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Zahana
Zahana (Phyllarthron madagascariense)

Family:

Common names: Zahana

Distributed in: Nigeria (Africa)

Distribution overview: The species occurs on the west coast of Africa, mainly in Nigeria.

Common uses: Broom handles, Building materials, Domestic flooring, Excelsior, Factory flooring, Flooring, Handles, Interior construction, Interior trim, Joinery, Ladders , Millwork, Mine timbers, Moldings, Parquet flooring, Pile-driver cushions, Piling, Shafts/Handles, Sub-flooring, Tool handles, Trimming, Turnery, Wainscotting

Product sources: Because of the similarities between Phyllarthron madagascariense and P. articulatum , timber produced by the two species are often mixed and marketed together under the same trade name.

Environment profile: Status within its natural growth range has not been officially assessed

Tree size: Trunk diameter is 300-350 cm

Colors: the heart isWhite, Yellowand the sapwoodWhite, Yellow.The grain isStraight, the textureUniformand the lusterMedium

Natural durability: Suitable for exterior applications , Susceptible to insect attack

Odor: No specific smell or taste

Kiln Drying Rate: Naturally dries quickly

Drying Defects: Internal Honeycombing Possible, Splitting

Ease of Drying: Slowly

Comments: Exceptionally strong Heavy Varies in stiffness

Blunting Effect: Medium blunting effect on cutting tools

Boring: Very good to excellent results

Cutting Resistance: Easy to saw The wood exhibits high resistance in sawing, especially in the seasoned condition

Gluing: Very Good to Excellent Results

Mortising: Very Good to Excellent

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Nailing: Fairly Easy to Very Easy, Very Good to Excellent

Planing: Very Good to Excellent

Resistance to Abrasion: Very good wearing properties Zahana can be used for flooring in areas with a high volume of traffic

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Fairly Difficult to Difficult to Work

Routing recessing: Very Good to Excellent Results

Sanding: Fairly Easy to Very Easy

Veneering qualities: Veneers easily, Veneers moderately easy

Steam bending: Fairly Easy to Very Easy

Screwing: Fairly Easy to Very Easy, Very Good to Excellent Results; Turning: Very Good to Excellent Results

Painting: Very Good to Excellent; Polishing: Generally polishes well ; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density kg/m3
Bending Strength 1033 1584 kg/cm2
Crushing Strength 516 813 kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength 187 kg/cm2
Stiffness 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 14700 22540 psi
Maximum Crushing Strength 7350 11564 psi
Shearing Strength 2666 psi
Stiffness 2313 2666 1000 psi

Ending strength in the air-dry condition (about 12 percent moisture content) is exceptionally high. It is far superior in strength to either Teak or Hard maple. Maximum crushing strength, or compression parallel to grain, is exceptionally high.

Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building Research
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