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.

Species Janka Hardness (pounds – force)
Ipe / Brazilian Walnut 3684
Stranded / Woven Bamboo 3000
Brazilian Cherry / Jatoba 2350
Santos Mahogany 2200
Tigerwood 1850
Hickory 1820
Australian Wormy Chestnut 1810
Sapele 1510
Hard Maple / Sugar Maple 1450
Natural Bamboo 1380
Australian Cyprus 1375
White Oak 1360
White Ash 1320
American Beech 1300
Northern Red Oak 1290
Yellow Birch 1260
Carbonized Bamboo 1180
Teak 1155
North American Walnut 1010
American Cherry 995
Mahogany 800

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