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Xanthostemon verdugonianus, commonly known as mangkono or Philippine ironwood, is a species of plant in the family Myrtaceae. [2] It is endemic to the islands of the Visayas, Palawan, and northeastern Mindanao. It is valued for its extremely durable and heavy timber. It is threatened by habitat loss.
Krugiodendron ferreum, commonly known as the black ironwood or leadwood, is a species of tree in the family Rhamnaceae. It is found in southern Florida, throughout the Caribbean and from southern Mexico to Honduras. [2] Originally described by Martin Vahl, its specific epithet is the Latin adjective ferreus ("iron-like"). [3]
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.
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 ...
It is moderately hard and strong. It is used for door and window frames, and carts. Ironwood, Penaga Lilin, Bosneak, Gangaw, Mesua Mesua ferrea: Reddish brown [5] 960–1,060 kg/m 3: 1,620–1,790 lb/cu yd [6] Ironwood is durable though it is very hard and is not easily worked. It even resists penetration of nails.
At 206.7 square miles (535 km 2), the island of Isle Royale itself is the third largest island in the contiguous United States (after Long Island and Padre Island) and is the fourth largest lake island in the world. Isle Royale National Park has a total area of 894 square miles (2,320 km 2), of which 209 square miles (540 km 2) is land.
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 ...
The reddish wood is very similar in strength and weight to that of Black Walnut (Juglans nigra), with a specific gravity of 0.55, [9] and is now sought for use in wood carving and furniture. [6] Koa is also a tonewood , [ 15 ] often used in the construction of ukuleles , [ 16 ] acoustic guitars , [ 17 ] and Weissenborn -style Hawaiian steel ...