Acacia Hardwood Janka Rating. Us hickory 1820. 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. The janka test measures the amount of force required to embed a 0 444 steel ball into the wood to half of its diameter.
The janka hardness test measures the lb in2 required to embed a 444 inch steel ball to half its diameter in wood. Us hickory 1820.
It is also a good indicator of how hard or easy a species is to saw or nail.
The grain is uniform and fine. Woods with a higher rating are harder than woods with a lower rating. Reducer 12 shoe mold 6 stair nose 13 t mold 6 threshold 6 more ways to shop. A common use of janka hardness ratings is to determine whether a species is suitable for use as flooring.
