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A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. For hardwood flooring, the test usually requires an 80 mm × 150 mm (3 in × 6 in) sample with a thickness of at least 6–8 mm, and the most commonly used test is the ASTM D1037.
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.
This is a list of Acacia species (sensu lato) that are used for the production of timber. Approximate wood densities of acacia species; Species Density [kg/m³]
The wood is extremely hard, being one of the hardest woods in Northern America with a Janka hardness test of 1,700 lbf (7,560 N) [46] and specific gravity of 0.733 (733 kilograms per cubic metre or 45.7 pounds per cubic foot).
Mohs hardness of materials (data page) Vickers hardness test; Brinell scale This page was last edited on ...
Acacia (Acacia sp., Robinia pseudoacacia) African padauk (Pterocarpus soyauxii) Afzelia, doussi (Afzelia africana) Agba, tola (Gossweilerodendron balsamiferum) Alder (Alnus) Black alder (Alnus glutinosa) Red alder (Alnus rubra) Ash (Fraxinus) Black ash (Fraxinus nigra) Blue ash (Fraxinus quadrangulata) Common ash (Fraxinus excelsior)
Vachellia seyal, the red acacia, known also as the shittah tree (the source of shittim wood), is a thorny, 6– to 10-m-high (20 to 30 ft) tree with a pale greenish or reddish bark. At the base of the 3–10 cm (1.2–3.9 in) feathery leaves, two straight, light grey thorns grow to 7–20 cm (2.8–7.9 in) long.
ASTM D2240 durometers allow for a measurement of the initial hardness, or the indentation hardness after a given period of time. The basic test requires applying the force in a consistent manner, without shock, and measuring the hardness (depth of the indentation). If a timed hardness is desired, force is applied for the required time and then ...
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