White oak (Quercus alba)
Family: Fagaceae
Common names: Arizona oak, Arizona white oak, Cucharillo, Encino, Encino negro, Mamecillo, Oak, Roble, Roble amarillo, Roble colorado, Roble encino, Roblecito, Stave oak, White oak
Distributed in: Canada, United States (North America)
Distribution overview: The geographical distribution of the White oaks, which include White oak (Q. alba), Chestnut oak (Q. prinus), Chingkapin oak (Q. muehlenbergii), Swamp chestnut oak (Q. michauxii), Swamp white oak (Q. bicolor), Bur oak (Q. macrocarpa), Post oak (Q. stellata), California white oak (Q. lobata), and Oregon white oak (Q. garryana), in North America includes Ontario, Quebec, Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, Great Smoky Mountain National Park, Iowa, Illinois, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, Wisconsin, and West Virginia. It is usually found in pure stands and prefers moist, well-drained upland and lowland areas.The so-called classic White oak (Q. alba), grow from Maine to Texas in the United States.
Product sources: Although commercial white oak consists of several species in the white oak group, Q. alba is the primary and most important source of timber in the group. White oak veneers are plentiful, and supplies of lumber are also abundant. Price of lumber is moderate, compared to other hardwoods.
Environment profile: Widespread
Tree size: Trunk diameter is 100-150 cm
Colors: the heart isVariable in color , Yellowand the sapwoodWhitish to light brown , Width varies .The grain isOpen , the textureMedium to coarse
Natural durability: Heartwood has high resistance to decay , Very durable
Odor: No specific smell or taste
Kiln Schedules: US=Upland T4-C2/T3-C1
Drying Defects: Ring failure, Surface checks
Ease of Drying: Slowly
Blunting Effect: Moderate dulling effect on cutting edges
Boring: Very good to excellent results
Carving: Fair to Good Results
Cutting Resistance: Generally medium but is variable
Gluing: Satisfactory gluing properties
Mortising: Very good mortising qualities
Moulding: Difficult moulding qualities
Number of moulded pieces yielding good top excellent out of one hundred = 35
Movement in Service: Difficult moulding qualities
Number of moulded pieces yielding good top excellent out of one hundred = 35
Nailing: Pre-boring recommended, Wood is hard
Planing: good
Resistance to Abrasion: Highly resistant to wear
Resistance to Impregnation: Sapwood is moderately resistant
Response to hand tools: Responds Readily
Timber from slow-growth white oak trees are softer and are easier to work with hand tools
Routing recessing: Very Good to Excellent Results
Sanding: Responds well
Veneering qualities:
Quartered veneers are often flake figured, while the very popular straight-line figure is a prominent feature in rift-cut veneer
Steam bending: Very Good to Excellent Results
Screwing: Good screwing properties, Pre-boring recommended; Turning: Very good
Staining: Fairly Difficult to Very Difficult
Reaction between tannins and liquid from some products, especially those with high water content such as bleach and water-based finishes, may turn the wood green or brown.
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- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
0,59 |
0,67 |
|
Density |
|
|
kg/m3 |
Bending Strength |
571 |
1016 |
kg/cm2 |
Crushing Strength |
46 |
73 |
kg/cm2 |
Hardness |
|
604 |
kg |
Impact Strength |
104 |
91 |
cm |
Shearing Strength |
|
137 |
kg/cm2 |
Stiffness |
86 |
122 |
1000 kg/cm2 |
Tangential Shrinkage |
10 |
|
% |
Radial Shrinkage |
5 |
|
% |
Weight |
961 |
721 |
kg/m3 |
Maximum Load |
0,77 |
1,05 |
cm-kg/cm3 |
Toughness |
|
|
cm-kg |
Static Bending |
254 |
330 |
kg/cm2 |
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| | | | Item | Green | Dry | English | Bending Strength | 8134 | 14455 | psi | Crushing Strength | 657 | 1049 | psi | Hardness | | 1333 | lbs | Impact Strength | 41 | 36 | inches | Maximum Crushing Strength | 3489 | 7291 | psi | Shearing Strength | | 1960 | psi | Static Bending | 3626 | 4704 | psi | Stiffness | 1225 | 1744 | 1000 psi | Work to Maximum Load | 11 | 15 | inch-lbs/in3 | Specific Gravity | 0.59 | 0.67 | | Weight | 60 | 45 | lbs/ft3 | Radial Shrinkage | 5 | | % | Tangential Shrinkage | 10 | | % | Volumetric Shrinkage | 16 | | % | |
Wear resistance is outstanding Low stiffness Crushing strength = medium Bending strength (MOR) = medium
Working properties are reported to differ with the rate of growth of the tree: slow grown trees are easier to work with hand and machine tools. Faster growing southern trees are reported to produce harder timber than the slower growing Appalachian trees.
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, Wisconsin.California 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.HMSO, 1981. Handbook of Hardwoods, 2nd Edition. Revised by R.H. Farmer. Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Princes Risborough, Aylesbury, BuckinghamshireJackson, 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.1989. Wood of the Month:White Oak - Our Biggest Export is Popular Here Too.Wood & Wood Products, July, 1989.Page 76.Kaiser, J. 1994. Wood of the Month: Oaks Loom in designs, Folklore and Symbolism. Wood and Wood Products, November, 1994. Page 52.Kline, M. 1981. Quercus alba - White oak. In A Guide to Useful Woods of the World. Flynn Jr., J.H., Editor. King Philip Publishing Co., Portland, Maine. 1994. Page 302-303.Little, E.L.1980.The Audubon Society Field Guide to North American Trees - Eastern Region.Published by Arthur A. Knopf, New York.NWFA.1994..Wood Species Used in Wood Flooring.Technical Publication No. A200.National Wood Flooring Association, Manchester, MO.Panshin, A.J. and C. deZeeuw. 1980. Textbook of Wood Technology, 4th Edition. McGraw-Hill Series in Forest Resources. McGraw-Hill Book Company, New York.USDA. 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.
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