| Note: |
F a s t - growing species; woods presently commercialized come from plantations. |
|
|
| LOG DESCRIPTION |
WOOD DESCRIPTION |
|
|
| Diameter: |
from 30 to 60 cm |
Colour: |
Brown |
| Thickness of sapwood: |
from to cm |
Sapwood: |
Clearly demarcated |
| Floats: |
yes |
Texture: |
Medium |
| Durability in forest : |
Low (must be treated) |
Grain: |
Straight |
| |
|
Interlocked grain: |
Absent |
| Note: |
Heart rot is common for some origins. Heartwood light brown, sometimes with olive brown shades. |
|
|
| PHYSICAL PROPERTIES |
MECHANICAL PROPERTIES |
| Physical and mechanical properties are based on mature heartwood specimens. These properties can vary greatly depending on |
| origin and growth conditions. |
|
|
|
| |
mean |
standard deviation |
|
mean |
standard |
| Density * |
0.52g/cm3 |
0.05 |
|
|
deviation |
| Monnin hardness*: |
3.1 |
|
Crushing strength *: |
46MPa |
|
| Coef of volumetric shrinkage: |
0.37% |
|
|
|
|
| Total tangential shrinkage: |
7.0% |
|
Static bending strength *: |
105MPa |
|
| Total radial shrinkage: |
3.1% |
|
Modulus of elasticity *: |
10800MPa |
|
| Fibre saturation point: |
25% |
|
|
|
|
| Stability: |
stable |
|
( * : at 12 % moisture content ; 1 MPa = 1 N/mm2 ) |
| Note: |
As it is frequently observed for many plantation species, physical and mechanical properties of |
| |
this wood hardly vary and depend on origin and trees age. |
|
|
| NATURAL DURABILITY AND TREATABILITY |
| Fungi and termite resistance refers to end-uses under temperate climate. |
| Except for special comments on sapwood, natural durability is based on mature heartwood. |
| Sapwood must always be considered as non-durable against wood degrading agents. |
|
|
| Fungi: |
Class 3-4 moderately to poorly durable |
| * ensured by natural |
| durability (according |
| EN standards). |
|
|
| Dry wood borers: |
Susceptible |
| Termites: |
Class S - Susceptible |
| Treatability: |
2 - moderately permeable |
| Biological hazard class*: |
2 - not in ground contact, under cover (dampness possible) |
|
|
| COUNTRIES - LOCAL NAMES |
|
| Countries |
Local names |
|
|
|
|
| Australia |
BLACK WATTLE |
|
|
| Australia |
BROWN SALWOOD |
|
|
| Indonesia |
MANGGE HUTAN |
|
|
| Indonesia |
TONGKE HUTAN |
|
|
| Papua New Guinea |
ARR |
|
|
| Peninsular Malaysia |
KAYU SAFODA |
|
|
| Thailand |
KRA THIN TEPA |
|
|
| United Kingdom |
BLACK WATTLE |
|
|
| United Kingdom |
BROWN SALWOOD |
|
|
| U.S.A. |
BLACK WATTLE |
|
|
| U.S.A. |
BROWN SALWOOD |
|
|
|
|
|
|
|
| ACACIA MANGIUM |
|
| REQUIREMENT OF A PRESERVATIVE TREATMENT |
|
| Against dry wood borer attacks: |
Requires appropriate preservative treatment |
| In case of temporary humidification risk: |
Requires appropriate preservative treatment |
| In case of permanent humidification risk: |
Use not recommended |
|
|
| DRYING |
Possible drying schedule |
|
|
| Drying rate: |
Rapid |
|
Temperature (°C) |
Air |
| Risk of distortion: |
High risk |
M.C. (%) |
dry-bulb |
wet-bulb |
humidity (%) |
| Risk of casehardening: |
No |
|
| Risk of checking: |
High risk |
Green |
42 |
39 |
82 |
| Risk of collapse: |
No |
50 |
48 |
43 |
74 |
| |
|
40 |
48 |
43 |
74 |
| |
|
30 |
48 |
43 |
74 |
| |
|
15 |
54 |
46 |
63 |
|
| This shedule is given for information only and is applicable to thickness < 38 mm. |
| It must be used in compliance with the code of practice. |
| For thickness from 38 to 75 mm , the air relative humidity should be increased by 5 % at each step. |
| For thickness over 75 mm , a 10 % increase should be considered. |
|
| SAWING AND MACHINING |
|
| Blunting effect: |
Normal |
| Sawteeth recommended: |
Ordinary or alloy steel |
| Cutting tools: |
Ordinary |
| Peeling: |
No information available |
| Slicing: |
No information available |
| Note: |
Planned surfaces are glossy. |
|
|
| ASSEMBLING |
|
| Nailing / Screwing: |
Poor |
| Gluing: |
Correct |
| Note: |
Good gluing with phenol resins, difficult wiyh urea-formol resins. |
|
|
| END-USES |
| Main known end-uses; they must to be implemented according to the code of practice. |
| Important remark: some end-uses are mentionned for information (traditional, regional or ancient end-uses). |
|
| Pulp |
| Fiber or particle boards |
| Current furniture or furniture components |
| Interior joinery |
| Interior panelling |
| Blockboard |
| Formwork |
| Boxes and crates |
|
|
