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: 1
Number of specimens: 2
Number of measurements: 6
Max PZC read (of all measurements): 14.7
Min PZC read (of all measurements): 12.6
Max PZC average on one log: 13.8
Min PZC average on one log: 13.8
PZC Average of all logs: 13.8

Species: cylicodiscus gabunensis
Family: Fabaceae
Clade: Angiospermae
Description: A large, fast-growing tropical tree, Cylicodiscus gabunensis is known for its smooth, grey bark, compound leaves, and pale, lightweight timber.
Other Local Names: Adoum, African greenheart, Bokoka, N’duma, Bouémon, Édoum, Oduma, Adadua, Benya, Denya

Reference Colour: Red brown
Texture: Medium
Grain: Interlocked grain
Interlocked Grain: Marked
Notes: Unpleasant odour when green. Heartwood yellow brown becomes red brown on exposure.

Diameter: 90÷150cm
Density @12% MC: 910kg/m³
Janka Hardness: 3090lbf
Crushing Strength @12%MC: 82MPa
Static Bending Strength @12%MC: 134MPa
Longitudinal Modulus of Elasticity E: 22.26GPa
Volumetric Shrinkage Coefficient: 0.61% per %
Total Tangential Shrinkage TS: 7.9%
Total Radial Shrinkage TS: 5.8%
T/R Anisotropy Ratio: 1.4-
Fibre Saturation Point: 25%
Thermal Conductivity: 0.29W/mk
Lower Heating Value: 19410KJ/Kg
Sapwood Thickness: 5÷8cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 1 – very durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class D – durable
Treatability: Class 4 – non-treatable
Use Class Covered by Natural Durability: Class 4 – in ground or fresh water contact Notes. This species is listed in the NF EN 350 standard. This species naturally covers the use class 5 (wood permanently or Atlas of Tropical Timber Species OKAN
Durability Notes: This species is listed in the NF EN 350 standard. This species naturally covers the use class 5 (wood permanently or Atlas of Tropical Timber Species OKAN Cross sections of Cylicodiscus gabunensis regularly submerged in salt water, sea water or brackish water) due to its high specific gravity and its hardness. According to the European standard NF EN 335 of May 2013, performance length might be modified by conditions in which it is used.

Log Buoyancy: Does not float
Log Conservation: Good
Drying Rate: Slow
Drying Risk of Distortion: High risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: High risk

Blunting Effect: Fairly high
Machining Tool: Tungsten carbide
Suitability for Peeling: Not recommended or without interest
Suitability for Slicing: Not recommended or without interest
Sawing Machining Notes: Difficult to obtain good finish due to sometimes highly interlocked grain. Tendency to tear on quartersawn.
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: Substitute for Azobe (Eki) and Greenheart
End Uses: Turned goods ground), Heavy carpentry, Bridges (parts not in contact with water, Vehicle or container flooring or ground), Flooring, Poles, Industrial or heavy flooring, Sculpture, Decking, Hydraulic works (seawater), Bridges (parts in contact with water or, Sleepers

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