Taiwan zelkova (Zelkova formosana)
Family: Ulmaceae
Common names: Taiwan zelkova
Common uses: Agricultural implements, Boat building (general), Cabinetmaking, Carvings, Flooring: commercial heavy traffic, Furniture, Handles: general, Heavy construction, Joinery, Ladders, Mine timbers, Musical instruments, Plywood, Poles, Railroad ties, Sporting Goods, Vehicle parts, Veneer: decorative
Tree size: Tree height is 0-10 m
Colors: the heart isWhite, Yellowand the sapwoodWell defined, White to yellow.The grain isStraight, the textureMedium to coarseand the lusterLustrous
Natural durability: Very durable
Drying Defects: Slight twist/warp
Ease of Drying: Easy
Comments: General finishing qualities are rated as good
Cutting Resistance: Cutting Resistance with dry wood is easy
Gluing: Moderate gluing properties
Nailing: Easy to nail, Holds nails well
Response to hand tools: Easy to Work
Screwing: Screwing yields good results
;
Painting: Good; 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 |
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929 |
kg/m3 |
Bending Strength |
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kg/cm2 |
Crushing Strength |
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kg/cm2 |
Hardness |
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kg |
Impact Strength |
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cm |
Shearing Strength |
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kg/cm2 |
Stiffness |
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1000 kg/cm2 |
Tangential Shrinkage |
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% |
Radial Shrinkage |
5 |
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% |
Weight |
913 |
737 |
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 | Density | | 58 | lbs/ft3 | Weight | 57 | 46 | lbs/ft3 | Radial Shrinkage | 5 | | % | Tangential Shrinkage | 8 | | % | |
Shrinkage, Tangential = moderate Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Shrinkage, Radial = large Shrinkage, Radial = fairly large Density (dry weight) = 61-67 lbs/cu. ft Density (dry weight) = 53-60 lbs/cu. ft
Kanehira, R.,1921,Anatomical Characteristics and Identification of Formosa woods,Govt. of Formosa, TaihokuKeating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1
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