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
  • Taun 1900
  • Hickory / Pecan 1820
  • Guajuvira / Brazilian Hickory / Brazilian Pecan 1810
  • Australian Wormy Chestnut / Afzelia 1810
  • Bolivian Rosewood 1780
  • Acacia 1750
  • 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