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| Eucalyptus cloeziana (F.Muell) (Iron Gum) Natural Durability: Class I Revised CSIRO Natural Durability Classification in-ground Durability ratings for mature outer heartwood. Compiled by John D. Thornton & Gary C. Johnson, Forestry & Forest products, Nam-Ky Nguyen, Mathematical & Information Sciences, CSIRO, Clayton, Victoria, Australia. Published: June 1997 In field tests executed by an official Dutch Research Institute (SHR Timber Research) indicate that Cloeziana is resistant against shipworm (Teredo navalis). E. cloeziana is originally from the Gympie District, Queensland, Australia. Therefore it also called Gympie messmate. The good physical properties of the timber, combined with its high durability, make it suitable for a wide range of purposes, including heavy construction, sleepers and mining timber. Due to its straight and branch free stem, it makes also a high quality transmission pole. The timber has a yellow-brown colour with a straight grain and a fine texture. It dries easily, both in sawn and pole form, with little deformation. Pre-boring advisable before nailing. Physical and mechanical properties (at moisture content approx. 20%, air dry) Density: 700 - 990 kg/m3 Modulus of Elasticity: 19521 Mpa Modulus of Rupture: 141 Mpa Fibre Stress at P.L.: 93,9 MPa Compression // Grain: 75,1 MPa Toughness: 57,6 MPa Hardness Side Grain (Janka): 8166 N Shrinkage (Green to Air Dry): Radial - 4,04 % Tangential - 6,78 % |
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