Select Language:  

logo

< Back KAPUR (Dryobalanops lanceolata) Print Friendly View

< Back Print Friendly View

KAPUR (Dryobalanops lanceolata)

Trade Name

Kapur

Scientific Name

Dryobalanops lanceolata Burck

Family

Dipterocarpaceae

Common Names

Kapoer (Netherlands); Kapur (Sabah); Indonesische kapur (Germany); Kapur (Sarawak); Oost-Borneo kamfer (Netherlands); Indonesisk kapur (Sweden); Capur indonesiano (Italy); Capur indonesiano (Spain); Swamp kapur (Sabah); Borneo camphorwood paigie (Sabah); Kapur (Malaysia); Capur d`Indonesia (France); Kapur-kejatan (Malaysia); Petanang (Indonesia); Kapur tanduk (Indonesia); Indonesian kapur (United States of America); Keladan (Malaysia); Indonesian kapur (United Kingdom)

Description Of The Tree

Botanical Description

This camphor tree is very large, occasionally up to 75 m tall, with a straight bole, branchless for 35 m or more, and having a diameter of up to145 cm and buttresses of up to 4 m high and 3 m long.

Natural Habitat

Dryobalanops lanceolata is the tallest recorded dipterocarp tree. Kapur timber fetches the highest prices in Borneo and the species is also a major source of Borneo camphor. It grows on fertile clayey soils up to 800 m of altitude.

Non Timber Uses

Brittle heart is occasionally reported for this species. It contains chemicals that discolor ferrous metals when damp.

View More Information

Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vestured pits. Vessel-ray pits reticulate and/or foraminate. Vascular/vasicentric tracheides present. Simple perforatio Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Rays storied. Silica bodies in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers with distinctly bordered pits.

  • Wood Macro Photo Radial Plane
  • Wood Micro Photo Of Transversal Section

Availability

Cites Status

Unrestricted

General Wood Description

Odor

The odor resembles camphor, particularly D. aromatica.

Color

The sapwood varies from light yellowish brown to pale pink. The heartwood is rose red to dark reddish brown.

COLOR INDEX (1=Black, 7=Light yellow,white)

5

Grain

It is mostly straight, rarely deep interlocking, occasional brittle heart in the innermost heart.

Texture

The texture varies from moderately coarse to coarse.

Luster

The planed surfaces are not particularly lustrous.

Natural Durability

It is resistant to fungi, when fresh it is vulnerable to insects.

Natural durability index (1= Very high durability, 7=Vey low durability)

3

Resistance To Impregnation

The heartwood is resistant to impregnation with preservatives, even under pressure. The sapwood is permeable to preservatives.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.69

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

0.78

Total shrinkage Tangential (Saturated to 0%MC) (%)

9.2

Total shrinkage Radial (Saturated to 0%MC) (%)

3.6

Drying Defects

Drying Defects: There is a moderate risk of splitting, insect attack and staining, and a slight risk of cupping, bowing and end-checking.

Recommended Dry Kiln Schedule

UK-H; JP-6; US-T10-D4S

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

2.6

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

993

Stiffness (MOE) 12%MC (kgf/cm²)

160965

Compression parallel to fiber 12%MC (kgf/cm²)

615

Shear strength radial 12%MC (kgf/cm²)

47

Workability

Sawing

When green, the timber is easy to saw. Dry timber is less easy to saw because of the presence of silica. Cross cutting is generally easy.

Rotary Veneer Cutting

It is good for peeling if well steamed, but resin problems.

Sliced Veneer

It is good for peeling if well steamed, but resin problems.

Blunting Effect

Saw-teeth may become clogged by resin.

Machining

Machining operations are easy to fair.

Planing

Planing is reported to be easy.

Boring

Boring is reported to be easy.

Nailing

Needs pre-bore for nailing. Screws well.

Gluing

Resin exudation causes gluing problems, urea glues recommended.

Finishing

Finishing of this species is reportedly difficult. It needs filling.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, crossties, HOUSING GENERAL, flooring, FURNITURE AND CABINETS, PLYWOOD AND VENEER, TOOLS, tool handles, CONTAINERS, truck bodies

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Crossties
  • 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
General Housing
  • 10 - Silica in Timbers
Flooring
  • 14 - Handbook of Hardwoods
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
Tools
  • 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
  • 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Truck Body
  • 53 - Timbers of the New World

Please Provide Information To View Producer Information

* Or, continue as guest