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The Janka
hardness scale is a common reference for judging
the hardness of each hardwood species. The
scale is based on a test that presses a .444
inch steel ball into the tested hardwood species
at a constant pressure. In the simplest terms,
the measurement of the scale rating is in
accordance with how deep the ball is embedded
into the wood - the deeper the ball, the softer
the wood.
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Persimmon |
2300 |
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Hickory |
1820 |
|
Locust |
1700 |
|
Honey Locust |
1580 |
|
Hard Maple |
1450 |
|
White Oak |
1360 |
|
Elm |
1320 |
|
Ash |
1320 |
|
Beech |
1300 |
|
Red Oak |
1290 |
|
Birch |
1260 |
|
Soft Maple |
1088 |
|
Walnut |
1010 |
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Cherry |
1010 |
|
Hackberry |
880 |
|
Sycamore |
770 |
|
Boxelder |
720 |
|
Sassafras |
630 |
|
Cypress |
570 |
|
Poplar |
540 |
|
Pine |
380 |
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