Back to Species

WoodSwatch · The Wood Ledger

Iroko

Milicia excelsa

Also known as: African Teak, Kambala, Mvule, Odum

Technical Spec Sheet

2026-07-14

Iroko wood grain

Reference grain swatch

Janka Hardness
1,260 lbf (5,605 N)
Avg. Dried Weight
660 kg/m³ (41 lb/ft³)
Specific Gravity
0.66
Type
Hardwood
Grain
Interlocked, sometimes irregular or wavy
Texture
Medium to coarse
Durability
Very durable, excellent resistance to decay, termites, and marine borers
Region
Africa
Sustainability
Caution — Generally sustainable, though CITES monitoring recommended for some regions

Overview

Iroko is a highly valued African hardwood, often called African Teak due to its similar properties and appearance. Prized for exceptional durability and weather resistance, it serves as an excellent alternative to genuine teak for exterior applications at a more accessible price point.

The heartwood matures from pale yellow to golden or medium brown, sometimes with darker streaks. Density averages 660 kg/m³ when dried, with a Janka hardness of 1,260 lbf. The interlocked grain produces attractive ribbon striping on quartersawn surfaces. Very stable in service.

Workshop Notes

Blunting Effect

Moderate - contains mineral deposits that can dull cutting edges

Gluing

Good gluing properties, though oily surface may require preparation

Finishing

Takes finishes well, though natural oils may slow drying time

Steam Bending

Moderate steam bending characteristics due to interlocked grain

Scent

Distinct, somewhat unpleasant odor when worked, can cause irritation

Assessment

Strengths

  • Excellent natural durability
  • Good dimensional stability
  • Resistant to decay and insects
  • Weather resistant
  • Cost-effective teak alternative

Weaknesses

  • Interlocked grain can cause planing difficulties
  • Contains irritant compounds
  • Can cause allergic reactions
  • Color inconsistency between boards

Common Uses

Outdoor furniture · Boat building · Flooring · Exterior joinery · Garden furniture · Veneer · Countertops