Janka Hardness Scale

The Janka Hardness Test is used to determine how much force is needed for a steel ball (.444 inches/11.28 millimeters) to be embedded halfway in the wood.

 

In the United States the force is measured in pounds of force (lbf). This process is helpful to help customers understand how durable the floor they are purchasing is. For example in the NBA 29 out of 30 basketball courts are Hard Maple. On the Janka Hardness Scale Hard Maple is 1,450 lbf. It's a highly durable hardwood. Below we will list off some of the more popular woods that go into homes and other projects.

Janka Hardness Values

Janka Hardness Test
Species
Force (lbf)
Brazilian Ebony
3700
Brazilian Walnut, Ipe, Lapacho
3684
Grey Ironbark
3664
Lapacho
3640
Sucupira, Brazilian Chestnutt, Tiete Chestnut
3417
Ironwood
3260
Ebony
3220
Standard Woven Bamboo
3000
Red Mahogany, Turentine
2697
Live Oak
2680
Brazilian Cherry, Jatoba
2350
Mesquite
2345
Pradoo
2170
Tallowwood
1933
Hickory, Pecan
1820
Rosewood
1780
Acacia
1750
Blackwood
1720
Merbau
1712
Black Locust
1700
Red Mulberry
1680
Red Pine
1630
Zebrawood
1575
Sweet Birch
1470
Hard Maple, Sugar Maple
1450
Kentucky Coffeetree
1390
Natural Bamboo
1380
White Oak
1360
Tasmanian Oak
1350
Ash
1320
American Beech
1300
Red Oak
1290
Yellow Birch, Iroko
1260
Carbonized Bamboo
1180
Teak
1155
English Oak
1120
Peruvian Walnut
1080
Black Walnut
1010
Cherry
995
Black Cherry
950
Red Maple
950
Southern Yellow Pine
870
Lacewood
840
African Mahogany
830
Mahogany
800
Silver Maple
700
Chestnut
540
Western White Pine
420