Hardness Test

Janka Hardness Test

The Janka Hardness is a measure that calculates the pounds of force it takes to drive a .44” diameter steel ball 1/2 its depth into wood. The higher the number recorded, the harder the wood is deemed to be. Bamboo Industries Strand Woven Bamboo has tested as second hardest of all woods.

Walnut Brazilian Tabebuia, spp 3680
Strand Woven Bamboo Bamboo 3625
Teak Brizilian Dipteryx, odorata 3540
Cherry, Bolivian Manilkara, bidentata 3190
Cherry, Caribbean Lonchocarpus, castilloi 3100
Tamarind Dialium, guianense 3000
Bloodwood Brosimum, rubescens 2900
Cherry Brazilian Hymenaea, courbaril 2820
Rosewood Patagonia Piptadenia Macrocarpan 2800
Rosewood Tiete Guibourtia, chodatianal 2800
Walnut, Patagonian Tabebuia, heptaphylla 2800
Chestnut, Southern Sweetia, Panamensis 2670
Rosewood Caribbean Metopium browneii 2300
Brushbox, Northern Tristania, spp <2245
Mahogany, Santos Myroxylon, balsamum 2200
Rosewood Honduran Dalbergia, Stevensonii 2200
Tigerwood Astronium, spp 2160
Purpleheart Peltogyne, spp 2090
Gum, Sydney Blue Eucalptus, saligna 2025
Bubinga Guibourtia,demeusei 1980
Merbau Intsia,spp 1925
ewood, Bolivian Machaerium, sclieroxylon 1780
Doussie Afzelia spp 1770
Padauk,African Pterocarpus, soyauxii 1725
Jarrah Eucalyptus, malaccensis 1710
Shedua/Mutenye Guibourtia,arnoldiana 1650
Wenge Milletia, laurentii 1630
Zebrawood Microberlina, brazzavillensis 1575
Timborana Piptadenia, suaveolens 1570
Afrormosia Pericopsis, elata 1560
Maple,Patagonian Balfourodendron, riedelianum 1500
Vertical Bamboo Bamboo 1480
Ash, Silky Couratari, spp 1460
Mahogany,Royal Pitchecellobium, arboreum 1400
Walnut, Caribbean Lysiloma, bahamensis 1400
Cypress,Australian Callitrus,  glauca 1375
Amendoim Pterogune, nitens 1340
Horizontal,Bamboo Bamboo 1320
Beech, European Fagus, slyvatica 1300
Angelique Dicorynia, guianensis 1290
Ash, Victorian Eucalyptus, delegtensis 1290
Iroko/Kambala Chloraohora, excelsa 1260
Teak True Tectona, grandis 1155
Walnut Peruvian Juglans neotropica 1080
Cherry,Chilean Nothofagus, dombeyi 990
Pine, Heart Pinus, caribaea 910
Lacewood Roupala, brasiliensis 840
Mahogany,Honduran Swietenia macrophylla 800
Chestnut Castanea, sativa 540