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Fornitori

Ditta 5
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 4
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 3
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 2
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 1
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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Ditta 0
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

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White alder
White alder (Platylophus trifoliatus)

Family: Cunoniaceae

Common names: White alder, White els, Witels, Witte els

Distributed in: South Africa (Africa)

Common uses: Agricultural implements, Boat building (general), Boxes and crates, Broom handles, Cabinetmaking, Furniture, Joinery, Light construction, Mine timbers, Moldings, Paneling, Plywood, Posts, Railroad ties, Sporting Goods, Tool handles, Toys, Turnery

Tree size: Tree height is 20-30 m

Colors: the heart isPale red to pink, Yellow to golden-yellow to orangeand the sapwoodPaler than heartwood .The grain isWeak figure, the textureMedium

Natural durability: Susceptible to attack from termites (Isoptera), Susceptible to insect attack

Kiln Schedules: UK=A US=T2D4/T2D3 Fr=1

Kiln Drying Rate: Very slow (>28 days for boards < 32 mm, to >84 days for boards >= 63 mm)

Drying Defects: Moderate collapse and honeycombing

Ease of Drying: Difficult

Cutting Resistance: Cutting Resistance with green wood is easy

Gluing: Easy to glue

Mortising: Easy to mortise

Moulding: Easy to mould

Movement in Service: Easy to mould

Nailing: Easy to nail

Planing: Easy to plane

Resistance to Impregnation: Heartwood is extremely resistant

Response to hand tools: Easy to machine

Turning: Turns with moderate ease

Painting: Fair to Good; Polishing: Fair to Good; Varnishing: Fairly Easy to Very Easy;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 528 kg/m3
Bending Strength 429 674 kg/cm2
Crushing Strength 275 449 kg/cm2
Hardness 451 kg
Impact Strength cm
Shearing Strength 62 kg/cm2
Stiffness 71 84 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 6 %
Weight 512 400 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 6111 9589 psi
Density 33 lbs/ft3
Hardness 995 lbs
Maximum Crushing Strength 3916 6397 psi
Shearing Strength 882 psi
Stiffness 1017 1199 1000 psi
Weight 32 25 lbs/ft3
Radial Shrinkage 6 %
Tangential Shrinkage 9 %

Density (dry weight) = 31-37 lbs/cu. ft. 1
Density (dry weight) = 38-45 lbs/cu. ft.
Max. crushing strength = medium
Bending strength (MOR) = low
Shrinkage, Tangential = large
Shrinkage, Radial = large
Shearing strength (parallel to grain) = very low
Modulus of Elasticity (stiffness) = very low
Hardness (side grain) = soft
Density (dry weight) = 23-30 lbs/cu. ft.
Shrinkage, Tangential = fairly large
Shrinkage, Radial = fairly large

Banks, C.H., Schoeman, J.P., Otto, K.P.,1977,The Mechanical Properties of Timbers with particular reference to South,Africa,South African Forestry Research Institute Bulletin,(Ed.,Schoeman, J.P. 1973 & Otto K.P. 1976,No.48Banks, C.H.,1954,The Mechanical Properties of Timbers with Particular Reference to those,grown in the Union of South Africa,Journal of the South African Forestry Association,No. 24 pp.44-65,[South,African Forestry Journal]Banks, C.H.,1970,The Durability of South African Wood and Wood Base Building Materials,South African Forestry Journal,No.75Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchChalk, L. et al.,1935,Fifteen South African High Forest Timber Trees,Forest Trees and Timbers of the British Empire, Imperial Forestry,Institute, Oxford,Part 3Scott, M.H.,1935,Weights of South African Growth Timbers,South African Department of Agriculture and Forestry Bulletin,No.145,Forest Products Institute, Forestry Series No.1Scott, M.H.,1953,Utilisation Notes on South African Timbers,South African Forestry Department Bulletin No.36Sim, T.R.,1921,Native Trees of South Africa,Union of South Africa Department of Mines and Industries Memoir No.3Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7
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