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When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ASTM D143) is at 12% moisture content and clear of knots. [3] The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the ...
Lignum vitae is hard and durable, and is also the densest wood traded (average dried density: ~79 lb/ft 3 or ~1,260 kg/m 3); [4] it will easily sink in water. On the Janka scale of hardness, which measures hardness of woods, lignum vitae ranks highest of the trade woods, with a Janka hardness of 4,390 lbf (compared with Olneya at 3,260 lbf, [5] African blackwood at 2,940 lbf, hickory at 1,820 ...
NCSU Inside Wood project; Reproduction of The American Woods: exhibited by actual specimens and with copious explanatory text by Romeyn B. Hough; US Forest Products Laboratory, "Characteristics and Availability of Commercially Important Wood" from the Wood Handbook Archived 2021-01-18 at the Wayback Machine PDF 916K; International Wood ...
Durability: Cherry dents easily at a 950 on the Janka scale (which measures relative hardness of particular wood species), so limit it to areas like bedrooms and protect with rugs. Price Point ...
Ironwood is a common name for many woods that have a reputation for hardness, or specifically a wood density that is denser than water (approximately 1000 kg/m 3, or 62 pounds per cubic foot), although usage of the name ironwood in English may or may not indicate a tree that yields such heavy wood.
The density of dry balsa wood ranges from 40 to 475 kg/m 3, with a typical density around 160 kg/m 3. [5] [6] [7] Balsa is the softest wood ever measured using the Janka hardness test (22 to 167 lbf). [8] The wood of the living tree has large cells that are filled with water. This gives the wood a spongy texture.
The wood is very hard, measuring 3,684 lbf (16,390 N) on the Janka scale. The wood is also fragrant [7] with hints of nutmeg and cinnamon (also a member of the ...
The name sapele comes from that of the city of Sapele in Nigeria, where there is a preponderance of the tree.African Timber and Plywood (AT&P), a division of the United Africa Company, had a factory at this location where the wood, along with Triplochiton scleroxylon, Obeche, mahogany, and Khaya was processed into timber which was then exported from the Port of Sapele worldwide.