2″ thick.