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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Janka Hardness | The Wood Database

This should only be used as a general guide when comparing various species of wood flooring. Retrieved 28 August Hardness information is in chapter 5. In Sweden it is apparently in yardness kgfand in Australia, Janka hardness ratings are either in newtons N or kilonewtons kN.

Stability is defined by the level of flux, expansion and “movement” a wood will have when exposed to different humidity levels. Frame and panel Frameless construction. Antony Croft October 22, at 1: Thank you for clarifying. It has a Janka hardness of lb which technically makes it a softwood but a lot of people vouch for its durability. Alden Hardwoods of North America. The most common use of Janka hardness ratings is to determine whether a species hardjess suitable for use as flooring.

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The results are stated in various ways in different countries, which can lead to confusion, especially janla the name of the actual unit employed is often not attached. Canadian owned and operated.

Bamboo Flooring Janka Hardness Scale

Douglas fir provided a good stable surface to work on. A wood’s relative hardness is determined with the Janka Rating System, which measures the force required to drive a.

Forest Products Laboratory, March Alan Bendtsen and Martin Chudnoff. In the United States, the measurement is in pounds-force lbf. This test is one of the best measures of the ability of a wood specie to hardnes denting and wear.

For years, bamboo was not mentioned in Janka reports and list. Are you an aspiring wood nerd? Is there a specific threshold? Other sxale affect how flooring performs: It is one of the best measures to determine the hardness and durability of wood species.

In Sweden it is in kilograms-force kgfand in Australia, either in newtons N or kilonewtons kN. In the United States, the measurement is in pounds-force lbf. Site by Orchard Design.

Roughly, I would try to stay around the lbf mark. In the United States, the measurement is in pounds-force.

The Janka test is often used to deduce bamboo flooring hardness. Retrieved 20 December In Janka’s original test, harrdness results were expressed in units of pressure, but when the ASTM standardized the test tentative issue instandard first formally adopted init called for results in units of force. Where would you draw the line for the 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, sfale lbf radial.

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I had a query with regards to Douglas Fir wood. Bamboo Flooring Janka Hardness Hwrdness. February 4, at 8: Tropical Timbers of the World.

Janka Hardness Scale | Superior Hardwood Flooring

Red Oak, which has a Janka rating ofis the industry benchmark for comparing the relative hardness of different wood species. Views Read Edit View history.

All articles with unsourced statements Articles with unsourced statements from March ianka Wood as an Engineering Material. Blank cells occur where a wood is sold commercially but so far we have found no hardness data.

We show the common name preferred by the Forest Products Laboratory. How Stable is Your Wood? We have listed some of the most popular choices in wood flooring and included some more exotic species for your reference and comparison.

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