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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 ...
Print/export Download as PDF; Printable version; In other projects Wikidata item; ... The Brinell scale; The Janka hardness test; The Rockwell scale; The Durometer scale;
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 ...
Durability: Cherry dents easily at a 950 on the Janka scale (which measures relative hardness of particular wood species), so limit it to areas like bedrooms and protect with rugs. Price Point ...
Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... Mohs scale of mineral hardness; Mohs hardness of materials (data page)
Hardness Testing. Vickers hardness test (HV), which has one of the widest scales; Brinell hardness test (HB) Knoop hardness test (HK), for measurement over small areas; Janka hardness test, for wood; Meyer hardness test; Rockwell hardness test (HR), principally used in the USA; Shore durometer hardness, used for polymers; Barcol hardness test ...
The wood is very hard, measuring 5.6 on the Brinell scale and 2,350 lbf (10,500 N) on the Janka scale, approximate measurements of hardness. For comparison, Douglas fir measures 660 lbf (2,900 N), white oak 1,360 lbf (6,000 N), and Brazilian walnut 3,800 lbf (17,000 N) on the Janka scale. It features a tan to salmon color with black accent ...
Both kinds of wood are hard (with a Janka hardness of 550 lbf (2,400 N)), but the western yellow pine wood is less dense than southern yellow pine wood (28 lb/cu ft (0.45 g/cm 3) versus 35 lb/cu ft (0.56 g/cm 3) for shortleaf pine).