Osan
Scientific name: Pouteria altissima
Overview
Osan is a heavy, durable tropical hardwood native to the rainforests of West and Central Africa. Although not widely known in international timber markets, the species is respected locally for its strength, durability, and versatility in both structural and decorative applications. The wood produces an attractive golden brown to reddish-brown heartwood with a fine texture and good natural wear resistance, making it suitable for furniture, flooring, cabinetry, and general construction.
Quick Facts
- Common Name: Osan
- Scientific Name: Pouteria altissima
- Region: African Hardwoods (West & Central Africa)
- Tree Size: 100–150 ft tall, 3–5 ft trunk diameter
- Average Dried Weight: Approximately 47 lbs/ft³ (755 kg/m³)
- Janka Hardness: Approximately 1,650 lbf
- Color: Golden brown to reddish brown
- Grain: Straight to slightly interlocked
- Texture: Fine and uniform
Identification Characteristics
Osan develops a warm golden brown heartwood that gradually matures into a deeper reddish-brown color with age. The grain is generally straight but may occasionally be slightly interlocked. Its fine, even texture produces smooth finished surfaces with a subtle natural luster.
Key identification traits include:
- Golden brown to reddish-brown heartwood
- Fine and even texture
- Straight to slightly interlocked grain
- Moderate natural luster
- Heavy and durable wood
Working Properties
Osan machines well with both hand and power tools despite its moderate density. Slight tear-out can occur where the grain becomes interlocked, but sharp cutting tools usually produce clean results. The wood turns, glues, sands, and finishes well, making it suitable for a wide variety of woodworking projects.
- Machines well overall
- Turns and carves well
- Sands to a smooth surface
- Accepts stains, oils, and clear finishes well
- Occasional tear-out may occur in interlocked grain
Safety Note
Wood dust may cause irritation in sensitive individuals. Appropriate dust collection and respiratory protection are recommended during machining.
Common Uses
Thanks to its strength, attractive appearance, and good machining characteristics, Osan is used in a variety of interior and structural woodworking applications, including:
- Furniture
- Cabinetry
- Flooring
- Interior joinery
- Architectural millwork
- Decorative veneer
- Woodturning
- General construction
Sustainability & Notes
Osan is distributed throughout portions of West and Central Africa and is harvested primarily for regional use rather than large-scale international export. While the species is not currently considered heavily threatened, responsible forest management and sustainable harvesting practices remain important to protect tropical forest ecosystems and ensure future availability.
Comparative Notes & Related Species
Mukangu – Another African Pouteria species with similar density, color, and woodworking characteristics.
Moabi – A heavier African hardwood valued for its exceptional durability and premium furniture applications.
Makore – A fine-textured African hardwood with a richer reddish appearance and excellent finishing qualities.
Related Guides
Best Woods for Furniture Making – Explores the characteristics that make certain hardwoods well suited for quality furniture construction.
Understanding Interlocked vs Straight Grain – Explains how grain direction affects machining, appearance, and woodworking performance.
Moisture Content & Long-Term Stability – Learn how proper drying and moisture control help maintain dimensional stability and long-term performance in hardwoods.
Compare Wood Properties
See how this species ranks in density and hardness using our Wood Density & Janka Hardness Chart. You can also explore Hardest Woods, Softest Woods, and Most Dense Woods for quick comparisons.
Collector Notes
Osan is an excellent collector species because it represents one of Africa’s lesser-known tropical hardwoods. Its warm coloration, fine texture, and dependable working characteristics make it a valuable addition to collections focused on African timbers or the diverse members of the Pouteria genus. Although less common than many commercial African hardwoods, its rarity outside specialty lumber markets adds to its appeal for serious wood collectors.
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When submitting photos, please include the common name, scientific name (if known), a brief description, and any information you would like us to share with the image.
Wood Sample Collection
This species is part of an ongoing effort to document and preserve wood samples from around the world.
Learn more about contributing to the collection:
Resources
Authoritative botanical and forestry references used in compiling information about this species include:
• USDA Forest Service – Wood Handbook: Wood as an Engineering Material
https://www.fpl.fs.usda.gov/products/publications/
• The Wood Database – Global reference for wood identification, physical properties, and woodworking characteristics
https://www.wood-database.com/
• Royal Botanic Gardens, Kew – Plants of the World Online – Botanical taxonomy and species distribution database
https://powo.science.kew.org/
• International Union for Conservation of Nature (IUCN Red List) – Global conservation status assessments
https://www.iucnredlist.org/
• Convention on International Trade in Endangered Species (CITES) – International trade regulations for protected plant species
https://cites.org/
Additional forestry publications, academic research papers, and regional timber studies may also be referenced where available.
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Availability & Where to Buy
Exotic hardwood availability can vary significantly depending on region, sustainability regulations, and supplier inventory.
As this archive grows, recommended suppliers and specialty wood retailers will be listed here to help woodworkers locate responsibly sourced material.
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