A Comparison of Species
Total Page：16
File Type：pdf, Size：1020Kb
A Comparison of Species DISTRIBUTED BY A Comparison of Species KEY Preferable Levels Acceptable Levels Level Property of Timber Preferable Levels Acceptable Levels Red Alder Hard Maple LYPTUS Red Oak Cherry White Oak Birch Poplar Yellow Mahogany Beech Soft Maple DISTRIBUTED BY Density at 12% MC 410 630 650 630 500 680 620 420 450 640 540 - kg/m3 –– -lb/ft3 26 39 40 39 31 42 38 26 28 39 34 Basic MOR at 12% MC 70 113 118 103 88 109 119 72 83 107 96 Properties - mPa – – - lb/in2 10000 16800 17000 14800 12600 15600 17100 10300 11800 15300 13800 Texture Fine to Medium Coarse Typically straight or shallowly Typically interlocked of which the Grain interlocked of which the general general direction is straight direction is straight Dimensional Movement Small Medium Abrasion Resistance High to Moderate Low Hardness High to Moderate Low Durability Natural Durability of Heartwood Moderate to Very Durable Non-durable (Decay) Treatability with Easily Treated Moderate Difficulty Resistance preservatives or fire retardants Drying Rate Rapid to Moderate Fairly slow to very slow Drying Tendency to checking during drying Absent or Controllable As Preferable Levels Tendency to distortion during drying Absent or Slight Moderate Machining Satisfactory As preferable levels but more difficult Machining Blunting Effect on Cutters Slight to Moderate Severe: acceptable when tipped cutters are used Sanding Very Good Satisfactory Paint Finishing Very Good Satisfactory Stain Finishing Very Good Satisfactory Finishing Acceptability depends on Tendency to Resin Exudation Absent or infrequent finish to be used and visual after drying standards required Gluing and Gluing Glues Easily Special Attention Required Fastening Nail and Screw holding High Moderate Tendency to Corrode Metals Absent Present: only if adequately protected fixings are used Miscellaneous Becomes stained in Absent Present: if visually acceptable or Properties contact with metals avoidable Staining of neighboring Absent Present: only if not objectionable materials by leaching color in particular situations Lyptus values from State University of New York (SUNY), USA. 1998. Other species values from: Wood Handbook; Wood as an Engineering Material Although every effort has been made to ensure that all data in this brochure is accurate, Weyerhaeuser shall not be responsible – USDA Forest Service 1972; Modern Cabinetmaking – Umsttad, W.D. and Davis, C.W. 2000; Textbook of Wood Technology – Panshin, A.J. 1949. for any injury, loss, damage or expense arising out of, or resulting from, the use of, or reliance upon that data. A COAST-TO-COAST Network No matter where you’re located in North America, there’s a Weyerhaeuser Customer Service Center nearby. Lyptus hardwood lumber and flooring is available at select Weyerhaeuser Customer Service Centers throughout North America. Locator information is available at www.weyerhaeuser.com/wbm or call toll free: United States 877-235-6873 • Canada 888-439-8822. DISTRIBUTED BY WEYERHAEUSER BUILDING MATERIALS United States: 877-235-6873 • Canada: 888-439-8822 www.weyerhaeuser.com/wbm Weyerhaeuser is a proud partner of the Wood Promotion Network™. FH 667 6/03 PAG Printed on recycled paper.