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Ditta 5
Indirizzo: via dei platani 4 liguria
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West African cordia
West African cordia (Cordia platythyrsa)

Family: Boraginaceae

Common names: Ebe, Omo, West African cordia

Distributed in: Cameroon, Congo, Equatorial Guinea, Gabon, Gambia, Ghana, Guinea Bissau, Guinea, Ivory Coast, Liberia, Nigeria, Sierra Leone, Togo, Zaire (Africa)

Distribution overview: Cameroon, Ghana, C￿d'ivoire, Liberia and Sierra Leone, in the dense forests and in the old secondary vegetable formations. It is a pioneer species. The trees of bigger size belonging to this species (by considerant C millenii and C platythyrsa together) prefer the intact and well drained places, while the smaller trees frequently grow in disturbed forests.

Common uses: Boat building, Cabinetmaking, Canoes, Core Stock, Decorative veneer, Furniture , Furniture, Interior construction, Joinery, Paneling , Sounding boards

Environment profile: Status unknown in many of its growth areas

Tree size: Tree height is 30-40 m

Colors: the heart isWhite, Yellow to golden-yellow to orangeand the sapwoodTan, White.The grain isStriped figure, the textureMediumand the lusterMedium

Natural durability: Non-durable, Perishable

Odor: No specific smell or taste

Kiln Schedules: UK=K US=T13C4S/T11D3S

Kiln Drying Rate: Naturally dries quickly

Drying Defects: Slight twist/warp, Water pockets

Ease of Drying: Reconditioning Treatement

Tree Identification: Bole/stem form is cylindrical

Comments: General finishing qualities are rated as good

Blunting Effect: Slight

Boring: Requires strong hold to prevent chipping of exit holes

Carving: Fairly Easy to Very Easy

Cutting Resistance: Cutting resistance with dry wood is moderate Cross-Cutting may cause bottom of cut to break out, and narrow band-sawing is rated as satisfactory

Gluing: Glues well

Mortising: Worked surfaces tend to be woolly

Moulding: Satisfactory moulding

Movement in Service: Satisfactory moulding

Nailing: Holds satisfactorily, Very Good to Excellent

Planing: Sharp cutting edges recommended

Resistance to Impregnation: Permeable sapwood

Response to hand tools: Responds Readily

Routing recessing: Satisfactory routing results

Sanding: Fair to Good Results

Veneering qualities: Suitable for peeling

Steam bending: Very poor

Screwing: Good screwing properties, Very Good to Excellent Results; Turning: Finish is generally satisfactory

Polishing: Satisfactory; Staining: Stains well after surface treatment ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,39
Density 400 kg/m3
Bending Strength 502 703 kg/cm2
Crushing Strength 247 375 kg/cm2
Hardness 207 kg
Impact Strength cm
Shearing Strength kg/cm2
Stiffness 69 80 1000 kg/cm2
Tangential Shrinkage 4 %
Radial Shrinkage 3 %
Weight 400 336 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 7149 10007 psi
Density 25 lbs/ft3
Hardness 457 lbs
Maximum Crushing Strength 3525 5338 psi
Stiffness 989 1146 1000 psi
Specific Gravity 0.39
Weight 25 21 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 4 %
Volumetric Shrinkage 8 %

Bending strength (MOR) = low
Density (dry weight) = 23-30 lbs/cu. ft.
Shrinkage, Tangential = very small
Shrinkage, Radial = small
Modulus of Elasticity (stiffness) = very low
Max. crushing strength = medium
Hardness (side grain) = very soft
Resistance to shock loads is very low
Max. crushing strength = low
Density = low
Compression strength (parallel to grain) = medium
Bending strength (MOR) = medium

Boone, R.S., C.J. Kozlik, P.J. Bois and E.M. Wengert. 1988. Dry Kiln Schedules for Commercial Woods: Temperate and Tropical. United States Department of Agriculture, Forest Service, General Technical Report FPL-GTR-57, Forest Products Laboratory, Madison, Wisconsin.Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry DepartmentHMSO. 1981. Handbook of Hardwoods, 2nd Edition. Revised by R.H. Farmer. Department of the Environment, Building Research Establishment, Princes Risborough Laboratory, Princes Risborough, Aylesbury, Buckinghamshire.Keay, R.W.J.1989. Trees of Nigeria.Revised Version of Nigerian Trees. Clarendon Press, Oxford.Lincoln, W.A. 1986. World Woods in Color. Linden Publishing Co. Inc. Fresno, California.Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7WCMC. 1992. Conservation Status Listing: Trees and Timbers of the World. World Conservation Monitoring Center (WCMC, Plants Program, 219 Huntingdon Road, Cambridge, CB3 ODL, United Kingdom.
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