The Janka hardness test is a measurement of the force necessary to embed a .444-inch steel ball to half its diameter in wood. It is the industry standard for gauging the ability of various species to tolerate denting and normal wear, as well as being a good indicator of the effort required to either nail or saw the particular wood.


Species
Hardness Rating

Brazilian Walnut
Brazilian Teak
Brazilian Redwood
Brazilian Cherry
Santos Mahogany
Tigerwood
Hickory
Hard/Sugar Maple
White Oak
Red Oak
Carribean Heart Pine
Heart Pine
American/Black Walnut
Southern Yellow Pine
White Pine
Eastern White Pine

3684
3540
3190
2350
2200
1850
1820
1450
1360
1290
1280
1225
1010
870
420
380