Species

All timber species sawn by Radial Timber for external applications and requiring natural durability are selected from regrowth Eucalyptus species ranging in durability from Class 1 to 2 (NOTE: this is the same durability class as Western Red Cedar and Jarrah). Wherever possible, Radial Timber sources plantation grown species such as Mountain Ash for internal applications such as flooring and wall/ceiling linings.

Species E. Muellerana E. Sieberi E. Botryoides
Common Name Yellow Stringybark Silvertop Ash Sth. Mahogany
Density – Dry 870kg/m3 820kg/m3 920kg/m3
Density – Green 1100kg/m3 1030kg/m3 1180kg/m3
Strength Group S3 SD3 S4 SD3 S2 SD3
% Shrinkage-Radial 4.5 6.0 5.0
% Shrinkage-Tangential 7.5 10.1 10.0
MOE – Dry 17 17 18
MPA – Green 14 10 15
MOR – Dry 132 136 130
MPA – Green 90 69 84
Hardness – Dry 8.5 9.5 9.0
Hardness – Green 6.3 7.2 7.0
Durability Class (above ground) 2 2 2
Durability Class (in ground) 3 3 3
Lyctus Bore Non-Susceptible Non-Susceptible Non-Subceptible
Av.External Life (above ground) 15 – 40 years 15 – 40 years 15 – 40 years

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