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The Janka hardness test (English: / ˈ dʒ æ ŋ k ə /; [1] German:), created by Austrian-born American researcher Gabriel Janka (1864–1932), measures the resistance of a sample of wood to denting and wear. [citation needed] It measures the force required to embed an 11.28-millimeter-diameter (7 ⁄ 16 in) steel ball halfway into a sample of ...
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 ...
Red oak rings in at a 1290 on the Janka scale (the higher the number, the stronger the board), and white oak comes in at 1360. Durability: Thanks to the wood’s open grain, wood stains take ...
Iroko, African teak (Milicia excelsa) Ironwood. Balau (Shorea spp.) American hornbeam (Carpinus caroliniana) Sheoak, Polynesian ironwood (Casuarina equisetifolia) Giant ironwood (Choricarpia subargentea) Diesel tree (Copaifera langsdorffii) Borneo ironwood (Eusideroxylon zwageri) Lignum vitae. Guaiacwood (Guaiacum officinale) Holywood (Guaiacum ...
The Brinell scale; The Janka hardness test; The Rockwell scale; The Durometer scale; The Barcol scale; The Leeb rebound hardness scale; The Rosiwal scale; The Meyer ...
Teak (Tectona grandis) is a tropical hardwood tree species in the family Lamiaceae. It is a large, deciduous tree that occurs in mixed hardwood forests.
Vickers hardness test; Brinell scale This page was last edited on 16 November 2024, at 12:16 (UTC). Text is available under the Creative Commons ...
Its wood has a similar feel and similar tonal attributes to genuine rosewoods, but is near 1000 points softer on the Janka hardness scale on average or more than all of the commonly traded species of rosewood except for Sisso and Amazonian rosewood (Dalbergia spruceana). It also ranks lower in density of 5-10 lbs per cubic foot compared to ...