Chatoyance was measured by the chatometry.com team using the PZC method. The statistics for this specific timber are hereby summarized to provide an evaluation of data robustness:
Number of sources for samples: 1
Number of individual trees analyzed: 7
Number of specimens: 10
Number of measurements: 30
Max PZC read (of all measurements): 23.0
Min PZC read (of all measurements): 17.5
Max PZC average on one log: 21.4
Min PZC average on one log: 18.1
PZC Average of all logs: 18.9

Species: eucalyptus regnans
Family: Myrtaceae
Clade: Angiospermae
Description: Eucalyptus regnans is the world’s tallest flowering plant, a towering hardwood tree with a straight trunk, smooth grey bark that sheds in long strips, lance-shaped dark green leaves, and small woody gumnuts.
Other Local Names: Alpin ash, Blue leaf, Messmate, Mountain ash, White gum

Reference Colour: Brown
Texture: Coarse
Grain: Straight
Interlocked Grain: Absent
Notes: Sapwood pale rose. Heartwood light brown to pink brown depending on the species. Distinct growth rings. Sometimes latex veins (Kino).

Diameter: 50÷100cm
Density @12% MC: 800kg/m³
Janka Hardness: 2280lbf
Crushing Strength @12%MC: 70MPa
Static Bending Strength @12%MC: 110MPa
Longitudinal Modulus of Elasticity E: 18GPa
Volumetric Shrinkage Coefficient: 0.52% per %
Total Tangential Shrinkage TS: 10%
Total Radial Shrinkage TS: 5%
T/R Anisotropy Ratio: 2-
Fibre Saturation Point: 29%
Thermal Conductivity: 0.26W/mk
Lower Heating Value: 18540KJ/Kg
Sapwood Thickness: 2÷4cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 3 – moderately durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood) Atlas of Tropical Timber Species TASMANIAN OAK Cross sections of Eucalyptus delegatensis
Resistance to Termites: Class S – susceptible
Treatability: Class – 3-4 – poorly or not permeable
Use Class Covered by Natural Durability: Class 2 – inside or under cover (dampness possible)

Log Buoyancy: Does not float
Log Conservation: Moderate (treatment recommended)
Drying Rate: Normal to slow
Drying Risk of Distortion: High risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: High risk

Blunting Effect: Normal
Machining Tool: Tungsten carbide
Suitability for Peeling: Not recommended or without interest
Suitability for Slicing: Good
Assembly Nailing Screwing: Good but pre-boring necessary
Assembly Notes: High specific gravity: important that gluing be performed in compliance with the code of practice and instructions for the glue used.
Additional Notes: Difficulties during finishing caused by resin or tannin exudations
End Uses: Framing, House framing, Stairs (inside), Flooring, Panelling, Sliced veneer, Glued Laminated, Seats, Interior joinery, Marquetry, Built-in furniture or mobile item

Source 1: Tropical Timber Atlas, Editions Quae, e-ISBN 978-2-7592-2770-9