Of the European alders, only the black or red alder, botanically Alnus glutinosa<\/em>, provides commercially usable wood. The white or gray alder rarely grows into dimensions suitable for timber. The alders are widespread throughout Central and Eastern Europe as far as the Urals and the Caucasus. Alders are moderately well available. American alders from the west of the USA (Oregon, Washington) are also economically significant. Alders are readily available in Hesse.<\/p>\n Sapwood and heartwood not differentiated in color; wood ros\u00e9-colored, sometimes with a dark heartwood, often showing signs of decay due to brown rot towards the center of the trunk. Darkens to a rather uniform reddish brown in the light. Fine-pored, fine-textured, often parallel-grained, but also possible to grow in a curved pattern, overall plain, less decorative.<\/p>\n Density at u=12% is approx. 0.50 t\/m\u00b3 with a fluctuation range of 0.44-0.52 m\u00b3. The shrinkage from the fresh state to u=12% is specified as 6.2% tangential and 3.8% radial. Drying can be carried out without any problems. Easy and clean to work, resulting in uniformly smooth surfaces, excellent for polishing and staining. High dimensional stability. Furniture wood, turnery wood, musical instruments (electric guitar bodies).<\/p>\n Furniture wood, turnery wood, musical instruments (electric guitar bodies).<\/p>\n Europe, USA (Oregon, Washington)<\/p>\n High dimensional stability, easy and clean to process, uniformly smooth surfaces<\/p>\n Cites 2<\/p>\nWooden picture:<\/h5>\n
Properties:<\/h5>\n
\nThe Brinell hardness is specified as 16-17, the modulus of elasticity as approx. 9,600 N\/mm2<\/sup>. Alder is not weatherproof.<\/p>\nUse:<\/h5>\n
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\n<\/strong><\/td>\nGOTTWALD 1970: Wood identification of the most important commercial timbers
\nARGE Holz 1998: Native timber and its use<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nPicture 1: European alder
\nFigure 2: In comparison: Alder europ. \/ americ.<\/h4>\n<\/div>\n","protected":false},"excerpt":{"rendered":"Use<\/h3>\n
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Certification<\/h3>\n