Janka wood hardness

What is the Janka scale? It measures the force required to embed an 11. The Janka test measures the amount of force required to embed a 0. Woods with a higher rating are harder than woods with a lower rating. The scale used in the table is pounds-force. Depending on the room where the flooring will be installe a certain level of hardness may make it a more desirable choice.

Who could imagine a wood species that is over three times harder than white oak? On the lower end of the spectrum, basswood has a hardness of around 4lb f (8N). The test measures the force required to push a steel ball with a diameter of 11. It is not productive to take issue with the exact number, but rather understand the relative hardness of one wood to another. In hardwood flooring , the score is used to determine the durability of hardwood species that it might be suitable for a home.

Generally speaking, softwoods tend to be softer than their hardwood counterparts. However, there are plenty exceptions to that. Wood flooring, however, has been milled at about 6- moisture content an by the time you walk on it, has been treated with several layers of protective finish. The type of construction and finish also play an important role in the durability and ease of maintenance of any wood floor. The more force required to embed the steel ball, the harder the material is.

Although not exact, the scale is a good reference for which hardwood can better withstand denting and wear when compared with another wood species. Wood species vary in many ways, but a key factor in finishing wood is the hardness of the wood. The US typically will use lbf. A common measurement for wood hardness is the Janka scale.

It is the industry standard for gauging the ability of various species to tolerate denting and normal wear, as well as being a good indicator of the effort required either to nail or to saw a particular type of wood. Janka Hardness Scale for Wood Flooring Species. This force is recorded in both pounds-force (lbf) and kilo-Newtons (kN).

Rot Resistance: Given its past use as fence posts, the wood is assumed to be very durable. Janka hardness measurements reflect the number of pounds pressure it takes to press a. Since the hardness of each plank varies by grain pattern, Janka ratings will provide a general guide to a species’ hardness. Wood Hardness - Janka Chart When it comes to making a distinction between wood which is suitable for wooden floors and the rest we simply refer to hardwood and softwood. We have found this to be one of the best measures of the ability of wood species to withstand denting and wear.

Wood hardness testing I have always been meaning to figure out a simple way to characterize the strength of some of the wood that I use. This test involves pushing a steel sphere of 11. The higher the number on the scale, the harder the wood. In other words, the hardness rating is the wood ’s resistance to.

It’s a good measurement technique to determine the relative hardness across hardwoods. Please note that this article may include affiliate links. Genuine mahogany decking and flooring is a hard wood and an excellent choice for your project.

This makes it a strong wood capable of taking a few accidental drops and hits without consistently denting. Compare this to red cedar, which has a Janka Score of 3lbf, genuine mahogany is more than twice as strong. The Industry Standard for Hardness. The hardness of a wood is rated on an industry wide standard known as the Janka test.

It is also a good indicator of how hard a specie is to saw, mill and nail. This method in an indention 1square millimeters in size. It certainly has to be harder than lead or tin, but what about copper or aluminum?