The Janka hardness test provides an object method to compare the hardness of various wood flooring materials. It involves measuring the force required to embed a 11.28 millimeter (0.444 inch) steel ball into wood to half its diameter. This method was chosen so that the result would leave an indention 100 square millimeters in size. It is one of the best measures of the ability of a wood species to withstand denting and wear. It is also a good indicator of how hard a species is to saw or nail.  The harder the wood, the longer it lasts and holds up to wear. The following is the hardness of the woods carried at Metro Flooring.

Species	Hardness		Species	Hardness		Species	Hardness
African Ebony	3220		Carribean Rosewood	3170		Patagonian Rosewood	2800
African Hickory	1820		Chinese Hickory	1820		Pearwood	2990
African Kempas	1710		Crassiflora	3220		Pecan	1820
African Merbau	1925		Dark Rosewood	2300		Pine	870
African Paduak	1725		Ebony	3220		Pyinkado	1950
African Rosewood	1780		Ebonya Walnut	3684		Red Oak	1290
African Sapele	1510		Elm	800		Rojo Mahogany	2200
Afzelia	1810		Erable	1450		Rosewood	1650
Amendoim	1912		European Teak	1155		Santos Mahogany	2200
American Cherry	950		Havea	1820		Sao Paulo Striped Wood	2160
Applewood	880		Heart Pine	870		Sapele	1510
Argentinian Chestnut	2670		Hevea	1820		Simianping	3170
Ash	1320		Hickory	1820		Spanish Mahogany	1400
Asian Teak	1155		Hickory/Pecan	1820		Sucupira	2140
Asian Walnut	1010		Huali	3170		Tadenia	1570
Bamboo	1180		Ipe	3684		Taheebo	3060
Beech	1300		Iroko	1260		Tanzinia Msindi	3220
Bijuga	1925		Ironwood	2890		Tatabu	2140
Birch	1260		Joemoek	1925		Tauri	880
Black Walnut	1010		Kayu Kuku	1925		Teak	1155
Bolivian Teak	1155		Kempas	1710		Tectona	1155
Brazilian Cherry	2350		Lapacho	3060		Tiete Chestnut	1155
Brazilian Chesnut	1155		Larch	870		Tiete Rosewood	3200
Brazilian Hickory	2160		Lebombo	2890		Tigerwood	2160
Brazilian Mahogany	1400		Maduro Chestnut	2670		Timborana	1570
Brazilian Oak	1912		Mahogany	1400		Waka	1980
Brazilian Rosewood	3200		Maple	1450		Walnut	1010
Brazilian Walnut	3684		Merbau	1925		Wenge	1630
Bubinga	1980		Merisier	1260		West Indies Walnut	1925
Burma Teak	1950		Natural Mahogany	1500		White Oak	1360
Burmese Striped Wood	1575		Nigerian Bosulu	1725		Yellow Birch	1260
Cabrueva	2200		Noyer	1010		Zebrawood	1575
Cabrueva Vermelha	2350		Oak	1360		Zelkova	800
Carribean Mahogany	1570		Oscure Tigerwood	2160
Carribean Pecan	1820		Paduak	1725