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Blunting Effect
Comments
Common Names
Common Uses
Countries of Distribution
Cutting Resistance
Distribution Overview
Drying Defects
Ease of Drying
Family Name
Gluing
Grain
Heartwood Color
Kiln Drying Rate
Kiln Schedules
Luster
Movement in Service
Nailing
Natural Durability
Natural Growth Defects
Numerical Data
Painting
Planing
Polishing
References
Regions of Distribution
Resistance to Impregnation
Response to Hand Tools
Routing & Recessing
Sapwood Color
Scientific Name
Screwing
Staining
Steam Bending
Strength Properties
Synonyms
Texture
Toxicity
Trade Name
Tree Identification
Tree Size
Turning
Varnishing
Veneering Qualities

Scientific Name
Eucalyptus delegatensis

Trade Name
Alpine ash

Family Name
Myrtaceae

Synonyms
Eucalyptus gigantea


Wood Image 1

Common Names
Alpine ash, Australian oak, Eucalyptus, Gum top stringy bark, Mountain ash, Red mountain ash, Southern mountain ash, Stringy bark, Tasmanian oak, Victorian ash, White top stringy bark, Woollybut

Regions of Distribution
Oceania and S.E. Asia

Countries of Distribution  [VIEW MAP]
Australia

Common Uses
Agricultural implements, Baseball bats, Boat building (general), Boat building: planking, Boxes and crates, Cabinetmaking, Carvings, Cooperages, Flooring, Food containers, Furniture, Handles: general, Heavy construction, Joinery, Ladders, Light construction, Matches, Moldings, Oars, Paneling, Particleboard, Plywood corestock, Plywood, Poles, Pulp/Paper products, Skis, Sporting Goods, Tool handles, Toys, Turnery, Vats, Vehicle parts, Wheel spokes, Wheels

Distribution Overview
Eastern Victoria, extreme southeastern New South Wales in Australia.

Heartwood Color
Brown
Green/grey
Red
Pink
White
Yellow
Black
Orange
Pale brown
Pale red to pink
Yellow to golden-yellow to orange
White to cream


Sapwood Color
White
Yellow
Brown
Red
Green/Grey
Paler than heartwood


Grain
Straight
Figure
Growth rings (figure)
Closed
Even
Wavy
Interlocked
Stripe (figure)

Straight
Clear growth rings (figure)
Wavy
Striped figure
Interlocked


Texture
Coarse
Medium
Coarse


Luster
Medium


Natural Growth Defects
Gum/resin streaks


Natural Durability
Susceptible to insect attack
Non-resistant to powder post beetles
Moderately durable
Durable
Non-resistant to termites
Very durable
Perishable
Non-resistant to marine borers
Non-durable
Resistant to attack from powder post (Lyctid & Bostrychid) beetles
Moderately durable
Susceptible to marine borer attack
Susceptible to attack from termites (Isoptera)
Susceptible to attack from powder post (Lyctid & Bostrychid) beetles
Pinworms (ambrosia beetles) are commonly present


Toxicity
Some toxic effects
Respiratory effects
Dermatitic effects


Kiln Schedules
Drying (speed) is fast
Kiln Drying Rate (in days) is rather slow


Drying Defects
Checking
Distortion
Collapse
Internal Honeycombing Possible
Severe collapse and honeycomb
Moderate surface checking
Slight surface checking
Moderate twist/warp
Moderate collapse and honeycombing


Ease of Drying
Fairly Easy
Moderately Difficult to Difficult
Moderate
Difficult


Kiln Drying Rate
Drying rate is fairly rapid to fast
Slow (18-28 days for boards < 32 mm, to 52-84 days for boards >= 63 mm)


Tree Identification
Bole/stem form is straight


Tree Size
Trunk diameter is 100-150 cm
Tree height is 30-40 m
Tree height is 40-50 m
Trunk diameter is 150-200 cm
Tree height is 20-30 m
Tree height is 50-60 m
Tree height is 60-70 m
Tree height is greater than 70 m


Comments
General finishing qualities are rated as good

Blunting Effect
Blunting effect on sawing dry wood is moderate
Blunting effect on machining is slight
Blunting effect on machining is moderate


Cutting Resistance
Easy to saw
Cutting Resistance with dry wood is moderate
Cutting Resistance with green wood is easy
Cutting Resistance with dry wood is easy


Gluing
Fairly Easy to Very Easy
Fair to Good Results
Fairly Difficult to Very Difficult
Easy to glue
Moderate gluing properties


