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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In the United States, the measurement is in pounds-force lbf. Alden Hardwoods of North America.

Lumber stocks tested range from 1″ to 2″ thick. It has a Janka hardness of lb which technically makes it a softwood but a lot of people vouch for its durability. The side hardness of teak, for hardnrss, is in the range to newtons, while the end hardness is in the range to newtons.

Janka Wood Hardness Scale

It measures the force required to embed an The hardness of a wood is rated on an industry wide standard known as the Janka test.

Ramon Scalw March 18, at 4: This method results in an indention square millimeters in size. But as you said, there are a lot of other properties that are more important than hardness, one of which is shock resistance.

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In Sweden it is apparently in kilogram-force kgfand in Australia, Janka hardness ratings are either in newtons N or kilonewtons kN.

What is the janka hardness rating for wood?

But in general, most hardwoods are harder than softwoods, and certainly the very hardest woods in the world harfness all hardwoods. Site by Orchard Design. I had a query with regards to Douglas Fir wood.

A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. The hardness of wood usually varies with the direction of the grain. This number is incredibly useful in directly determining how well a wood will withstand dents, dings, and wear—as well as indirectly predicting bardness difficulty in nailing, screwing, sanding, or sawing a given wood species.

From Wikipedia, the free encyclopedia. Depending on where the wood is harvested the results may vary. For years, bamboo was not mentioned in Janka reports and list.

Expansion and Contraction Problems. We show the common name preferred by the Forest Hradness Laboratory. In Sweden it is in kilograms-force kgfand in Australia, either in newtons N or kilonewtons kN.

Janka hardness

The higher the number the harder the wood. The pale blue background indicates species growing in North America. Soft and Ambrosia Maple.

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Maple and Hickory however are two species, that are not to be acclimated in your home. No information on contributors hardnews available for this page.

Bamboo Flooring Janka Hardness Scale

I had a question — At what measure of hardness is a wood classified as a hardwood or softwood? The Industry Standard for Hardness The hardness of a wood is rated on an industry wide standard known as the Janka test.

In Sweden it is hadrness kilograms-force kgf janks, and in Australia, either in newtons N or kilonewtons kN. Alan Bendtsen and Martin Chudnoff. It is a question of whether you want the marks to show up on your new piece of work or on the work bench.

Leave A Comment Cancel reply Comment. The most common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. Green, Marshall Begel and William Nelson.

Statistics below compare the janka hardness ratings for hardwood and bamboo flooring products.

Are you an aspiring wood nerd? Tropical Timbers of the World. Wiemann and David W.