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Woody pear is generally
a small tree growing to 5 to 8 m tall, with a short bole that can occasionally
reach 30 cm in diameter. Individuals in open spaces can develop a broad
canopy of spreading limbs. Trees often have an untidy form, bark is fibrous
and flaky. The elliptical or oblong foliage is bright green and has serrate
margins. The large woody fruit is pear-shape, hence the common name. Woody
pear mostly occurs on sandy soils between the Darling Scarp and the ocean
coast. Other populations are found on sandy gravels in the Jarrah / Marri
forest east of the scarp's western edge. Although it has a wide distribution,
it is a minor species in any of its habitats, large populations are rarely
found.
Wood
description [more
info]
Heartwood is a dark reddish colour with a decorative figure. Sapwood
is a contrasting pale cream colour. Timber treated with wax can produce
a silk finish.
Wood
density [more
info]
Air-dry density is about 620 kg/m3.
Shrinkage
[more
info]
Tangential and radial shrinkage are estiamted as about... per cent respectively.
Workability
[more
info]
Very easy to dress, however, care must
be taken when sanding as timber tends to develop high and low points similar
to cedar. Quarter or back sawing will both provide an attractive
grain pattern. Gluing, turning and finishing are rated as good. Drilling
is rated as fair, a heavy hand is not required. Carving is rated as fair.
Durability
[more
info]
Strength
group and properties [more
info]
Green and dry strength groups are (S6) and (SD6). The brackets indicate
conservative provisional ratings based on the air-dry density. The more
important strength properties based on strength group are given in the
table below.
|
Property
|
Units
|
Green
|
Dry
|
|
Modulus
of Rupture
|
MPa
|
43
|
65
|
|
Modulus
of Elasticity
|
MPa
|
7900
|
10500
|
|
Max
Crushing Strength
|
MPa
|
22
|
41
|
|
Hardness
|
KN
|
-
|
-
|
Uses
[more
info]
Timber is recognised
as a specialty timber by wood craftsmen. Small pieces of furniture and
ornamental trinkets are the major product from this timber, but it is
also used for decorative turnery.
Availability
[more
info]
Limited availability from private property, because the
species is not harvested from state forests.
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