daniellia oliveri, Fabaceae, Angiospermae (Hardwood)

Other names: Daniellia, Jatin, Nsou, Singa n’dola, Ogea, Lonlaviol, Shedua, N’su, Oziya, Bolengu, Gbessi
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: 3
Number of measurements: 9
Max PZC read (of all measurements): 13.8
Min PZC read (of all measurements): 10.9
Max PZC average on one log: 12.5
Min PZC average on one log: 12.5
PZC Average of all logs: 12.5
Species: daniellia oliveri
Family: Fabaceae
Clade: Angiospermae
Description: A large, deciduous West African tree (Fabaceae) with smooth, grey bark, pinnate leaves, and fragrant white flowers, yielding timber and resin from its flat, winged pods.
Other Local Names: Daniellia, Jatin, Nsou, Singa n’dola, Ogea, Lonlaviol, Ogea, Shedua, N’su, Oziya, Bolengu, Ogea, Gbessi
Reference Colour: Brown
Texture: Coarse
Grain: Straight or interlocked
Interlocked Grain: Slight
Notes: Possible presence of brittleheart. Sometimes greenish brown veins in heartwood.
Diameter: 70÷120cm
Density @12% MC: 550kg/m³
Janka Hardness: 690lbf
Crushing Strength @12%MC: 38MPa
Static Bending Strength @12%MC: 66MPa
Longitudinal Modulus of Elasticity E: 9.55GPa
Volumetric Shrinkage Coefficient: 0.43% per %
Total Tangential Shrinkage TS: 6.8%
Total Radial Shrinkage TS: 3.5%
T/R Anisotropy Ratio: 1.9-
Fibre Saturation Point: 30%
Thermal Conductivity: 0.19W/mk
Lower Heating Value: 19950KJ/Kg
Sapwood Thickness: 4÷12cm
Sapwood Demarcation: Not clearly demarcated
Resistance to Decay: Class 4-5 – poorly durable to not durable
Resistance to Dry Wood Borers: Class S – susceptible (risk in all the wood)
Resistance to Termites: Class S – susceptible Atlas of Tropical Timber Species FARO / OGEA* Cross sections of Daniellia thurifera
Treatability: Class 2-3 – poorly to moderately permeable
Use Class Covered by Natural Durability: Class 1 – inside (no risk of dampness)
Durability Notes: This species is listed in the NF EN 350 standard.
Log Buoyancy: Does not float
Log Conservation: Low (treatment necessary)
Drying Rate: Rapid
Drying Risk of Distortion: High risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: No risk or very slight risk
Blunting Effect: Normal
Sawing Tooth: Ordinary or alloy steel
Machining Tool: Ordinary
Suitability for Peeling: Good
Suitability for Slicing: Good
Sawing Machining Notes: Surface often fuzzy. Assembling and gluing sometimes difficult due to warping of dried veneers.
Assembly Nailing Screwing: Good
End Uses: Veneer for interior of plywood, Interior joinery, Built-in furniture or mobile item, Blockboard, Sliced veneer
Source 1: Tropical Timber Atlas, Editions Quae, e-ISBN 978-2-7592-2770-9
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