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Wood Hardness

Soft and hardwood - Janka Hardness

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For wood hardness is a measure of resistance to dent and wear.

The Janka test measures the force (N, lbf) required to embed an 11.28 mm steel ball into the wood half the ball's diameter. Larger force - harder wood.

The Janka Hardness Values for some common Wood Species

WoodHardness
(N)
Brazilian Ebony 16420
Ipe 16390
Cumaru 15470
Ebony 14300
Golden Teak 10400
Merbau 8560
Hickory 8100
Rosewood 7900
White Oak 6000
Birch 5600
Teak 5140
English Oak 5000
Burmese Teak 4600
Black Walnut 4500
Cherry 4200
Mahogany 3600
Douglas Fir 2900
Alder 2600
Chestnut 2400
Poplar 2400
Hemlock 2200
White Pine 1900
Balsa 440

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