Janka hardness is 730 pounds of force. Prices: Usually most common reactions simply include eye and skin irritation. Black Limba is an exotic wood from Africa Lumber is separated for color and sold as white (without black streaks) or black (with black streaks). Allergies/Toxicity: Although severe reactions are quite uncommon, Black Walnut has been reported as a sensitizer. Makore has the same properties and is known as the next level up in comparison to energies. Janka Hardness 670 lbf (2,990 N) Colour/Appearance Heartwood is a light yellowish to golden brown, sometimes with grey to nearly black streaks and veins. Black Limba. It is also a good indicator of how hard or easy a species is to saw or nail. Grain/ Texture: Grain is straight to slightly interlocked, with a uniformlly coarse texture. Janka Hardness: 670 lbf. Wood with such darker figuring is referred to as Black Limba, while plain unfigured wood is called White Limba. Appearance: Black Limba is gray brown and irregularly streaked with dark brown or black and has a satiny luster. Open pores require filling for a smooth surface. Medium coarse texture. The wood is relatively soft and easy to work. The Janka hardness test measures the lb/in2 required to embed a .444-inch steel ball to half its diameter in wood. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information. Woods with a higher rating are harder than woods with a lower rating. The wood of the Black Locust is one of the hardest in North America. The Janka test measures the amount of force required to embed a 0.444" steel ball into the wood to half of its diameter. It grows up to 180 ft. tall, with a domed or flat crown, and a trunk typically clear of … The Janka Side Hardness test measures the force required to press an 11.28mm (0.444 inch) steel ball to half its diameter cross-grain into a block of wood. This force is recorded in both pounds-force (lbf) and kilo-Newtons (kN). Natural Habitat - South Eastern United States Wood Hardness - 1700 It is also one of the few trees that grows well in urban areas as it can grow in poor soil conditions and can tolerate heavy levels of pollution. The grain varies from straight to irregular and inerlocked. Odor: Black Walnut has a faint, mild odor when being worked. The scale used in the table is pounds-force. Country(s) of Origin: Tropical Western Africa Colour: Heartwood is a light yellowish to golden brown, sometimes with grey to nearly black streaks. The Janka scale is used to determine the relative hardness of particular domestic or exotic wood species. However, read the description above for Black Limba. It is one of the best measures of the ability of a wood species to withstand denting and wear. 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black limba wood hardness

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