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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 ...
Hardwood from deciduous species, such as oak, normally shows annual growth rings, but these may be absent in some tropical hardwoods. [3] Hardwoods have a more complex structure than softwoods and are often much slower growing as a result. The dominant feature separating "hardwoods" from softwoods is the presence of pores, or vessels. [4]
Its wood has an average crush strength of 8,140 lb/in 2 (56.1 MPa), which exceeds many hardwoods such as white ash (7,410 lb/in 2) and black maple (6,680 lb/in 2). It is not as strong as black ironwood (9,940 lb/in 2 ), but because its average density is less than half that of ironwood, slash pine has a far greater strength-to-weight ratio.
This is a list of woods, most commonly used in the timber and lumber trade. Soft woods (coniferous) Araucaria. ... National Hardwood and Lumber Association;
Specifically, it refers to lumber cut for industrial or wood-packaging use. Lumber is cut by ripsaw or resaw to create dimensions that are not usually processed by a primary sawmill. Re-sawing is the splitting of 1-to-12-inch (25–305 mm) hardwood or softwood lumber into two or more thinner
Wood is relatively light in weight, because its specific weight is less than 500 kg/m 3, this is an advantage, when compared against 2,000–2,500 kg/m 3 for reinforced concrete or 7,800 kg/m 3 for steel. [citation needed] Wood is strong, because the efficiency of wood for structural purposes has qualities that are similar to steel. [citation ...
Mahogany is a commercially important lumber prized for its beauty, durability, and color, and used for paneling and to make furniture, boats, musical instruments and other items. The leading importer of mahogany is the United States, followed by Britain; [ 1 ] while the largest exporter today is Peru , which surpassed Brazil after that country ...
Pitch pine is rapid-growing when young, gaining around one foot of height per year under optimal conditions, until growth slows at 50–60 years. By 90 years of age, the amount of annual height gain is minimal. Open-growth trees begin bearing cones in as little as three years, with shade-inhabiting pines taking a few years longer.