The Janka Hardness Test

Posted March 16, 2015 by | Leave a Comment »

Janka Hardness Test

The Janka hardness test measures the resistance of a type of wood to withstand denting and wear. It measures the force required to embed a 0.444 inch steel ball into wood to half the ball’s diameter. The Janka Hardness test results below were done in accordance with ASTM D 1037-7 testing methods.

SpeciesJanka Hardness (pounds – force)
Ipe / Brazilian Walnut3684
Stranded / Woven Bamboo3000
Brazilian Cherry / Jatoba2350
Santos Mahogany2200
Tigerwood1850
Hickory1820
Australian Wormy Chestnut1810
Sapele1510
Hard Maple / Sugar Maple1450
Natural Bamboo1380
Australian Cyprus1375
White Oak1360
White Ash1320
American Beech1300
Northern Red Oak1290
Yellow Birch1260
Carbonized Bamboo1180
Teak1155
North American Walnut1010
American Cherry995
Mahogany800

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