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Black varongy
Black varongy (Ocotea thouvenotii)

Family: Lauraceae

Common names: Black varongy, Varongy, Varongy noir

Distributed in: Madagascar (Africa)

Environment profile: Status has not been officially assessed

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isWhite, Yellowand the sapwoodWhite, Yellow.The grain isWavy, the textureUniformand the lusterLow

Natural durability: Susceptible to insect attack, Very durable

Odor: Unpleasent aroma associated with freshly cut material

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Distortion, Splitting

Ease of Drying: Slowly

Comments: Timber properties vary considerably with density

Blunting Effect: Slight dulling effect on cutting tools

Boring: Fairly easy to very easy

Carving: Fairly Easy to Very Easy

Cutting Resistance: Low cutting resistance

Gluing: Good gluing properties

Mortising: Fairly Easy to Very Easy

Moulding: Satisfactory moulding

Movement in Service: Satisfactory moulding

Nailing: Holds nails well, Poor to Very Poor

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Responds Readily

Routing recessing: Fairly Easy to Very Easy

Sanding: Fairly good sanding characteristics

Screwing: Fairly Difficult to Very Difficult, Fairly Easy to Very Easy; Turning: Fairly easy turning, boring, mortising and other machining operations

Polishing: Fair to Good; Staining: Fairly Easy to Very Easy; 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 516 792 kg/cm2
Crushing Strength 258 461 kg/cm2
Hardness kg
Impact Strength cm
Shearing Strength 117 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 7350 11270 psi
Maximum Crushing Strength 3675 6566 psi
Shearing Strength 1666 psi
Stiffness 1294 1519 1000 psi

Compression strength (parallel to grain) = high
The bending strength of air-dried wood of the species is similar to that of Teak, which is considered to be strong. Maximum crushing strength, or compression strength parallel to grain, is high. Some familiar species with high crushing strength parallel to grain include Hard maple, Teak, and White oak

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
*Come interpretare i dati (manleva su eventuali imprecisioni)