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Blunting Effect
Common Names
Common Uses
Countries of Distribution
Drying Defects
Ease of Drying
Family Name
Gluing
Grain
Heartwood Color
Kiln Drying Rate
Luster
Mortising
Moulding
Movement in Service
Nailing
Natural Durability
Numerical Data
Polishing
References
Regions of Distribution
Resistance to Impregnation
Response to Hand Tools
Sanding
Sapwood Color
Scientific Name
Screwing
Silica Content
Staining
Strength Properties
Texture
Trade Name
Tree Size
Turning
Varnishing
Veneering Qualities
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Common Names
Keriung, Keruing mengkai
Regions of Distribution
Oceania and S.E. Asia
Countries of Distribution
[VIEW MAP]
Malaysia
Common Uses
Flooring, Heavy construction, Light construction, Poles, Railroad ties, Vehicle parts
Heartwood Color
| Brown |
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| Green/grey |
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| Red |
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| Yellow |
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| Purple |
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| Orange |
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| Reddish brown |
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| Dark brown |
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| Pale brown |
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Sapwood Color
| White |
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| Yellow |
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| Pink |
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| Red |
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| Brown |
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| Different than heartwood |
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| White to yellow |
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| Well defined |
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Grain
| Even |
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| Figure |
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| Straight |
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| Interlocked |
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| Distinct (figure) |
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| Weak (figure) |
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| Straight |
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| Weak figure |
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| Interlocked |
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| Distinct figure |
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Texture
| Medium |
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| Coarse |
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| Fine |
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| Coarse |
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Luster
Natural Durability
| Susceptible to insect attack |
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| Moderately durable |
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| Durable |
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| Non-resistant to powder post beetles |
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| Perishable |
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| Non-durable |
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| Non-resistant to termites |
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| Non-resistant to marine borers |
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| Resistant to powder post beetles |
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| Susceptible to attack from termites (Isoptera) |
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| Resistant to attack from powder post (Lyctid & Bostrychid) beetles |
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| Pinworms (ambrosia beetles) often present in the standing tree |
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| Pinworms (ambrosia beetles) may be present in the felled log |
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| Non durable |
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| Moderately durable |
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Silica Content
Drying Defects
| Distortion |
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| Checking |
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| Severe surface checking |
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| Severe end splitting |
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| Moderate twist/warp |
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| Moderate surface checking |
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| Moderate end spitting |
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Ease of Drying
Kiln Drying Rate
| Rapid |
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| Drying rate is fairly rapid to fast |
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Tree Size
| Sapwood width is 10-15 cm |
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| Trunk diameter is 100-150 cm |
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| Bole length is 20-30 m |
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| Bole length is 10-20 m |
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| Tree height is 40-50 m |
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| Tree height is 30-40 m |
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| Sapwood width is 5-10 cm |
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| Bark width is 5-10 mm |
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| Sapwood width is 0-5 cm |
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Blunting Effect
| Moderate |
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| Blunting effect on machining is moderate |
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Gluing
| Fairly Difficult to Very Difficult |
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| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Mortising
Moulding
Movement in Service
| Excellent Stability - Small Movement |
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Nailing
| Very Good to Excellent Results |
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| Fair to Good Results |
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Resistance to Impregnation
| Resistant heartwood |
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| Resistant sapwood |
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| Heartwood is permeable |
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Response to Hand Tools
Sanding
| Very Good to Excellent Results |
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| Fair to Good Results |
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| Good sanding finish |
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Screwing
| Very Good to Excellent Results |
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| Fair to Good Results |
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Turning
| Very Good to Excellent Results |
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| Fair to Good Results |
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Veneering Qualities
| Veneers easily |
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| Veneers moderately easy |
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| Suitable for peeling |
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| Suitable for slicing |
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Polishing
| Fair to Good Results |
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| Very Good to Excellent Results |
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Staining
Varnishing
| Very Good to Excellent Results |
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| Fair to Good Results |
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| Fairly Easy to Very Easy |
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Strength Properties
| Shrinkage, Tangential = large |
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| Shrinkage, Tangential = fairly large |
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| Shrinkage, Radial = moderate |
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| Shrinkage, Radial = fairly large |
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| Density (dry weight) = 61-67 lbs/cu. ft |
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| Density (dry weight) = 53-60 lbs/cu. ft |
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Numerical Data
| Item | Green | Dry | English |
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| Density | | 58 | lbs/ft3 |
| Weight | 57 | 46 | lbs/ft3 |
| Radial Shrinkage | 4 | | % |
| Tangential Shrinkage | 9 | | % |
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| Item | Green | Dry | Metric |
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| Density | | 929 | kg/m3 |
| Weight | 913 | 737 | kg/m3 |
| Radial Shrinkage | 4 | | % |
References
Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.
Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15
Fundter, J.M.,1982,Names for Dipterocarp timbers and trees from Asia,Pudoc, Wageningen, Netherlands
Thomas, A.V.,1948,Keruing Timber (Dipterocarpus spp.,Malayan Forester 11(4) pp153-6
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