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Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Boring Comments Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Family Name Gluing Grain Heartwood Color Kiln Drying Rate Luster Mortising Moulding Nailing Natural Durability Numerical Data Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Screwing Staining Strength Properties Synonyms Texture Trade Name Tree Identification Tree Size Turning Veneering Qualities Scientific Name Parkia javanica Trade Name Aripa Family Name Leguminosae Synonyms Parkia roxburghii Common Names Aripa, Bagin, Belian landak, Bullisan, Kedaung, Kerayong, Kupang, Kuyug, Maganhok, Petai, Petai kerayong, Petai meranti, Porcupine belian, Riang, Sator Regions of Distribution Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Brunei, India, Indonesia, Papua New Guinea, Philippines Common Uses Boat building (general), Boxes and crates, Canoes, Fuelwood, Heavy construction, Joinery, Light construction, Matches, Millwork, Plywood, Posts, Pulp/Paper products Heartwood Color Brown Red Pink Yellow Purple Black Orange Yellow to golden-yellow to orange Pale brown Sapwood Color White Yellow Brown Red Green/Grey White to yellow Same as heartwood Grain Interlocked Straight Even Interlocked Straight Texture Medium Fine Coarse Coarse Medium coarse to coarse Luster Low Lustrous Natural Durability Moderately durable Durable Susceptible to insect attack Non-durable Perishable Resistant to powder post beetles Non-resistant to powder post beetles Sapwood is susceptible to wood staining fungal attack Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Perishable Susceptible to attack from termites (Isoptera) Heartwood is susceptible to wood staining fungal attack Non durable Drying Defects Checking Distortion Ease of Drying Slowly Kiln Drying Rate Naturally dries slowly Naturally dries at a moderate speed Tree Identification Bole/stem form is buttressed Tree Size Sapwood width is 5-10 cm Tree height is 20-30 m Tree height is 30-40 m Trunk diameter is 100-150 cm Comments General finishing qualities are rated as good Boring Fairly easy to very easy Cutting Resistance Easy to saw Fairly Difficult to Very Difficult to saw Moderate to saw Cutting Resistance with dry wood is easy Gluing Fairly Easy to Very Easy Mortising Fairly Easy to Very Easy Moulding Fairly Easy to Very Easy Nailing Fairly Easy to Very Easy Pre-Boring Recommended Planing Fairly Easy to Very Easy Poor to Very Poor Results Fair to Good Results Fairly Difficult to Very Difficult Very Good to Excellent Results Resistance to Impregnation Resistant heartwood Resistant sapwood Response to Hand Tools Fairly Difficult to Difficult to Work Easy to Work Easy to machine Screwing Fairly Easy to Very Easy Turning Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Veneering Qualities Veneers easily Veneers moderately easy Suitable for peeling Easy to cut Suitable for peeling Polishing Fair to Good Results Staining Staining (Characteristic) = coloured water-soluble extract Strength Properties Density (dry weight) = 31-37 lbs/cu. ft. Density (dry weight) = 23-30 lbs/cu. ft. Shrinkage, Tangential = very small Shrinkage, Tangential = small Shrinkage, Radial = very small Shrinkage, Radial = small Shearing strength (parallel to grain) = low Modulus of Elasticity (stiffness) = very low Max. crushing strength = medium Hardness (side grain) = soft Bending strength (MOR) = low Numerical Data Item Green Dry English Bending Strength 6111 9589 psi Density 30 lbs/ft3 Hardness 995 lbs Maximum Crushing Strength 3916 6397 psi Shearing Strength 1560 psi Stiffness 1017 1199 1000 psi Weight 29 25 lbs/ft3 Radial Shrinkage 2 % Tangential Shrinkage 5 % Item Green Dry Metric Bending Strength 429 674 kg/cm2 Density 480 kg/m3 Hardness 451 kg Maximum Crushing Strength 275 449 kg/cm2 Shearing Strength 109 kg/cm2 Stiffness 71 84 1000 kg/cm2 Weight 464 400 kg/m3 Radial Shrinkage 2 % References Browne, F.G.,1955,Forest Trees of Sarawak and Brunei and their Products.,Government Printing Office, Kuching, Sarawak Cortes, R.T., Nambananda, P.,1947,Fibre lenght of Anilau (Columbia serratifolia) Hinlaumo (Mallotus,ricinoides) and Kupang (Parkia javanica,Philippine Journal of Forestry 5(1) pp50-70 Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15 Kraemer, J.H.,1951,Trees of the Western Pacific Region,West Lafayette, Indiana U.S.A. Ramesh, Rao K., Purkayastha, S.K.,1972,Indian Woods - Their Identification Properties and Uses,Dehra Dun India,Vol. 3 Reyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7 Sono, P.,1974,Merchantable Timbers of Thailand.,Forest Products Research Division, Royal Forest Department, Bangkok,,Thailand.