Variegated Apple (Syzygium jambosoides)
Family: Myrtaceae
Common names: Variegated Apple, Yasi yasi
Distributed in: Australia, Fiji (Oceania and S.E. Asia)
Common uses: Bedroom suites, Building construction, Building materials, Cabin construction, Cabinetmaking, Chairs, Chests, Concealed parts (Furniture), Construction, Crossties, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Factory construction, Factory flooring, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Kitchen cabinets, Living-room suites, Millwork, Mine timbers, Moldings, Office furniture, Parquet flooring, Radio - stereo - TV cabinets, Railroad ties, Rustic furniture, Stools
Environment profile: Status has not been officially assessed
Tree size: Tree height is 30-40 m
Colors: the heart isReddish brown, Yellowand the sapwoodPaler than heartwood, Yellow.The grain isOften interlocked, irregular, or wavy , the textureModerately fine and uniform and the lusterSlightly lustrous
Natural durability: Moderately durable, Moderately resistant to decay
Odor: No specific smell or taste
Drying Defects: Slight cupping, Slight end splitting
Ease of Drying: Weighting stacks at the beginning of seasoning is recommended
Comments: The genus Syzygium is represented by a large number of species which are grouped and marketed collectively as PNG Water gum. The largest representation of species in the genus is in the forests of Papua New Guinea. As might be expected, there is a wide variation in mechanical and physical properties, especially in density within the group. General mechanical and physical properties are presented here for the group. It should be noted that although the information is indicative of the properties of the group, it should be used with the understanding that individual species properties may differ significantly
Blunting Effect: Interlocked slightly to moderately
Boring: Material with interlocked grain requires sharp cutting edges
Cutting Resistance: Easy to saw
Gluing: Good gluing characteristics
Nailing: Possible if prebored, Splitting is frequent near edge of board
Planing: Planes well, to a good finish
Resistance to Impregnation: Sapwood is permeable
Response to hand tools: Moderate blunting effect on cutting edges
Sanding: The sanding finish is generally good
Veneering qualities: Some water gum logs are sliced into decorative veneers
Steam bending: Moderate
Polishing: Good; Staining: Stains well;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
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| Item |
Green |
Dry |
Metric |
| Specific Gravity |
|
|
|
| Density |
|
641 |
kg/m3 |
| Bending Strength |
668 |
1343 |
kg/cm2 |
| Crushing Strength |
331 |
709 |
kg/cm2 |
| Hardness |
|
671 |
kg |
| Impact Strength |
|
|
cm |
| Shearing Strength |
|
167 |
kg/cm2 |
| Stiffness |
141 |
162 |
1000 kg/cm2 |
| Tangential Shrinkage |
|
|
% |
| Radial Shrinkage |
|
|
% |
| Weight |
|
|
kg/m3 |
| Maximum Load |
|
|
cm-kg/cm3 |
| Toughness |
|
84 |
cm-kg |
| Static Bending |
|
|
kg/cm2 |
|
 |  |  |  | | Item | Green | Dry | English | | Bending Strength | 9501 | 19110 | psi | | Density | | 40 | lbs/ft3 | | Hardness | | 1480 | lbs | | Maximum Crushing Strength | 4719 | 10094 | psi | | Shearing Strength | | 2381 | psi | | Stiffness | 2019 | 2313 | 1000 psi | | Toughness | | 73 | inch-lbs | | Specific Gravity | 0.54 | | | |
Resists denting and marring Hardness = medium Density = high Compression strength (parallel to grain) = high Bending strength (MOR) = very high
The species has very high bending strength, and is much stronger than Teak in the air-dry condition (about 12 percent moisture content). It resists denting and marring about as well as white oak or birch
Bolza, E., Kloot, N. H. 1963. The Mechanical Properties of 174 Australian Timbers. Technological Paper No. 25. Division of Forest Products, Center for Scientific and Industrial Organization (CSIRO, Melbourne, AustraliaEddowes, P. J. 1961. Commercial Timbers of Papua New Guinea - Their Properties and Uses. Office of Forests, Department of Primary Industry, Forest Products Research Center, Papua New Guinea.
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