Different types of material have different method to test the hardness to determine strength, resistance, susceptibility, denting and other factors.
These factors are important to ensure the quality of the product or identify the element. Measuring wood hardness is also important. The most common method, which decides the hardness, is known as the Janka hardness test. The name is given after Gabriel Janka, an Australian wood researcher and also the inventor of the test.
There is a chart of Janka side hardness to help others with different types of wood and hardness ratings.
How to perform the test?
The basis of the test is to try to embed a 0.444-inch ball made of steel into the wood plank and observe the performance of the wood. That will help determine the hardness.
It will determine how the wood plank performs during wearing and tearing and the force to embed the steel ball.
When the ball is inserted half of its diameter, then the force is recorded.
The process is repeated a few times and also tested from many other sides. Finally, all the results are averaged and the final value is the rating of that piece of wood. It is easy to find out the durability of that element.
Though it is said that, the system is not 100% error-free, but I will certainly give a fair idea.
The hardest wood in the world is Australian Buloke which rating is 5,060.
The value means, 5060 pounds force is needed to insert the steel ball into the surface while performing the test.
On the other hand, Balsa is the softest wood in the chart and the rating is only 22 pounds.
Good sides of this test
Suppose you want to choose a wooden floor for your home.
Now, you have to choose the best one which is suitable for the hardwood floor. Hardness is one of the main ways to know which one is to be taken. Hardness varies because of the various species of trees in the whole world.
For your home, definitely you do not want to choose the wrong wood for your home. It is quite dangerous. Also, with the test and ratings from the chart, you can easily find out the one you are looking for.
Also, consider the color, the place where the tree was harvested, finishing of the wood and wood grains.