Kevazingo

PHYSICAL AND MECHANICAL PROPERTIES

These properties can vary significantly depending on the origin and growing conditions of the wood.

• Density *: 0.92
• Monnin hardness *: 10.2
• Coef. Volume shrinkage: 0.62%
• Stability in service: not very stable
• Total radial shrinkage: 5.5%
• Fiber saturation point: 24%
• Total tangential shrinkage: 7.9%

(*: 12% humidity)
Variable hardness: hard to very hard wood.

NATURAL DURABILITY AND IMPREGNABILITY OF WOOD

• Mushrooms: cl 2 – durable
• Insects of dry wood: durable; distinct sapwood (risk limited to sapwood)
• Termites: class D – durable
• Impregnability: 4 – not impregnable
• Biological risk class: 4 – in contact with soil or fresh water

SAWING AND MACHINING

• Blunting effect: quite significant
• Sawing toothing: stellate toothing
• Machining tools: tungsten carbide

Requires power. Some precautions to take in the presence of irregular thread.

ASSEMBLY

• Nailing – Screwing: good hold, pre-boring necessary
• Gluing: correct (interior only)

Gluing requires care (dry wood and good surface condition).

USES

• paneling
• parquet
• stairs
• turned items
• furniture
• interior and exterior carpentry
• sleepers
• vehicle or container bottom

Main known uses to be validated by implementation in compliance with the rules of the art. Important note: some uses are mentioned for information.

Source: CIRAD – ATIBT

REACTION TO FIRE

• French conventional classification: thickness> 14 mm: M.3 (moderately flammable) thickness <14 mm: M.4 (easily flammable)
• classification according to euroclasses: D s2 d0 This default classification concerns solid woods meeting the requirements of standard NF EN 14081-1 appendix C (May 2006), used in vertical walls. Namely structural timber, classified, with a minimum average density of 0.35 and a minimum thickness of 22 mm.