| physical Properties |
 |
Ulin |
Kwila |
Selangan
Batu 111 |
Selangan
Batu 110 |
| wood shrinkage |
airdry at(%) |
2.300 |
3.000 |
3.860 |
4.540 |
| airdry ar(%) |
1.160 |
1.400 |
1.240 |
1.810 |
| airdry al(%) |
0.050 |
0.210 |
0.030 |
0.020 |
| av. at(%) |
0.402 |
0.310 |
0.444 |
0.455 |
| at. ar(%) |
0.221 |
0.161 |
0.189 |
0.249 |
| at. al(%) |
0.005 |
0.010 |
0.007 |
0.009 |
| ovendry av(%) |
12.540 |
11.300 |
14.210 |
16.070 |
| ovendry at(%) |
8.190 |
7.500 |
10.260 |
11.070 |
| ovendry ar(%) |
4.440 |
3.800 |
4.040 |
5.470 |
| ovendry al(%) |
0.130 |
0.370 |
0.140 |
0.150 |
| water absorption |
cross(mg/cm2day) |
20.0 |
141.0 |
-999 |
-999 |
| tangential(mg/cm2day) |
20.0 |
50.0 |
-999 |
-999 |
| radial(mg/cm2day) |
10.0 |
27.0 |
-999 |
-999 |
| static bending |
modulus of elasticity
(Gpa) |
8.34 |
16.08 |
18.14 |
22.85 |
proportional limit
(Mpa) |
102.80 |
101.60 |
88.40 |
105.60 |
bending strength
(Mpa) |
185.00 |
157.30 |
156.40 |
172.70 |
wood durability
(weight loss) |
Tyromyces palustris(sapwood) (%) |
0.0 |
20.9 |
0.0 |
2.4 |
Tyromyces palustris
(heartwood) (%) |
0.0 |
0.3 |
0.0 |
0.0 |
Coriolus versicolor
(sapwood) (%) |
1.8 |
15.5 |
0.0 |
4.8 |
Coriolus versicolor
(heartwood) (%) |
0.2 |
0.0 |
0.0 |
0.0 |
Pynoporus coccinus
(sapwood) (%) |
0.7 |
16.9 |
0.9 |
2.8 |
Pynoporus coccinus
(heartwood) (%) |
0.1 |
0.0 |
1.0 |
1.4 |
| sawing by band saw |
sawing rate (m2/min) |
0.8 |
-999 |
-999 |
-999 |
| kiln drying |
drying rate |
-999 |
-999 |
1.5 |
2.0 |
| drying time |
40.0 |
-999 |
25.0 |
27.0 |
| cuting by rotating knife |
cutting force (N/cm2) |
18.4 |
22.1 |
26.3 |
26.8 |
| knife life (1300) |
1300 |
1500 |
-999 |
-999 |
| chemic. Charactoeristic |
ash (%) |
-999 |
0.99 |
0.40 |
0.80 |
| holocellulose (%) |
-999 |
64.30 |
69.50 |
62.60 |
| alpha cellulose (%) |
-999 |
41.40 |
50.00 |
46.10 |
| ligning (%) |
-999 |
29.40 |
28.70 |
27.50 |
| extractive |
n-hexane (%) |
-999 |
0.46 |
1.25 |
0.60 |
| ether (%) |
-999 |
0.24 |
4.63 |
3.10 |
| aceton (%) |
-999 |
5.42 |
7.05 |
3.94 |
| methanol (%) |
-999 |
5.20 |
2.44 |
2.46 |
| total (%) |
-999 |
11.32 |
15.37 |
10.11 |
| Fiber board |
specific strength
(Mpa) |
44.60 |
52.00 |
30.40 |
27.90 |
mpact bending strength
(J/cm2) |
1.13 |
1.35 |
0.58 |
0.66 |
tensil strength
(Mpa) |
37.70 |
31.20 |
15.20 |
14.30 |
water absorption
(%) |
73.20 |
34.80 |
20.50 |
39.80 |
hardness
(Kpa) |
166.70 |
-999 |
117.70 |
127.50 |
| physical Properties |
|
Ulin |
Kwila |
Selangan
Batu 111 |
Selangan
Batu 110 |
