Acacia Hardwood Janka Rating

This test measures the force required to embed an 11 28mm 0 444 in steel ball to half its depth into wood.

Acacia hardwood janka rating. New items 3 on sale 2. 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. Raspberry jam acacia has a janka hardness rating of 3100 and a very low 5 4 percent volumetric shrinkage rate. The janka rating indicates wood strength measured by the force necessary to drive a 444 millimeter steel ball halfway into a plank.

Hardwood flooring installation and construction and installation grades. It measures the force required to embed an 11 28 millimetres 0 444 in diameter steel ball halfway into a sample of wood. The hardness of a timber is measured by the janka hardness test. The scale was invented in 1906 by gabriel janka an austrian wood researcher and standardized in 1927 by the american society for testing and materials depending on the room where the flooring will be installed a certain level of hardness may make it a more desirable choice.

For example mahogany has a janka hardness of 800 lbf and brazilian walnut has a janka hardness of 3 680 lbf. Prefinished tobacco road acacia hardwood 9 16 in thick x 2 75 in wide x 78 in length stair nose. European white oak 1300. Acacia large leaf 1750.

The janka hardness test measures the lb in2 required to embed a 444 inch steel ball to half its diameter in wood. Below is an illustration that shows what the janka hardness test looks like. Janka ratings for lifecore species. The janka test measures the amount of force required to embed a 0 444 steel ball into the wood to half of its diameter.

Us hickory 1820. Hard maple 1450. A common use of janka hardness ratings is to determine whether a species is suitable for use as flooring. Acacia mangium more commonly known as black wattle in the us has a 1750 janka hardness rating and is dried to 12 percent moisture for use as flooring.

Woods with a higher rating are harder than woods with a lower rating. The scale used in the table is pounds force. The janka scale is used to determine the relative hardness of particular domestic or exotic wood species. On the janka hardness chart big leaf acacia rates 1700 pounds force while small leaf acacia rates 2200 pounds force and both fall roughly in the middle of the chart.

1100 1 2250 3 950 4 molding shape. It is one of the best measures of the ability of a wood species to withstand denting and wear. I m a little confused. The janka hardness scale determines the hardness of a particular type of wood over another.

It is also a good indicator of how hard or easy a species is to saw or nail. The grain is uniform and fine.