Comprehensive Technical Data
Detailed physical properties, testing standards, and grading criteria for all Green Valley Inc. timber products.
Download Complete DatabaseWood Species Properties
Physical and mechanical properties of our primary hardwood species
African Mahogany
Khaya ivorensis
Common Applications
Sapele
Entandrophragma cylindricum
Common Applications
Iroko
Milicia excelsa
Common Applications
Ebony
Diospyros spp.
Common Applications
Bubinga
Guibourtia spp.
Common Applications
Testing Standards & Methods
All properties measured according to European (EN) and international standards
Density
EN 408Measurement of oven-dry density according to European standards
Moisture Content
EN 13183Moisture content determination using oven-dry method
Bending Strength
EN 408Determination of modulus of elasticity and bending strength
Hardness
EN 1534Janka hardness test for resistance to indentation
Durability
EN 350Natural durability against biological agents classification
Formaldehyde
EN 717-1Formaldehyde emission testing for engineered products
Grading Standards
NHLA (National Hardwood Lumber Association) grading criteria
| Grade | Min. Clear Face | Allowed Defects | Typical Use |
|---|---|---|---|
Premium (FAS) First and Seconds - highest quality grade | 83.3% | Minimal pin knots, uniform color | High-end furniture, visible surfaces |
Select High quality with minor character marks | 70% | Small tight knots, minor color variation | Quality furniture, cabinetry |
No. 1 Common Sound wood with character | 66.7% | Sound knots, color variation allowed | General furniture, flooring |
No. 2 Common Utility grade | 50% | Knots and defects allowed if sound | Construction, industrial use |
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