Niove

niove

TRADE NAME : Niove

SCIENTIFIC NAME : Staudtia kamerunensis Warb

  • BOTANICAL DESCRIPTION : The tree reaches a height of 23 to 32 m. The bole is cylindrical, straight and clear to 20 m in length, sometimes with a swollen base. The trunk diameter attains 100 cm.
  • NATURAL HABITAT :Staudtia kamerunensis occurs in mixed forests, in large stands, as well as in secondary forests.
  • NATURAL DISTRIBUTION : West Africa in Gabon, Cameroon, Republic of the Congo and in the Democratic Republic of the Congo.

GENERAL WOOD DESCRIPTION

COLOR INDEX (1=BLACK,7=LIGHT YELLOW,WHITE) 4
  • ODOR:  Light and pleasant odor.
  • COLOR: The sapwood is pale yellow to orange yellow, it has a thickness of 8 cm. The heartwood is yellow brown to reddish brown, with darker streaks, it is clearly demarcated. The silver figure is medium.
  • GRAIN: Straight; grain has no particular influence on drying, machining and finishing qualities.
  • TEXTURE: This species is usually reported to have a fine texture.
  • LUSTER: This wood is commonly of moderate luster.
  • NATURAL DURABILITY: Very durable to decay; without preservative treatment. This species is especially suited for all the uses with risks of permanent or long-lasting humidification. Resistant to termites attack. Heartwood is resistant to Lyctus attacks. NATURAL DURABILITY INDEX (1= VERY HIGH DURABILITY,7=VERY LOW DURABILITY)1
  • INTERNAL GROWTH STRESSES: No residual stresses are reported in this species.
  • SILICA CONTENT : Negligible contents of silica are found in timber of this species. Amounts over 0.050/s may affect the wood processing. Silica Value: 0.01
  • RESISTANCE TO IMPREGNATION: Nearly impossible to treat with a too much low penetration of the preservative substances.

WOOD PHYSICAL PROPERTIES

  • BASIC DENSITY OR SPECIFIC GRAVITY (O.D. WEIGHT/VOL. GREEN) (G/CM°) 0.78 AIR-DRY DENSITY (WEIGHT AND VOLUME AT 120/oM ) (G/CM°)0.89
    TOTAL SHRINKAGE TANGENTIAL (SATURATED TO 00/oM ) (0/o)6.2 TOTAL SHRINKAGE RADIAL (SATURATED TO 00/oM ) (0/o)5.1
  • DRYING DEFECTS : Ease of Drying: Drying is moderately easy; some particular care is needed.
  • Drying Defects: Risks of distortions.
  • Kiln Schedules: The kiln schedule has been tested.
  • RECOMMENDED DRY KILN SCHEDULE : FR-11 DIMENSIONAL STABILITY RATIO (TOTAL TANGENTIAL SHRINKAGE 0/o/TOTAL RADIAL SHRINKAGE 0/o)1.2

WOOD MECHANICAL PROPERTIES

  • BENDING STRENGTH (MOR),12 0/oM (KGF/CM2 ) 1557 STIFFNESS (MOE) 120/oM (KGF/CM2 )188065
  • COMPRESSION PARALLEL TO FIBER 120/oM (KGF/CM2 )923
  • COMPRESSION PERPENDICULAR TO FIBER 120/oM (KGF/CM2 )141
  • SHEAR STRENGTH RADIAL 120/oM (KGF/CM2 )88 JANKAHARDNESS (SIDE) 120/oM (KGF)987 JANKAHARDNESS (END GRAIN) 120/oM (KGF)1035

WORKABILITY

  • SAWING : Sawing of this species requires powerful equipment.
  • ROTARY VENEER CUTTING : Suitable for slicing. SLICED VENEER : Suitable for slicing.
  • BLUNTING EFFECT : Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
  • MACHINING : It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
  • PLANING : Moderately easy; tools must be cautiously sharpened.
  • MOULDING : Rather difficult; special tools are needed. TURNING : 30
  • BORING : Rather difficult; special tools are needed. MORTISING : Rather difficult; special tools are needed. NAILING : Pre-boring is necessary.
  • GLUING : Difficult to glue because of high density. SANDING : Easy to perform; it gives good results. POLISHING : Can be polished without surface preparation.
  • RESPONSE TO HAND TOOLS : Working with hand tools is difficult.

END USES

  • HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, boat hulls, boat deck, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts