Elm (Eucryphia cordifolia)
Family: Eucryphiaceae
Common names: Elm, Gnulgu, Huermo, Muermo, Nirrhe, Roble de Chile, Ulmo
Distributed in: Chile (Latin America)
Common uses: Boat building (general), Boxes and crates, Bridge construction, Cabinetmaking, Flooring, Furniture, Heavy construction, Joinery, Light construction, Mine timbers, Oars, Piling, Plywood, Poles, Railroad ties, Turnery, Vehicle parts, Veneer
Tree size: Tree height is 30-40 m
Colors: the heart isReddish brown, Yellowand the sapwoodWhite, Yellow.The grain isStraight, the textureMediumand the lusterPronounced
Natural durability: Susceptible to insect attack, Very durable
Kiln Schedules: UK=B US=T2C2/T2C1 Fr=2
Kiln Drying Rate: Naturally dries slowly
Drying Defects: Severe surface checking, Severe twisting/warping
Ease of Drying: Slowly
Comments: General finishing qualities are rated as good
Boring: Fairly easy to very easy
Cutting Resistance: Fairly Difficult to Very Difficult to saw
Planing: Very Good to Excellent
Resistance to Impregnation: Sapwood is permeable
Response to hand tools: Moderate working qualities
Veneering qualities: Easy to cut, Suitable for peeling
Steam bending: Very good response to preservative treatment
Turning: Very Good to Excellent Results
Polishing: Good;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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Item |
Green |
Dry |
Metric |
Specific Gravity |
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Density |
|
641 |
kg/m3 |
Bending Strength |
542 |
849 |
kg/cm2 |
Crushing Strength |
317 |
499 |
kg/cm2 |
Hardness |
|
348 |
kg |
Impact Strength |
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cm |
Shearing Strength |
|
139 |
kg/cm2 |
Stiffness |
85 |
99 |
1000 kg/cm2 |
Tangential Shrinkage |
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% |
Radial Shrinkage |
4 |
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% |
Weight |
624 |
496 |
kg/m3 |
Maximum Load |
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cm-kg/cm3 |
Toughness |
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cm-kg |
Static Bending |
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kg/cm2 |
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| | | | Item | Green | Dry | English | Bending Strength | 7711 | 12078 | psi | Density | | 40 | lbs/ft3 | Hardness | | 769 | lbs | Maximum Crushing Strength | 4513 | 7107 | psi | Shearing Strength | | 1989 | psi | Stiffness | 1212 | 1409 | 1000 psi | Weight | 39 | 31 | lbs/ft3 | Radial Shrinkage | 4 | | % | Tangential Shrinkage | 9 | | % | |
Density (dry weight) = 38-45 lbs/cu. ft. 0 Shearing strength (parallel to grain) = medium Modulus of Elasticity (stiffness) = low Max. crushing strength = medium Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 31-37 lbs/cu. ft. Bending strength (MOR) = medium Bending strength (MOR) = low Modulus of Elasticity (stiffness) = very low Shearing strength (parallel to grain) = low Hardness (side grain) = soft Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Max. crushing strength = high Hardness (side grain) = very soft
Berni, C.A., Bolza, E., Christensen, F.J.,1979,South American Timbers - The Characteristics, Properties and Uses of 190,Species,C.S.I.R.O Div. Building ResearchBrown, W.H.,1978,Timbers of the World, No. 2 South America,TRADA, Red Booklet SeriesChilean Forestry News,1978,Chilean Woods Ulmo (Eucryphia cordifolia Cav,Chilean Forestry News (1)12 p.14Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Farmer, R.H.,1972,Handbook of Hardwoods,HMSOTakahashi, A.,1975,Compilation of data on the Mechanical Properties of Foreign Woods (Part 2,Central and South America,Shimane University, Japan, Research Report on Foreign Wood No.4Timber Development Association,1948,Some New Timbers and Their Uses No. 34,Timber Development Association Limited, London [TRADA]Woods, R.P.,1949,Timbers of South America,TRADA, Red Booklet Series
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