Hardwood Durability

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Hardwood Durability

Some enviroments, like homes with large dogs, resturants, retail stores, would benefit from installing a hardwood that is denser to reduce surface straches. The Janka hardness test measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an 11.28 mm (.444 in) steel ball into wood to half the ball's diameter. This method leaves an indentation. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. The Janka Hardness test results tabulated below were done in accordance with ASTM D 1037-12 testing methods. Lumber stocks tested ranges from 1" to 2" thick. The tabulated Janka Hardness numbers are an average. There is a standard deviation associated with each species, but these values are not given. It is important to note no testing was done on actual flooring. Other factors affect how flooring performs: the type of core for engineered flooring such as pine, HDF, poplar, oak, birch; grain direction and thickness; floor or top wear surface, etc. The chart is not to be considered an absolute; it is meant to help people understand which woods are harder than others.

Janka Hardness      
Species (pounds-force) Species (pounds-force)
Eastern White Pine 380 Tasmanian oak 1350
Basswood 410 White Oak 1360
Western White Pine 420 Australian Cypress 1375
Hemlock 500 Natural Bamboo (represents one species) 1380
Chestnut 540 Caribbean Walnut 1390
Alder (Red) 590 Hard maple, Sugar Maple 1450
Douglas Fir 660 Sweet Birch 1470
Southern Yellow Pine (Loblolly and Shortleaf) 690 Zebrawood 1575
Silver Maple[8] 700 Rosewood 1780
Sycamore 770  Australian Wormy Chestnut 1810
Parana 780 Hickory, Pecan, Satinwood 1820
Mahogany, Honduran Mahogany 800 Goncalo Alves, Tigerwood 1850
African Mahogany 830 Brazilian Koa 2160
Southern Yellow Pine (Longleaf) 870 Santos Mahogany, Honduran Rosewood 2200
Eastern Red Cedar 900 Golden Teak 2330
Paper Birch 910 Mesquite 2345
Red Maple[6] 950 Brazilian Cherry, Jatoba 2350
Cherry 995 Spotted Gum 2473
Black Walnut, North American Walnut 1010 Southern Chestnut 2670
Peruvian Walnut 1080 Live Oak 2680
English Oak [5] 1120 Red Mahogany, Turpentine 2697
Teak 1155 Strand Woven Bamboo 3000
Carbonized Bamboo (represents one species) 1180  Brazilian Redwood, Paraju 3190
Carapa guianensis, Brazilian Mesquite 1220 Ebony 3220
Heart pine 1225 Brazilian Chestnut, Tiete Chestnut 3417
Yellow Birch, Iroko 1260 Cumaru, Brazilian Teak 3540
Caribbean Heart Pine 1280 Bolivian Cherry 3650
Red Oak (Northern) 1290 Brazilian Walnut,  3684
Ash (White) 1320 Brazilian Ebony 3692

 

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