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The Janka Durability Test
The Janka Hardwood Durability Test
- The Janka Hardwood Durability Test is a method used to measure the stability and strength of specific Hardwood species. There are many differences between the various Hardwood species. While some of the species are hard, strong and dense, other species are light, smooth and soft. It’s extremely useful to know as much as possible about your next hardwood flooring purchase, for it can be vital information that helps you determine which species fits your specific needs and desires.
What is The Janka Hardwood Durability Test ?
- The Janka Hardwood Durability Test is a method used to check how durable a Hardwood species is and how resistant it can be to penetrating items. In this Durability Test, a steel ball (0.444” in Diameter) is forced through the hardwood. The purpose of this test is to insert half of the steel ball’s diameter into the Hardwood species. The force needed behind each penetration is then measured, determining the durability of the specific Hardwood species. Softer wood species will require less force, while harder wood species will require a greater amount of force.
For example, according to the test, the Cherry Hardwood Durability score is only 950 while the Birch Hardwood Durability score is 1260.
The Hardwood Durability Scale
- For your convenience, this is a complete Hardwood Durability scale, with every wood species available on Academy Floor.com, along with their Janka Durability Score.
- Every Hardwood species contains a link to its species page, where you will find more useful information, pictures and facts on that specific hardwood flooring species.
Higher score = Harder hardwood
Hard Wood Species |
Wood Botanical Name |
Janka Wood Hardness Test Score |
|
Brazilian Teak (Cumaru) Wood Hardness
|
Dipteryx odorata, Tonka Bean
|
3540
|
|
Brazilian Cherry (Jatoba) Wood Hardness
|
Hymenaea courbaril
|
2820
|
|
Strand Woven Bamboo Wood Hardness
|
Phyllostachys spp.
|
2820
|
|
Pilang (White Bark Acacia) Wood Hardness
|
Acacia leucophloea
|
2400
|
|
Santos Mahogany Wood Hardness
|
Myroxylon, balsamum
|
2200
|
|
Merbau Wood Hardness
|
Intsia spp.
|
1925
|
|
Hickory Pecan Wood Hardness
|
Carya illinoinensis
|
1820
|
|
Maple Wood Hardness
|
Acer saccharum
|
1450
|
|
Natural Bamboo Wood Hardness
|
Phyllostachys spp.
|
1380
|
|
White Oak Wood Hardness
|
Quercus spp.
|
1360
|
|
Northern Red Oak Wood Hardness
|
Quercus spp.
|
1290
|
|
Birch Wood Hardness
|
Betula spp.
|
1260
|
|
Carbonized Bamboo Wood Hardness
|
Phyllostachys spp.
|
1180
|
|
American Black Walnut Wood Harndness
|
Juglans nigra.
|
1010
|
|
Black Cherry Wood Hardness
|
Prunus serotina.
|
950
|
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