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Red alderRed alder
Red alder (Alnus rubra)

Family: Betulaceae

Common names: Alder, Oregon alder, Pacific coast alder, Red alder, Western alder, Western red alder

Distributed in: Canada, United States (North America)

Distribution overview: Red alder is confined to the Pacific Coast region from southeast Alaska to southern California.Although there is an isolated population growing along streams in northern Idaho, it ordinarily occurs no further inland than 100 miles (160 km) at elevations below 2,500 feet (762 m).Red alder is cultivated in Hawaii.

Common uses: Bedroom suites, Bent Parts, Boxes and crates, Building materials, Cabinetmaking, Candlesticks, Canoes, Carvings, Chairs, Charcoal, Chests, Concealed parts (Furniture), Core Stock, Desks, Dining-room furniture, Dowell pins, Dowells, Drawer sides, Fine furniture, Floor lamps, Fuelwood, Furniture , Furniture components, Furniture squares or stock, Furniture, Handles: general, Hatracks, Interior construction, Interior trim, Joinery, Kitchen cabinets, Living-room suites, Millwork, Office furniture, Pallets, Paneling , Paneling, Plywood corestock, Plywood, Pulp/Paper products, Radio - stereo - TV cabinets, Rustic furniture, Stools, Tables , Toys, Turnery, Umbrella handles , Utility furniture, Veneer, Veneer: decorative, Wainscotting, Wardrobes

Product sources: Sawn lumber is imported into the United Kingdom (UK) from the European Continent. Trees grown in the UK are harvested at the pole stage. The timber of A. glutinosa is very difficult to defferentiate from that of A. incana .

Environment profile: Widespread

Tree size: Tree height is 40-50 m

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureUniform

Natural durability: Suitable for marine applications, Susceptible to attack by fungi

Odor: No specific smell or taste

Kiln Schedules: T10 - D4 (4/4) T8 - D3 (8/4) US/T10 - D4 (4/4) T8 - D3 (8/4) US

Drying Defects: Discoloration, No surface checking

Ease of Drying: Reconditioning Treatement

Tree Identification: Bole/stem form is straight

Comments: General finishing qualities are rated as good

Blunting Effect: Little

Boring: Fair to good results

Carving: Fairly Easy to Very Easy

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Gluing: Very Good to Excellent Results

Mortising: Finishes well

Moulding: Poor to Very Poor

Movement in Service: Poor to Very Poor

Nailing: Poor to Very Poor , Very Good to Excellent

Planing: Planes well, to a good finish

Resistance to Impregnation: Sapwood is permeable

Resistance to Splitting: Good

Response to hand tools: Responds well to hand tools

Routing recessing: Routing is easy

Sanding: Fairly Easy to Very Easy

Veneering qualities: Veneers easily, Veneers moderately easy

Steam bending: Very good

Screwing: Screwing yields good results, Very Good to Excellent Results; Turning: Good results

Painting: Very Good to Excellent; Polishing: Satisfactory; Staining: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,3 0,29
Density 448 kg/m3
Bending Strength 472 748 kg/cm2
Crushing Strength 21 35 kg/cm2
Hardness 246 kg
Impact Strength 58 43 cm
Shearing Strength 77 kg/cm2
Stiffness 98 115 1000 kg/cm2
Tangential Shrinkage 6 %
Radial Shrinkage 3 %
Weight 544 432 kg/m3
Maximum Load 0,42 0,56 cm-kg/cm3
Toughness cm-kg
Static Bending 241 406 kg/cm2
Item Green Dry English
Bending Strength 6726 10652 psi
Crushing Strength 299 500 psi
Density 28 lbs/ft3
Hardness 543 lbs
Impact Strength 23 17 inches
Maximum Crushing Strength 3039 5533 psi
Shearing Strength 1105 psi
Static Bending 3430 5782 psi
Stiffness 1403 1643 1000 psi
Work to Maximum Load 6 8 inch-lbs/in3
Specific Gravity 0.3 0.29
Weight 34 27 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 6 %
Volumetric Shrinkage 12 %

