Timber species characteristics

Over 16 hardwood native tree species are grown for timber in the Super Forest Plantations. This table outlines the timber characteristics of these species.

Super Forest Plantation’s
Species –  TIMBER CHARACTERISTICS
COLOUR DENSITY DURABILTY STRENGTH GROUP SHRINKAGE LYCTID BORER
No. SPECIES Heartwood (H) Green (GD) CLASS Green (S) Radial (R) SUSCEPTBILITY
Sapwood (S) Air Dry (ADD) Seasoned (SD) Tangential (T) Yes/No
1 E. acmenoides H: Yellow-Brown   GD: 1200 kg/m3 1 S2 R: 3.5% NO
White Mahogany S: Noticably Paler ADD: 1000 kg/m3 Very Durable SD3 T: 6.0%
Other Properties Slow to dry, little degrade or
collapse, grain usually interlocked, narrow sapwood (<20mm). Heavy
engineering construction, poles, sleepers, shipbuilding, fence posts
& Uses
PAGE: 305
2 E. cloeziana H: Yellow-Brown   GD: ? kg/m3 2 S2 R: 3.5% NO
Gympie Messmate S: Slightly Paler ADD: 1000 kg/m3 Durable SD3 T: 6.0%
Other Properties Easy to dry, Negligible collapse, grain
slightly interlocked. General construction, poles, sleepers, bridges, etc.
& Uses
PAGE: 314
3 E. grandis H: Pink to Pale
Red-Brown
  GD: 950 kg/m3 3 S3 R: 4.0% NO
Flooded Gum S: Slightly Paler ADD: 685 kg/m3 Moderately Durable SD4 T: 7.0% Resistant
Other Properties Easy to dry & work, Inclined
to surface check, grain straight, prone to splitting, prone to cossid moth.
Panelling, joinery, furniture, general construction. Density increases with
age, less mature wood only suitable for internal uses.
& Uses
PAGE: 282
4 E. microcorys H: Yellow-Brown   GD: 1230 kg/m3 1 S2 R: 4.0% YES
Tallow wood S: Noticably Paler ADD: 990 kg/m3 Very Durable SD2 T: 6.0%
Other Properties Slow to dry, Negligible
collapse, grain often interlocked, complete absence of gum veins, pin hole
borer marks common. Heavy engineering structures, poles, sleepers, bridges,
wharves, flooring, cladding, sills, piles, crossarms, fence posts. Greasy
feel to wood, hard to glue, good resistance to surface checking when exposed
to weather.
& Uses
PAGE: 359
5 E. pilularis H: Pale Brown   GD: 1100 kg/m3 2 S2 R: 4.0% NO
Blackbutt S: Distinctively
Paler
ADD: 900 kg/m3 Durable SD2 T: 7.0%
Other Properties Difficult to dry, prone to
surface check, grain straight, gum veins common, reconditioning not
advisable. Poles, sleepers, flooring, building framework, structural plywood.
Regrowth subject to more bow & spring & central core has considerable
collapse than mature stems.
& Uses
PAGE: 251
6 E. resinifera H: Dark Red   GD: 1150 kg/m3 2 S2 R: 4.0% YES
Red Mahogany S: Distinctively
Paler
ADD: 950 kg/m3 Durable SD3 T: 6.0%
Other Properties Dries with little degrade if
well stacked, negligible collapse, good for painting as little surface
checking. Flooring, cladding, panelling, general construction, sleepers,
poles. Grain slightly interlocked, can be ‘ebonised to rich black by
treatment with ferric chloride, pin hole borer common.
& Uses
PAGE: 303
7 E. saligna H: Pink to Pale
Red-Brown
  GD: 1170 kg/m3 3 S3 R: 5.0% YES
Sydney Blue Gum S: Slightly Paler ADD: 850 kg/m3 Moderately Durable SD3 T: 9.0%
Other Properties Easy to dry, Surface checking on
tangential surfaces, Little collapse, Heart-centre splits severely no good
for girders. General construction, cladding, flooring, panelling, boat
building, potential for heavy furniture & plywood. Relatively easy to work.
