Description
Uses
sleepers; heavy construction; bridge decking; planking; heavy carpentry; industrial flooring; joinery; vehicle bodies; boat building (ribs, stem, knees, framing}
Wood Description
| Sapwood | distinct, light yellowish grey (S-IScm) |
|---|---|
| Heartwood | dark brown, reddish brown or yellowish red brown with white or brown streaks |
| Grain | straight to interlocked, very variable |
| Texture | medium to coarse |
| Remark | slightly sour odour; rather harsh to the touch |
Technological Characteristics
| Physical properties | |
|---|---|
| Green density (g/cm³) | 1.30 |
| Air-dry density at 12% (g/cm³) | 0.99 |
| Basic specific gravity | 0.78 |
| Total tangential shrinkage (%) | 9.5 |
| Total radial shrinkage (%)3.5 | 5.8 |
| Total volumetric shrinkage (%) | 17.6 |
Processing
| Sawing | power required; fairly difficult; tendency to spring |
|---|---|
| Blunting effect | moderate to high |
| Drying | dlfflcult; a slow drying 11nd c11reful piling are recommended to reduce degrade U.S. kiln schedulc T2·C2 for 25-38 mm (4/4 to 6/4) stock and T2-CI for 50 mm (8/4) stock or British schedule B (25 mm) risks of distortion: more or less high risks of checking; more or less high |
| Machining | difficulties due to hardness and highly Interlocked grain (pick up and chipped grain) |
| Glueing | special precaution needed |
| Nailing | pre-boring necessary; good holding of nails; |
| Finishing | good |
| Veneering | – |
