Janka Hardwood Scale Acacia

The janka hardness test measures the lb in2 required to embed a 444 inch steel ball to half its diameter in wood.

Janka hardwood scale acacia.

The janka hardness scale rates the hardness of hardwood flooring and bamboo as well. 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. Raspberry jam acacia has a janka hardness rating of 3100 and a very low 5 4 percent volumetric shrinkage rate. For example mahogany has a janka hardness of 800 lbf and brazilian walnut has a janka hardness of 3 680 lbf.

When testing wood in lumber form the janka test is always carried out on wood from the trunk of the tree known as the heartwood and the standard sample according to astm d143 is at 12 moisture content and clear of knots. The grain is uniform and fine. It is also a good indicator of how hard or easy a species is to saw or nail. You can read more about the janka scale and see a list of the janka hardness ratings from findanyfloor here.

The janka hardness scale determines the hardness of a particular type of wood over another. For hardwood flooring the test usually requires a 2 6 sample with a thickness of at least 6 8mm and the most commonly used test is the astm d1037. 13 trendy hardwood flooring hardness scale acacia unique janka hardness scale logs end janka hardness rating scale for hardwood floors wood flooring hardness chart trinity products archives page 15 of 18 lumber liquidators blog products archives page 15 of 18 lumber liquidators blog 40 antique elegant bamboo flooring ideas for your home janka scale wood hardness evergreen hardwood floors. The janka rating indicates wood strength measured by the force necessary to drive a 444 millimeter steel ball halfway into a plank.

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. Below is an illustration that shows what the janka hardness test looks like.