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Hardness Scale

Janka Hardness Table

The Janka (or side) hardness test measures the force required to embed a .444 inch steel ball to half its diameter in wood. This is one of the best measures of the ability of wood species to withstand denting and wear. It is also a good indicator of how hard a species is to saw or nail.

The higher the number the harder the wood

Douglas Fir 660
So. Yellow Pine (loblolly & short leaf) 690
So. Yellow Pine (longleaf)
870
Black Cherry
950
Teak
1000
Black Walnut
1010
Heart Pine
1225
Iroko - Kambala
1260
Yellow Birch
1260
Red Oak (Northern)
1290
American Beech
1300
Ash
1320
White Oak
1360
Australian Cypress
1375
Hard maple
1450
Brazilian Maple
1500
Zebrawood
1575
Wenge
1630
Kempas
1710
African Pedauk
1725
Bamboo
1800
Hickory/Pecan
1820
Purpleheart
1860
Jarrah
1910
Merbau
1925
Sydney Blue 2023
Brushbox 2135
Tigerwood
2160
Santos Mahogany
2200
Mesquite
2345
Brazilian Cherry
2350
Spotted Gum 2473
Bloodwood
2900
Tiete Rosewood
3200
Brazilian Teak
3540
Brazilian Walnut 3620


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