Comparison of Wood Properties
Botanical Name
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Acacia mangium
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Tectona grandis
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Euc camaldulensis
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Trade Name
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Acacia
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Teak
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River Red Gum
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Wood Appearance
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Colour
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Heartwood varies from light brown to brown, often with darker markings. Sapwood creamy-white to pale brown.
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The heartwood is generally golden brown, but varies from grey-brown to red-brown. Sapwood is well demarcated and pale yellow in colour.
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Heartwood ranges from red to dark red. Sapwood is distinctly paler.
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Grain
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Grain variable, texture coarse but rather even.
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Straight or occasionally interlocked. Texture is uneven varying from smooth to coarse due to its ring-porosity.
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Moderately coarse, uniformed textured, usually interlocked.
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Wood Properties
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Density
(1)
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745
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670
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870-1010
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Strength Group
(2)
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SD5
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SD6
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SD4
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Stress Grades
(3)
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F8, F11, F14, F17
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F7, F8, F11, F14
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F11, F14, F17, F22
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Durability
(4)
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3
Moderately resistant to decay when fully exposed to weather, clear of ground and well drained with free air circulation.
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2
Highly resistant to decay when fully exposed to weather, clear of ground and well drained with free air circulation |
1
Highly resistant to decay in ground contact or in persistently damp or badly ventilated stuations
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Hardness
(5)
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3
Moderately hard
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4-6
Firm to very soft
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1
Very hard
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(1) Average kg/m3 at 12% moisture content (MC)
(2) Seasoned, SD1 to SD8, SD1 highest
(3) Basic working stress in bending e.g. F8 approx. 8 Mpa
(4) Seasoned, 1 to 4, 1 highest
(5) Relative ease of working with hand tools. 1 = Very hard - 6 = Very soft
Source: "Timber Species Notes", Department of Primary Industries, Queensland, Australia, April 1994.
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