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): 16.3
Min PZC read (of all measurements): 11.4
Max PZC average on one log: 13.9
Min PZC average on one log: 13.9
PZC Average of all logs: 13.9

Species: pentaclethra macrophylla
Family: Fabaceae
Clade: Angiospermae
Description: Pentaclethra macrophylla, the African oil bean tree, is a large evergreen tree native to tropical Africa, known for its pinnate leaves, creamy-white flower spikes, and large woody pods containing edible, protein-rich seeds.
Other Local Names: Essiri, Ovala

Reference Colour: Red brown
Texture: Coarse
Grain: Straight or interlocked
Interlocked Grain: Slight
Notes: Sapwood pale yellow with occasional brown spots. Heartwood dark brown with dark coloured veins on the radial face. Tangential face slightly striped.

Diameter: 50÷100cm
Density @12% MC: 950kg/m³
Janka Hardness: 2640lbf
Crushing Strength @12%MC: 78MPa
Static Bending Strength @12%MC: 122MPa
Longitudinal Modulus of Elasticity E: 19.16GPa
Volumetric Shrinkage Coefficient: 0.46% per %
Total Tangential Shrinkage TS: 9.9%
Total Radial Shrinkage TS: 5.4%
T/R Anisotropy Ratio: 1.8-
Fibre Saturation Point: 25%
Thermal Conductivity: 0.31W/mk
Sapwood Thickness: 2÷5cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 1-2 – very durable to durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class M – moderately durable
Treatability: Class – 3-4 – poorly or not permeable
Use Class Covered by Natural Durability: Class 4 – in ground or fresh water contact Atlas of Tropical Timber Species MUBALA

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

Blunting Effect: Normal
Machining Tool: Tungsten carbide
Suitability for Peeling: Not recommended or without interest
Suitability for Slicing: Not recommended or without interest
Sawing Machining Notes: Logs must be extracted and sawn as soon as possible after felling to limit the risks of splits and distortions.
Assembly Nailing Screwing: Good but pre-boring necessary
Assembly Notes: Very high specific gravity: important that gluing be performed in compliance with the code of practice and instructions for the glue used.
End Uses: Pit props, Bridges (parts in contact with water or, Heavy carpentry ground), Vehicle or container flooring, Bridges (parts not in contact with water, or ground), Tool handles (resilient woods), Poles, Exterior joinery, Cooperage, Industrial or heavy flooring, Hydraulic works (fresh water), Stakes, Sleepers, Decking

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