JANKA HARDNESS SCALE PDF

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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The Janka Hardness Scale rating has become the industry standard for determining whether a given wood is suitable for flooring material. BPS October 22, at 2: For years, bamboo was not mentioned in Janka reports and list. Views Hxrdness Edit View history. Wood—Determination of static hardness. In Sweden it is in kilograms-force kgfand in Australia, either in newtons N or kilonewtons kN.

Janka hardness test

Forest Products Lab, January The hardness of a wood is rated on an industry wide standard known as the Janka test. Soft and Ambrosia Maple.

hardnesz The higher the number the harder the wood. Who could imagine a wood species that is over three times harder than White Oak? No information on contributors is available for this page. I have amassed over wood species on a single poster, arranged into eight major geographic regions, with each wood sorted and ranked according to its Janka hardness.

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Green, Marshall Begel and William Nelson. Forest Products Laboratory, March Roughly, I would try to stay around the lbf mark.

Janka hardness test – Wikipedia

Testing on the surface of a plank, perpendicular to the grain, is said to be of “side hardness”. Red Oak, which has a Janka rating ofis the industry benchmark for comparing the relative hardness of different wood species. Skip zcale main content. Aspiring wood nerds be advised: Site by Orchard Design. As you explore our wood options for your home, feel free to refer back to this chart to see where your wood choice ranks on the hardness scale.

In the United States, the measurement is in pounds-force lbf. Where would you draw the line for the hardness? The Janka test is often used to deduce bamboo flooring hardness.

Bamboo Flooring Janka Hardness Scale

Alden Hardwoods of North America. The majority of hardwoods and many softwoods are durable enough to withstand normal flooring use – especially with proper installation and finishing. The actual number listed in the harsness profile is the amount of pounds-force lb f or newtons N required to imbed a.

Hardness Woodcarving Wood Hardness tests. So just wanted to check with you too. All articles with unsourced statements Articles with unsourced statements from March A measure of the hardness of wood, produced by a variation on the Brinell hardness test. The hardness of wood usually varies jaanka the direction of the grain.

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Janka Hardness Scale The Janka scale rates the relative hardness of wood. End testing is also sometimes done that is, testing the cut surface of a stump would be a test of end hardness. From Wikipedia, the free encyclopedia.

In the United States, the measurement is in pounds-force. We show the common name preferred by the Forest Products Laboratory.

Some information sources say or imply, incorrectly, that Janka hardness is measured in units of pressure, such as pounds per square inch, and that side hardness is a synonym for Janka hardness. The record softness of 22 lbf is often falsely ascribed to quipo, but all such reports appear to be a misreading of figures 15 and 16 from this primary source, which makes clear that measurement is of balsa, and the softest quipo measured was 46 lbf tangential, 38 lbf radial.

In the United States, the measurement is in pounds-force lbf. This is one of the best measures of the ability of wood species to withstand denting and wear.

Properties of Seven Columbian Woods. The side hardness of teak, for example, is in the range to newtons, while the end hardness is in the range to newtons. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring.