What is the hardest wood on the Janka scale?
What is the hardest wood on the Janka scale?
lignum vitae
Generally acknowledged as the hardest wood, lignum vitae (Guaiacum sanctum and Guaiacum officinale) measures in at 4,500 pounds-force (lbf) on the Janka scale.
Is there a hardness scale for wood?
The Industry Standard for Hardness The hardness of a wood is rated on an industry wide standard known as the Janka test. The Janka test measures the force required to embed a . 444 inch steel ball into the wood by half its diameter.
What is the hardest wood to cut with chainsaw?
In my area seasoned hedge(osage orange, bodark) is by far the hardest we’ve cut. I hate cutting it, it is the great chainsaw equalizer. Seasoned dog wood is also hard, they used to use it for fence post years ago in my area.
What is a good wood hardness rating?
What is a “Good” or “Bad” Janka Rating? Red Oak is a popular hardwood choice and is considered the industry median for hardness on the Janka scale, with a rating of 1260. Species with a lower rating are “softer” woods (ex. Black Walnut, 1010), while species with a higher rating are “harder” woods (ex.
How is the hardness of a wood determined?
The Janka scale is used to determine the relative hardness of particular domestic or exotic wood species. The Janka test measures the amount of force required to embed a 0.444″ steel ball into the wood to half of its diameter. Woods with a higher rating are harder than woods with a lower rating. The scale used in the table is pounds-force. Janka.
What is the Janka hardness test for wood?
These ratings were done using the Janka Hardness Test. The Janka hardness test measures the force required to embed a .444 inch steel ball to half its diameter in wood. It is one of the best measures of the ability of a wood species to withstand denting and wear.
What kind of color does redheart wood have?
Redheart’s vibrant color quickly fades to a reddish brown in direct sunlight, though this color change can be slowed (but usually not stopped entirely) by using a finish with UV inhibitors, and keeping the wood away from strong lighting.
What kind of shrinkage does heartwood have?
Shrinkage: Radial: 3.6%, Tangential: 5.5%, Volumetric: 8.9%, T/R Ratio: 1.5 Color/Appearance: Because of the spalting that is commonly present, the wood can be a kaleidoscope of colors. Under normal circumstances, heartwood is a golden brown, while other colors such as yellow and streaks of pink and/or black can also occur.