Koto

1.001.10 (-9%)

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Name: KOTO
Family: MALVACEAE
Scientific names: PTERYGOTA BEQUAERTII – PTERYGOTA MACROCARPA
Origin: AFRICA

WOOD DESCRIPTION

Reference color: creamy white
Sapwood: not distinct
Grain: medium Grain
: straight or counter-grain
Counter-grain: light

The tree sometimes has extensive buttresses. Creamy white to light yellow wood, attractive speckled appearance on quarter. Unpleasant odor when green.

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PHYSICAL AND MECHANICAL PROPERTIES

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

  • Density *: 0.59
  • Monnin hardness *: 2.5
  • Coef. Volume shrinkage: 0.57%
  • Stability in service: not very stable
  • Total radial shrinkage: 4.5%
  • Fiber saturation point: 25%
  • Total tangential shrinkage: 9.6%

(*: 12% humidity)

NATURAL DURABILITY AND IMPREGNABILITY OF WOOD

  • Mushrooms: cl 5 – not sustainable
  • Insects of dry wood: susceptible; sapwood little or not distinct (risk in all the wood)
  • Termites: class S – susceptible
  • Impregnability: class 1 – impregnable
  • Biological risk class: 1 – indoors (no risk of humidification)

This species is sensitive to bluing.

SAWING AND MACHINING

  • Blunting effect: normal
  • Teeth for sawing: ordinary or alloy steel
  • Machining tools: ordinary

Tendency to lint during machining. Good finish after filling.

ASSEMBLY

  • Nailing – Screwing: good hold
  • Gluing: correct

USES

  • sliced ​​veneer
  • interior carpentry
  • paneling
  • current furniture or elements
  • slatted panel
  • frame
  • light frame
  • seats
  • staircase
  • plywood face or back
  • molding
  • fiber or particle board
  • glulam
  • tabletterie
  • crate-packing

Koto veneers are often stained by steaming.
Main known uses to be validated by implementation in accordance 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 wood, classified, with a minimum average density of 0.35 and a minimum thickness of 22 mm.
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1.001.10 (-9%)

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