Birch Flooring Janka

Though no wood on the scale has this rating a rating like this would not make for a good floor.

Birch flooring janka.

Birch wood flooring is one of the most popular and most common hardwood flooring species. Red birch is about the same hardness as white oak. The grain contrast in birch comes from the color difference between its lighter sapwood and darker heartwood. There are various kinds of birch flooring available but here are some of the most common types.

When birch lumber is graded the majority of the red heartwood and the yellow sapwood are separated. Hardness is defined as resistance to indentation using a modified janka hardness test measured by the load required to embed a 11 28 mm 0 444 in ball to one half its diameter. Yellow birch betula alleghaniensis is the most common source of birch hardwood flooring followed by sweet birch betula lenta. The scale used in the table is pounds force.

This flooring is a bit harder than the paper birch and can be compared to oaks and green ash in that capacity. The test measures the force required to push a steel ball with a diameter of 11 28 millimeters 0 444 inches into the wood to a depth of half the ball s diameter the diameter was chosen to produce a circle with an area of 100 square millimeters. Yellow birch and red birch flooring. Both have a 1290 rating on the janka hardness scale.

The janka scale is used to determine the relative hardness of particular domestic or exotic wood species. Grades of red birch flooring available. Woods with a higher rating are harder than woods with a lower rating. Birch janka hardness rating 1260.

Some manufacturers of hardwood flooring offer collection of both varieties some only work with yellow birch. 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. A measure of the hardness of wood produced by a variation on the brinell hardness test. A common use of janka hardness ratings is to determine whether a species is suitable for use as flooring.

It measures the force required to embed an 11 28 millimetres 0 444 in diameter steel ball halfway into a sample of wood. Janka hardness ratings for various species of wood pounds. The united states and canada. 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 birch species can be divided into two subspecies that are most often used for flooring the yellow birch and the red birch. The species birch can be broken down into two varieties of hardwood flooring.