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Grey box
Grey box (Eucalyptus hemiphloia)

Family: Myrtaceae

Common names: Australian grey bastard box, Grey box, Ironbark

Distributed in: Australia (Oceania and S.E. Asia)

Distribution overview: Australia

Product sources: Availability of the timber is rather limited.

Environment profile: Status has not been officially assessed

Tree size: Trunk diameter is 200-250 cm

Colors: the heart isRed, Yellowand the sapwoodRed, Yellow.The grain isWavyand the lusterMedium

Natural durability: Susceptible to insect attack, Very durable

Kiln Drying Rate: Stripe (figure)

Drying Defects: Distortion, Splitting

Ease of Drying: Slowly

Comments: Good for structure

Blunting Effect: Moderate

Boring: Fairly easy to very easy

Cutting Resistance: Easy to saw

Gluing: Fairly Difficult to Very Difficult

Nailing: Fair to Good , Very Good to Excellent

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Fairly Difficult to Difficult to Work

Steam bending: Fair to Good Results

Turning: Very Good to Excellent Results

Polishing: Very Good to Excellent; Staining: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 1121 kg/m3
Bending Strength 978 1433 kg/cm2
Crushing Strength 138 210 kg/cm2
Hardness 1471 kg
Impact Strength cm
Shearing Strength 207 kg/cm2
Stiffness 132 163 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness 220 cm-kg
Static Bending 567 840 kg/cm2
Item Green Dry English
Bending Strength 13916 20384 psi
Crushing Strength 1975 2989 psi
Density 70 lbs/ft3
Hardness 3244 lbs
Maximum Crushing Strength 7076 11074 psi
Shearing Strength 2950 psi
Static Bending 8075 11956 psi
Stiffness 1882 2323 1000 psi
Toughness 191 inch-lbs
Specific Gravity 0.83 0.93


Banks, C.H. and J.P. Schoeman. 1963. Railway Sleeper and Crossing Timbers. Bulletin No. 41, Republic of South Africa. The Government Printer, Pretoria, South Africa.Bolza, E., Kloot, N. H. 1963. The Mechanical Properties of 174 Australian Timbers. Technological Paper No. 25. Division of Forest Products, Center for Scientific and Industrial Organization (CSIRO, Melbourne, Australia.Hillis, W.E. and A.G. Brown, Editors. 1984. Eucalyptus for Wood Production. Commonwealth Scientific and Industrial Research Organization, Academic Press, Australia.
*Come interpretare i dati (manleva su eventuali imprecisioni)