Shrinkage, Tangential = moderate
Shrinkage, Radial = moderate
Hardness (side grain) = very soft
Density (dry weight) = 31-37 lbs/cu. ft.
Density (dry weight) = 23-30 lbs/cu. ft.
Bending strength (MOR) = low
Max. crushing strength = medium
Max. crushing strength = low
Toughness-Hammer drop (Impact Strength) = very low
Shrinkage, Tangential = very small
Shrinkage, Tangential = small
Shrinkage, Radial = very small
Shrinkage, Radial = small
Hardness (side grain) = soft
Bending strength (MOR) = medium

Boone, R.S., C.J. Kozlik, P.J. Bois and E.M. Wengert. 1988. Dry Kiln Schedules for Commercial Woods: Temperate and Tropical. United States Department of Agriculture, Forest Service, Forest Products Laboratory, General Technical Report FPL-GTR-57, Madison, WisconsinBrown, H.P. and Panshin, A.J.,1940,Commercial Timbers of the United States Their structure, identification,,properties and uses,McGraw-Hill, LondonBrown, W.H.,1978,Timbers of the World: - No.7 North America,TRADACalifornia Department of Forestry.Comparative Physical & Mechanical Properties of Western & Eastern Hardwoods.Prepared by Forest Products Laboratory, University of California at Berkeley, Berkeley, California.n/d.Canadian Forestry Service. 1981.Canadian Woods - Their Properties and Uses. Third Edition. E.J. Mullins and T.S. McKnight, Editors. Published by University of Toronto Press, Toronto, Canada.Harrar, E.S.,1942,Some Physical Properties of Modern Cabinet Woods 3. Directional and Volume,Shrinkage,Tropical Woods,9(71, pp26-32Howard, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.I.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer CuttingJackson, A. and D. Day.1991.Good Wood Handbook - The Woodworker's Guide to Identifying, Selecting and Using the Right Wood.Betterway Publications, Cincinnati, Ohio.Kaiser, J.Wood of the Month - Red Alder.Wood and Wood Products, July 1986. Page 56.Kline, M. 1987. Alnus rubra - Red alder. In A Guide to Useful Wood of the World, Flynn Jr., J.H., Editor. King Philip Publishing Co., Portland, Maine. 1994. Page 34-35.Lincoln, W.A. 1986. World Woods in Color. Linden Publishing Co. Inc. Fresno, California.Little, E.L.1980.The Audobon Society Field Guide to North American Trees - Western Region.Published by Arthur A. Knopf, New York.Markwardt, L.J., Wilson, T.R.C.,1935,Strength and related properties of woods grown in the United States,U.S.A. Department of Agriculture Technical Bulletin,No.479Mullins, E.J. and McKnight, T.S.,1981,Canadian Woods Their Properties and Uses,University of Toronto Press 3rd EditionNiemiec, S.S., G.A. Ahrens, S. Willits, and D.E. Hibbs. March, 1995. Hardwoods of the Pacific Northwest. Oregon State University, College of Forestry,Research Contribution 8, Forest Research Laboratory, Department of Forest Products, Corvallis, Oregon.Panshin, A.J. and C. deZeeuw. Textbook of Wood Technology. McGraw-Hill Series in Forest Resources. McGraw-Hill Book Company, New York.Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressPlank, M.E.,1971,American Woods - Red Alder,USDA Forest Service American woods FS-215Record, S.J., Hess, R.W.,1943,Timbers of the New World,Yale University PressRijsdijk, L.F. and Laming, P.B.,1994,Physical and Related Properties of 145 Timbers, Information for,Practice,TNO Building and Construction Research Centre for Timber Research Kluwer,Academic PublishersStone, H.,1924,The Timbers of Commerce and their Identification,William Rider & Sons Ltd. LondonTimber Development Association Ltd.,1955,World Timbers (3 Vols.,Timber Development Association Ltd.Titmuss, F.H.,1965,Commercial Timbers of the World,Technical Press Ltd., London, 3rd editionU.S.D.A. Forest Service,1974,Wood Handbook,U.S.A. Department of Agriculture, Forest Service Handbook,72USDA. 1987. Wood Handbook:Wood as an Engineering Material. Agriculture Handbook No. 72. United States Department of Agriculture, Forest Service, Madison, Wisconsin.USDA. 1988. Dry Kiln Operators Manual, Preliminary Copy. Forest Service, Forest Products Laboratory, Madison, Wisconsin.Western Wood Products Association.19__.Woods of the Western USA.Published and distributed by the Western Wood Products Association, Yeon Building, 522 S.W. Fifth Avenue, Portland, Oregon.
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