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Janka Hardness


The Janka hardness test measures the force required to embed a 0.444 inch steel ball into wood. This test is also used to determine the degree of difficulty in sawing and nailing.  Values are given in pounds. The higher the number, the harder the wood.

Species
Ipê / Brazilian Walnut / Lapacho 3650
Cumaru / Brazilian Teak 3540
Massaranduba / Brazilian Redwood / Paraju 3190
Jatoba  / Brazilian Cherry 2350
Golden Teak 2330
Santos Mahogany / Cabreuva 2200
Tigerwood / Brazilian Koa 2160
Sucupira / Brazilian Chestnut 2140
Hickory / Pecan 1820
Australian Wormy Chestnut / Afzelia 1810
Bolivian Rosewood 1780
Acacia 1750
African Cherry / African Padauk 1725
Sapele / Sapelli 1510
Hard Maple / Sugar Maple 1450
White Oak 1360
Ash (White) 1320
Red Oak (Northern) 1290
Yellow Birch 1260
Black Walnut / North American Walnut 1010
American Cherry 950
Southern Yellow Pine (Loblolly and Shortleaf) 690