The Janka scale is used to determine the relative hardness of particular domestic or exotic wood species. The Janka test measures the amount of force required to embed a 0.444" steel ball into the wood to half of its diameter. Woods with a higher rating are harder than woods with a lower rating. The scale used in the table is pounds-force. Janka Specie Name 350 Buckeye Burl 380 Aspen 410 Basswood 470 Guanacaste (Parota) 490 Butternut 540 American Chestnut 540 Poplar 540 Mappa Burl 600 Spanish Cedar 800 Genuine Mahogany 850 Quilted Western Maple 850 Western Maple Burl 850 Curly Western Maple 850 Black Ash 891 Lacewood 930 Anigre 950 Cherry 950 Curly Maple (Red Leaf) 950 Cherry Burl 950 Maple (Red Leaf) 950 Curly Cherry 950 Tornillo 960 Peruvian Walnut 1010 Walnut 1020 Holly 1055 Curly Pyinma 1100 African Mahogany 1100 Figured Mango 1160 Thuya Burl 1170 Koa 1200 Redheart 1200 Masur Birch 1210 Nicaraguan Rosewood 1220 Red Oak 1220 Curly Oak 1220 Quarter Sawn Red Oak 1220 Spalted Oak 1260 Birch 1260 Flame Birch 1260 Birch Burl 1260 Amboyna Burl 1260 Curly Narra 1260 Narra 1294 Figured Makore 1294 Makore 1320 White Ash 1320 Curly White Ash 1320 Swamp Ash 1330 Shedua 1335 Quarter Sawn White Oak 1335 White Oak 1350 Ebiara 1360 English Brown Oak 1400 Mayan Walnut 1400 Eucalyptus 1439 Quilted Sapele 1450 Birdseye Maple 1450 Hard Maple 1450 Curly Maple (Hard Maple) 1450 Quarter Sawn Maple 1450 Bark Pocket Maple 1450 Hard Maple Burl 1450 Spalted Maple 1450 Rift Sawn Hard Maple 1460 Madrone Burl 1500 Sapele 1520 Canarywood 1548 Honey Locust 1560 Afrormosia 1712 Merbau 1780 Black & White Ebony 1800 Camphor Bush Burl 1800 Figured Camphor Bush 1810 Afzelia Burl 1820 Hickory 1830 Zebrawood 1830 Figured Zebrawood 1860 Jarrah Burl 1878 Yellowheart 1900 Red Palm 1930 Wenge 1960 Bolivian Rosewood 1970 Padauk 1970 Ziricote 2010 Bocote 2020 Black Palm 2140 Sucupira 2150 Leopardwood 2160 Goncalo Alves 2200 Chechen 2200 Honduras Rosewood 2200 Honduras Rosewood Burl 2250 Chakte Viga 2318 Spalted Tamarind 2400 Osage Orange (Argentine) 2400 Santos Mahogany 2410 Figured Bubinga 2410 Quilted Bubinga 2410 Bubinga 2430 Cochen Rosewood 2430 Indian Ebony 2440 E. Indian Rosewood 2480 Tamboti 2490 Red Mallee Burl 2490 Brown Mallee Burl 2500 Tulipwood 2520 Purpleheart 2520 Figured Purpleheart 2532 Marblewood 2620 Amazon Rosewood 2690 Jatoba 2690 Olivewood 2700 Granadillo 2760 Osage Orange (USA) 2900 Bloodwood 2920 Yellow Box Burl 2960 Cocobolo 3000 Mun Ebony 3080 Gaboon Ebony 3080 Royal Ebony 3160 Angelim Pedra 3220 Macassar Ebony 3230 Pink Ivory 3330 Cumaru 3340 Kingwood 3340 Camatillo 3370 Grey Box Burl 3390 Mopani 3590 Brown Ebony 3660 Katalox 3660 Figured Katalox 3670 African Blackwood 3690 Brazilian Ebony 3710 Lignum Vitae (Argentine) 3730 Red Coolibah Burl 3800 Snakewood 4380 Lignum Vitae (Genuine)