Blackwood, Tasmanian

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		Blackwood, Tasmanian Botanical Name: Acacia melanoxylon Common Name(s): Australian Blackwood Origin: Australia
OverviewBasic InfoTechnical General: The heartwood ranges in colour from a lustrous golden-brown to reddish-dark brown with a fairly dark brown zone marking the growth rings. The grain is usually straight but may be interlocked or wavy and the texture is medium and even. The wavy grain produces a beautiful fiddle-back figure. Seasoning: Dries fairly easily and without undue degrade, although there is some tendency to cupping. Working: The timber works fairly easily but cutting edges must be kept sharpened for end grain working. A reduction of cutting angle to 20º is usually beneficial in planning and moulding, particularly when curly grain is present. It can be screwed and nailed well but gluing properties are often variable. It finishes well and takes an excellent stain and polish. Uses: Fine furniture, shop fitting, cabinets, gun stocks, musical instruments and decorative veneer. Availability Stocked: Yes Price: Supply - Resource Certification Durability - Durability Durability (In Ground) Durability (Above Ground): Moderately Durable Density Density Air Dried 625 - 670 kg/m² Shrinkage Shrinkage Radial 1.5 - 3.6 % (Green to 12% MC) Shrinkage Tangental: 4.0 - 4.5 % (Green to 12% MC) Stability Stability Kiln Dried Very Stable Stability Green: Stable Mechanical Properties Mechanical Links Janka Hardness: (Average) kN Modulus of Rupture / Bending Strength: 129 MPa (N/mm² or MN/m²) Modulus of Elasticity / Stiffness: 14 GPa (GN/m²) Maximum Crushing Strength: 14 MPa (N/mm² or MN/m²) Moisture Meter Reading Corrections Moisture Meter Reading Corrections: Fire Indicies Ignitability Index: (NZ/AS 1530.3) 13 Flame Spread Index: (NZ/AS 1530.3) 9 Heat Evolved Index: (NZ/AS 1530.3) 5 Smoke Developed Index: (NZ/AS 1530.3) 3

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