& Uses
PAGE: 278
8 E. siderophloia H:
Pale Brown to Dark Brown to Dark Red
  GD: 1210 kg/m3 1 S1 R: 4.5% NO
Grey Ironbark S: Slightly Paler ADD: 1120 kg/m3 Very Durable SD1 T: 7.5%
Other Properties Slow to dry, Needs careful
handling to avoid surface checking. Heavy engineering structures, poles,
sleepers, bridges, wharves, flooring, decking, cladding, sills, piles,
crossarms, fence posts. Hard to work due to density.
& Uses
PAGE: 288
9 E. moluccana H: Pale Yellow Brown   GD: 1170 kg/m3 1 S2 R: 3.5% NO
Grey Box S: Distinctively
Paler
ADD: 1120 kg/m3 Very Durable SD2 T: 7.5%
Other Properties Slow to dry, Not prone to
surface checking. Heavy engineering structures, poles, sleepers, bridges,
wharves, piles, crossarms, fence posts, excellent fuel wood. Difficult to
work due to density.
& Uses
PAGE: 256
10 E. propinqua H: Red   GD: 1240 kg/m3 1 S1 R: 7.0% NO
Grey Gum S: Distinctively
Paler
ADD: 1080 kg/m3 Very Durable SD2 T: 4.5%
Other Properties Slow to dry, Little degrade in
drying, Prone to grub holes. Heavy engineering structures, poles, sleepers,
fence posts.Difficult to work due to density.
& Uses
PAGE: 279
11 E. tereticornis H: Red   GD: 1200 kg/m3 2 S3 R: 5.0% NO
Forest Red Gum S: Distinctively
Paler
ADD: 1050 kg/m3 Durable SD3 T: 8.0%
Other Properties Easy to dry, Little degrade in
drying, Prone to grub holes. Heavy engineering structures, machinery
bearings, poles, sleepers, fence posts. Can be difficult to dress.
& Uses
PAGE: 281
12 L. confertus H: Pinkish Grey to
Red Brown
  GD: 1160 kg/m3 3 S3 R: 5.0% NO
Brush Box S: Distinctively
Paler
ADD: 900 kg/m3 Moderately Durable SD3 T: 10.0%
Other Properties Difficult to dry, Can distort
severely. Flooring, cladding, panelling, mallets, pulley blocks, bridge
decking in dry areas. Not easy to work due to density, interlocked grain
& presence of silica,very resistant to wear.
& Uses
PAGE: 255
13 S. glomulifera H: Reddish Brown   GD: 1130 kg/m3 1 S3 R: 6.0% NO
Turpentine S: Distinctively
Paler
ADD: 930 kg/m3 Very Durable SD3 T: 12.0%
Other Properties Slow to dry, Some checking &
collapse. Marine piling (bark on), poles, sleepers, shipbuilding, wharve
& bridge decking, flooring, panelling, general construction. High silica
blunts blades, Silica & nature of extractives make it resistant to marine
organisms.
& Uses
PAGE: 363
14 C.
Citriodora sub. variegata
H:
Pale Brown to Dark Brown
  GD: 1150 kg/m3 2 S2 R: 4.5% YES
Spotted Gum S: Distinctively
Paler
ADD: 950 kg/m3 Durable SD2 T: 6.0%
Other Properties Care in drying to reduce
checking. Heavy engineering structures, piles, poles, flooring, plywood,
agricultural machinery, shipbuilding, high impact handles. Easy to work.
& Uses
PAGE: 284
15 C. gummifera H: Dark Red   GD: 1150 kg/m3 1 S3 R: 3.0% YES
Red Bloodwood S: Distinctively
Paler
ADD: 900 kg/m3 Very Durable SD3 T: 4.0%
Other Properties Easy to dry, does not move
around much, concentric gum veins can open up. Heavy engineering structures,
piles, poles, fence posts, decorative panelling. Relatively easy to work,
very prone to concentric gum veins.
& Uses
PAGE: 284
16 C. Intemedia H: Dark Pink   GD: 1150 kg/m3 1 S3 R: 3.0% YES
Pink Bloodwood S: Distinctively
Paler
ADD: 900 kg/m3 Very Durable SD3 T: 4.0%
Other Properties Easy to dry, does not move
around much, concentric gum veins can open up. Heavy engineering structures,
piles, poles, fence posts, decorative panelling. Relatively easy to work,
very prone to concentric gum veins.
& Uses
PAGE: 284
Reference – Bootle,
K.R., 2001, ‘Wood In Australia – Types, properties & uses’, McGraw-Hill,
Australia.