Haldu (Adina cordifolia)
Family: Rubiaceae
Common names: Ahnau, Arsanatega, Bandaru, Bangka, Bonglong, Da-kom, Dudagu, Gao, Haldu, Hardu, Hedde, Heddi, Hedu, Hnaw, Holonda, Honangi, Kadambu, Kadawar, Kaddam, Kaim, Kalamb, Kamada, Kan Luang, Kan-luang, Kanapu, Kanu, Karam, Keli-kadam, Kem, Kolon, Komba, Kovao, Kudwal, Kurmi, Kurumba, Kwao, Kwow, Manja-kadambu, Manjakadambe, Manjalkadambai, O-aw, Paspu, Paspu kadambe, Pelpuria, Petpuria, Phurkhona, Roghu, Rudraganapu, Rudrakadapu, Shangdong, Siamese kwao, Tarachapa, Tekoe, Thaing, Tikkoe, Uaspu mundi, Yeludijamaram, Yetega, Yettega, Yongmaw
Distributed in: Bhutan, Burma, Cambodia, China, India, Indonesia, Malaysia, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam (Oceania and S.E. Asia)
Distribution overview: India, Ceylon, Thailand, and Burma; scattered in mixed deciduous forests.
Common uses: Agricultural implements, Balusters, Baskets, Boat building (general), Bobbins, Boxes and crates, Brush backs & handles, Building construction, Building materials, Cabinetmaking, Canoes, Carvings, Chairs, Chests, Concealed parts (Furniture), Concrete formwork, Construction, Cooperages, Desks, Dining-room furniture, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Fine furniture, Floor lamps, Flooring, Food containers, Furniture , Furniture components, Furniture squares or stock, Furniture, Handles: general, Handles: woodworking tools, Hatracks, Heavy construction, Interior construction, Joinery, Kitchen cabinets, Light construction, Living-room suites, Mathematical instruments, Millwork, Mine timbers, Moldings, Musical instruments, Musical instruments: percussion, Musical instruments: piano, Musical instruments: strings, Office furniture, Paneling , Paneling, Parquet flooring, Plywood, Poles, Posts, Radio - stereo - TV cabinets, Rustic furniture, Shingles, Sporting Goods, Stairworks, Stools, Stringers, Sub-flooring, Tables , Tables, Textile equipment, Tool handles, Toys, Turnery, Vats, Vehicle parts, Veneer, Veneer: decorative
Environment profile: Globally secure
Tree size: Trunk diameter is 150-200 cm
Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWide sapwood, Yellow.The grain isWeak figure, the textureVery fine to fineand the lusterPronounced
Natural durability: Susceptible to attack from powder post (Lyctid & Bostrychid) beetles, Susceptible to insect attack
Odor: No specific smell or taste
LightInduced Color Change: Darker
Kiln Schedules: Kiln Drying Rate (in days) is fairly rapid
Kiln Drying Rate: Naturally dries slowly
Drying Defects: Slight twist/warp, Splitting
Ease of Drying: Slowly
Tree Identification: Bole/stem form is straight
Comments: Acid resistant General finishing qualities are rated as good Useful for manufacturing saunas, laboratory bench tops, and other applications where acid-resistance is needed
Carving: Good results
Cutting Resistance: Easy to saw
Gluing: Fairly Easy to Very Easy
Mortising: Very Good to Excellent
Moulding: Fairly Easy to Very Easy
Movement in Service: Fairly Easy to Very Easy
Nailing: Holds nails well, Very Good to Excellent
Planing: Very Good to Excellent
Resistance to Impregnation: Sapwood is permeable
Response to hand tools: Works well with hand tools
Sanding: Very Good to Excellent Results
Screwing: Screwing yields good results, Very Good to Excellent Results; Turning: Very Good to Excellent Results
Polishing: Very Good to Excellent; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
 |
 |
 |
 |
Item |
Green |
Dry |
Metric |
Specific Gravity |
0,53 |
0,56 |
|
Density |
|
673 |
kg/m3 |
Bending Strength |
664 |
847 |
kg/cm2 |
Crushing Strength |
372 |
514 |
kg/cm2 |
Hardness |
|
488 |
kg |
Impact Strength |
48 |
71 |
cm |
Shearing Strength |
|
93 |
kg/cm2 |
Stiffness |
76 |
96 |
1000 kg/cm2 |
Tangential Shrinkage |
7 |
|
% |
Radial Shrinkage |
3 |
|
% |
Weight |
721 |
673 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
|
cm-kg |
Static Bending |
|
|
kg/cm2 |
|
 |  |  |  | Item | Green | Dry | English | Bending Strength | 9446 | 12057 | psi | Density | | 42 | lbs/ft3 | Hardness | | 1076 | lbs | Impact Strength | 19 | 28 | inches | Maximum Crushing Strength | 5304 | 7315 | psi | Shearing Strength | | 1328 | psi | Stiffness | 1085 | 1374 | 1000 psi | Specific Gravity | 0.53 | 0.56 | | Weight | 45 | 42 | lbs/ft3 | Radial Shrinkage | 3 | | % | Tangential Shrinkage | 7 | | % | Volumetric Shrinkage | 9 | | % | |
Density (dry weight) = 38-45 lbs/cu. ft. 0 Max. crushing strength = medium Bending strength (MOR) = low Shrinkage, Radial = small Modulus of Elasticity (stiffness) = very low Shrinkage, Tangential = moderate Shearing strength (parallel to grain) = very low Hardness (side grain) = soft Bending strength (MOR) = medium Shrinkage, Tangential = large Shrinkage, Radial = fairly large Shearing strength (parallel to grain) = low Max. crushing strength = high Toughness-Hammer drop (Impact Strength) = low Shrinkage, Volumetric = small Shrinkage, Volumetric = moderate Shrinkage, Tangential = small Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Shearing strength (parallel to grain) = medium Resists denting and marring Modulus of Elasticity (stiffness) = low Heavy Hardness = medium Hardness (side grain) = very soft Hardness (side grain) = medium Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 31-37 lbs/cu. ft. Compression strength (parallel to grain) = high
Similar in many strength properties to Teak, White Oak, and Hard Maple
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