Janka Hardness Test
Janka Hardness is a test which measures the pounds of force it takes to drive a .44” diameter steel ball half its depth into wood. These numbers are taken from various publications but principally are from the U.S. Forest Products lab. The higher the number, the harder the species.
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Domestic Species – to North America |
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Flooring Trade Name
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Botanical Name
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Hardness - Janka
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Ash, White
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Fraxinus, excelsior
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1320
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Cherry, N. American
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Prunas, serotina
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950
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Maple, N. American
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Acer, saccharum
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1450
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Oak, Red
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Quercus, rubra
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1260
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Oak, White
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Quercus, alba
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1360
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Walnut, N. American
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Juglans, nigra
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1010
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Imported Species – to North America |
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Flooring Trade Name
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Botanical Name
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Hardness - Janka
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Horizontal Bamboo
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Phyllostachis Pubescens (Moso)
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1320
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Vertical Bamboo
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Phyllostachis Pubescens (Moso)
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1480
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Strand Woven
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Phyllostachis Pubescens (Moso)
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3625
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Ash, Victorian
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Eucalyptus, delegatensis
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1010
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Beech, European
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Fagus, slyvatica
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1300
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Bloodwood
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Brosimum, rubescens
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2900
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Brush box, Northern
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Tristania, spp
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2045
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Bubinga
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Guibourtia, demeusei
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1980
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Cherry, Brazilian
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Hymenaea, courbaril
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2820
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Cherry, Caribbean
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Lonchocarpus, castilloi
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3100
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Cherry, Mayan/Aztec
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Lonchocarpus, castilloi
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3100
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Cherry, Patagonian
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Guibourtia, chodatianal
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2800
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Chestnut, Brazilian
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Dipteryx, odorata
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3540
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Chestnut, Southern
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Sweetie, panamensis
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2670
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Cypress, Australian
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Callitrus, glauca
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1375
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Doussie
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Afzelia, spp
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1770
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Goncalo Alves
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Astronium, spp
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2160
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Gum, Sydney Blue
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Eucalyptus, saligna
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2025
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Iroko/Kambala
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Chloraphora, excelsa
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1260
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Kempas
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Koompassia, malaccensis
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1710
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Lacewood
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Roupala, brasiliensis
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840
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Mahogany, Royal
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Pithecellobium, arboreum
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1400
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Mahogany, Santos
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Myroxylon, balsamum
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2200
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Mahogany, Honduran
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Swietenia, macrophylla
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800
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Maple, Brazilian
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Balfourodendron, riedelianum
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1500
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Maple, Patagonian
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Balfourodendron, riedelianum
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1500
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Merbau
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Intsia, spp
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1925
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Merbau, Southern
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Pithecellobium, arboreum
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1400
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Oak, Tasmanian
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Eucalyptus, regnans/oblique
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1010
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Padauk, African
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Pterocarpus, soyauxii
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1725
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Purpleheart
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Peltogyne, spp
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2090
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Rosewood, Bolivian
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Machaerium, sclieroxylon
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1780
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Rosewood, Caribbean
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Metopium, browneil
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2300
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Rosewood, Honduran
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Dalbergia, Stevensonij
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2200
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Rosewood, Patagonian
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Piptadenia, macrocarpa
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2800
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Rosewood, Tiete
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Guibourtia, chodatianal
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2800
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Shedua/Mutenye
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Guibourtia, amoldiana
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1650
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Tamarind
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Dialium, guianense
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3000
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Teak, Brazilian
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Dipteryx, odorata
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3540
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Teak, True
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Tectona, grandis
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1155
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Tigerwood
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Astronium, spp
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2160
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Walnut, Brazilian
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Tabebuia, spp
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3680
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Walnut, Caribbean
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Lysiloma, bahamensis
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1400
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Walnut, Mayan/Aztec
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Lysiloma, bahamensis
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1400
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Walnut, Patagonian
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Tabebuia, heptaphylla
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2800
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Walnut, Peruvian
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Juglans, neotropica
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1080
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Wenge
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Milletia, laurentij
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1630
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Zebrawood
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Microberlina, brazzavillensis
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1575
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