Movement in Service
Medium


Nailing
Pre-Boring Recommended
Fairly Difficult to Very Difficult
Holds satisfactorily
Difficult to nail


Planing
Fairly Easy to Very Easy
Fairly Difficult to Very Difficult
Planes well, to a good finish
Planes to a satisfactory finish
Planes to a poor finish
Easy to plane


Resistance to Impregnation
Resistant heartwood
Resistant sapwood
Permeable heartwood
Permeable sapwood
Sapwood is permeable
Heartwood is resistant
Heartwood is highly resistant


Response to Hand Tools
Easy to Work
Fairly Difficult to Difficult to Work
Moderate working qualities
Easy to machine


Routing & Recessing
Satisfactory routing results


Screwing
Fairly Difficult to Very Difficult
Easy to screw


Turning
Fairly Difficult to Very Difficult
Easy to turn


Veneering Qualities
There is slight to moderate drying degrade and the potential for buckles and splits
Moderately easy to veneer


Steam Bending
Fair to Good Results
Good
Very good
Moderate


Painting
Very Good to Excellent Results
Fair to Good Results


Polishing
Fair to Good Results
Poor to Very Poor Results
Very Good to Excellent Results
Good results


Staining
Fair to Good Results
Very Good to Excellent Results
Finish is generally good


Varnishing
Good results


Strength Properties
Density (dry weight) = 38-45 lbs/cu. ft.
Bending strength (MOR) = medium
Modulus of Elasticity (stiffness) = medium
Density (dry weight) = 46-52 lbs/cu. ft.
Max. crushing strength = medium
Shearing strength (parallel to grain) = low
Density (dry weight) = 31-37 lbs/cu. ft.
Max. crushing strength = high
Shrinkage, Tangential = large
Hardness (side grain) = soft
Shrinkage, Radial = large
Modulus of Elasticity (stiffness) = low
Modulus of Elasticity (stiffness) = high
Bending strength (MOR) = low
Shrinkage, Radial = fairly large
Shearing strength (parallel to grain) = medium
Bending strength (MOR) = high


Numerical Data
ItemGreenDryEnglish
Bending Strength915814311psi
Density40lbs/ft3
Hardness995lbs
Maximum Crushing Strength51597875psi
Shearing Strength1652psi
Stiffness169519561000 psi
Weight3931lbs/ft3
Radial Shrinkage6%
Tangential Shrinkage10%
ItemGreenDryMetric
Bending Strength6431006kg/cm2
Density641kg/m3
Hardness451kg
Maximum Crushing Strength362553kg/cm2
Shearing Strength116kg/cm2
Stiffness1191371000 kg/cm2
Weight624496kg/m3
Radial Shrinkage6%

References
Australia - N.S.W. Forestry Commission,1968,Working Properties of some Native and Imported Timbers,Forestry Commission of New South Wales, Technical Publication No.8

Australia - N.S.W. Forestry Commission,1988,Furniture Timbers of New South Wales,Forest Commission, N.S.W., Aust. Tech. Publication No.1

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.48

Boas, I.H.,1947,The Commercial Timbers of Australia - Their Properties and Uses,Council for Scientific and Industrial Research, Melbourne

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

Bolza, E., Kloot, N.H.,1963,The Mechanical Properties of 174 Australian Timbers,C.S.I.R.O. Division of Forest Products Technological Paper,No.25

Bolza, E.,1976,Timber and Health,Div. Building Res. C.S.I.R.O. Australia

Farmer, R.H.,1972,Handbook of Hardwoods,HMSO

Forests Products Research Laboratory, U.K.,1956,A Handbook of Hardwoods,Forest Products Research Laboratory, Princes Risborough, Department of,Science and Industrial Research, Building Research Establishment

Haslett, A.N.,1988,Properties and utilisation of exotic speciality timbers grown in New,Zealand Part V: Ash Eucalypts and Eucalyptus nitens E. regans,,E.delegatensis, E.fastigata, E.obliqua, E.sieberi, E.fraxinoides, E.nitens,New Zealand Forest Service, Forest Research Institute, FRI Bulletin No.119

I.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer Cutting

Scott, 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.1

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. 7

The Australian Timber Journal & Building Products, Merchandiser,1969,Timber Durability and Preservation,Supplement to Australian Timber Journal 35(4) Tech. Timb. Guide No.8

Thomas, A.J.,1955,Tasmanian Woods,Forestry Department Tasmania, Bulletin No.1

Timber Development Association,1942,Tasmanian Oak - Eucalyptus obliqua, E. regnans and E. gigantea,TRADA Timber Leaflet No. 30









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