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Kahikatea
Kahikatea (Podocarpus dacrydioides)

Family: Podocarpaceae

Common names: Kahikatea, New Zealand pine, New Zealand podocarpus, New Zealand white pine, White pine

Distributed in: New Zealand (Oceania and S.E. Asia)

Common uses: Boat building (general), Boat building: planking, Boxes and crates, Cooperages, Flooring, Food containers, Furniture, Joinery, Light construction, Lock gates, Matches, Plywood, Turnery, Vats, Veneer

Tree size: Trunk diameter is 150-200 cm

Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isStraight, the textureFine

Natural durability: Perishable, Resistant to attack from powder post (Lyctid & Bostrychid) beetles

Kiln Schedules: UK=H US=T10D4S/T8D3S Fr=7

Kiln Drying Rate: Rapid (<10 days for boards < 32 mm, to <30 days for boards >= 63 mm)

Drying Defects: Severe twisting/warping

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Blunting Effect: Little

Gluing: Fairly Easy to Very Easy

Mortising: Very Good to Excellent

Moulding: Very Good to Excellent

Movement in Service: Very Good to Excellent

Nailing: Pre-Boring Recommended

Planing: Very Good to Excellent

Resistance to Impregnation: Sapwood is permeable

Response to hand tools: Easy to machine

Steam bending: Fair to Good Results

Turning: Very Good to Excellent Results

Painting: Very Good to Excellent; Polishing: Very Good to Excellent; 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 432 kg/m3
Bending Strength 429 674 kg/cm2
Crushing Strength 192 333 kg/cm2
Hardness 267 kg
Impact Strength cm
Shearing Strength 93 kg/cm2
Stiffness 77 90 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 3 %
Weight 416 368 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 6111 9589 psi
Density 27 lbs/ft3
Hardness 589 lbs
Maximum Crushing Strength 2731 4743 psi
Shearing Strength 1334 psi
Stiffness 1103 1291 1000 psi
Weight 26 23 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 6 %

Density (dry weight) = 23-30 lbs/cu. ft.
Bending strength (MOR) = low
Shearing strength (parallel to grain) = low
Max. crushing strength = low
Modulus of Elasticity (stiffness) = very low
Hardness (side grain) = very soft
Density (dry weight) = 31-37 lbs/cu. ft.
Shearing strength (parallel to grain) = very low
Max. crushing strength = medium
Hardness (side grain) = soft
Shrinkage, Tangential = small
Shrinkage, Tangential = moderate
Shrinkage, Radial = small
Modulus of Elasticity (stiffness) = low

Bier, H.,1983,The strength properties of small clear specimens of New Zealand-grown,timber,New Zealand Forest Service Forest Research Institute, FRI Bulletin No.41Brown, W.H.,1978,Timbers of the World, No. 8 Australasia,TRADA, Red Booklet SeriesCockayne, L. and Phillips Turner, E.,1958,The trees of New Zealand,New Zealand Forest Service Information Series No.12Dallimore, W. and Jackson, A. Bruce,1966,A Handbook of Coniferae and Ginkgoaceae Fourth Ed. Revised by S.G.,Harrison,Edward Arnold (Publishers) Ltd. LondonEntrican, E.R.,1949,The properties and uses of Kahikatea or white pine (Podocarpus,dacrydioides,New Zealand Forest Service Information Series No.5Howard, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.Kloot, N.H., Bolza, E.,1961,Properties of Timbers Imported into Australia,C.S.I.R.O. Forest Products Division Technological Paper,No.12Rendle, B.J.,1969,World Timbers (3 Vols.,Ernest Benn Ltd. LondonSmith, S.W. and Entrican, A.R.,1957,Forestry in New Zealand,New Zealand Forest Service Information Series No.1Stone, H.,1924,The Timbers of Commerce and their Identification,William Rider & Sons Ltd. London
*Come interpretare i dati (manleva su eventuali imprecisioni)