The timber is a Medium Hardwood with a density of 500-945 kg/m3 air dry. The timber is moderately durable (A. integer and A. lanceifolius) to non-durable (A.dadah, A. heterophyllus and A. rigidus)
Other name: Artocarpus asperulus
The Standard Malaysian Name for the heavy timbers of Artocarpus spp. (Moraceae). Vernacular names applied include bangkong(Peninsular Malaysia), keledang (Peninsular Malaysia) with various epithets, terap hutan (Sabah) and various other localised names too numerous to list here. Major species include A. anisophyllus, A. dadah, A. heterophyllus, A. integer, A. kemando, A. lanceifolius and A. rigidus. The sapwood is light yellow to yellow-brown, sharply defined from the heartwood, which is brown or orange-brown and turns to dark brown on exposure.
Also known as Aini, Chaplash, Kathal(India); Anubing (Philippines); Del, Jak and Kanangonna (Sri Lanka); Ham, Hang and Kapiak(Papua New Guinea); Hat, Kha Num Pan, Khanun and Ma Hat (Thailand);Hat mi, Mai nang and Mi nang(Laos); Keledang (Brunei); Keledang, Kelembi, SelangkingTambang and Tempunik (Indonesia); Mit-nai (Vietnam); Myauklok (Myanmar).
AIR DRYING
The timber dries moderately slowly. 13 mm thick boards take 3 months to air dry, while 38 mm thick boards take 4 months. The timber dries with minor defects like slight surface- and end-checking. Some insect attacks were noted in A. rigidus during drying.
KILN-DRYING
Kiln Schedule F is recommended.
Kiln Schedule F
|
Moisture Content (%) |
Temperature (Dry Bulb) |
Temperature (Wet Bulb) |
Relative Humidity (%) (approx.) |
||
|
° F |
° C |
° F |
° C |
||
|
Green |
120 |
48.5 |
111 |
44 |
75 |
|
60 |
120 |
48.5 |
109 |
43 |
70 |
|
40 |
125 |
51.5 |
109 |
43 |
60 |
|
30 |
130 |
54.5 |
109 |
43 |
50 |
|
25 |
140 |
60.0 |
115 |
46 |
45 |
|
20 |
155 |
68.0 |
124 |
51 |
40 |
|
15 |
170 |
76.5 |
136 |
58 |
40 |
SHRINKAGE
Shrinkage is low, the average radial shrinkage from green to air dry is 0.9% and the tangential shrinkage is 2.2%.
