 |
| TRADE NAME |
: |
NIANGON |
| SCIENTIFIC NAME |
: |
Heritiera utilis Kosterm.
(= Tarrietia utilis Sprague)
Heritiera densiflora Kosterm.
(= Tarrietia densiflora Aubr. & Normand)
|
| FAMILY |
: |
Sterculiaceae |
 |
| REGIONAL DISTRIBUTION |
: |
West Africa - Central Africa *
Sierra Leone : YAMI
Liberia : WHISMORE
Ivory Coast : NIANGON
Ghana : NYANKOM
Gabon : OGOUE
* Mainly H. densiflora
Pr. = FAIRLY IMP. (Decreasing) Ex. = FAIRLY IMP., REGUL.
|
|
| SAPWOOD |
: |
White to greysih-white, demarcated, 7 cm |
| HEARTWOOD |
: |
|
- Colour : Pink brown to red brown, darkening on exposure
- Grain : Slightly interlocked
- Texture : Medium
- Silver figure : Large
- Oily feel : Rancid smell
|
|
| TECHNOLOGICAL PROPERTIES |
- Green weight (kg/m3) = 900 - 1000
- Specific gravity at 12% M.C. (kg/m3) MV12 = (medium) 700
- Volumetric swelling for 1% MC variation V% = (medium) 0.44
- Total tangential swelling T% = 9.7
- Total radial swelling R% = 4.4
- Crushing strength (N/mm2) C12 = 55
- Static bending strength (N/mm2) F12 = 144
- Modulus of elasticity (N/mm2) E12 = 11500
|
|
| END USE |
- Interior and exterior joinery
- High-class furniture
- Plywood
- Interior fittings
|
|
| REMARKS |
- Natural durability : Moderate
- Lyctus susceptibility : No
- Preservative treatment : Resistant
- Other remarks :
- An alternate for MENKULANG for some end-uses.
- OGOUE from Gabon is heavier.
|
