|
Physical & Mechanical Properties of Selected Woods
|
Douglas Fir |
White Oak |
Red Oak |
Teak |
Ipe |
Color* |
3 |
1 |
1-3 |
1-2 |
4 |
Density |
30-40 |
40-50 |
40-50 |
40-50 |
>60 |
Bending Strength (psi) |
12,000-14,500 |
14,500-17,000 |
12,000-14,500 |
12,000-17,000 |
>19,500 |
Stiffness (psi) |
1,800-2,200 |
1,400-1,800 |
1,800-2,200 |
1,000-1,800 |
>3,000 |
Crushing Strength (psi) |
7,000-8,000 |
7,000-8,000 |
6,000-7,000 |
6,000-9,000 |
>10,000 |
Toughness |
3 |
4 |
4 |
2 |
7 |
Hardness |
2 |
4 |
4 |
3-4 |
7 |
Movement |
Small
under 3.0 |
Medium
3.0-4.5 |
--- |
Small,
under 3.0 |
Small,
under 3.0 |
Shrinkage Radial |
3 |
4 |
3 |
1 |
5 |
Shrinkage Tangential |
3 |
5 |
4 |
2 |
4 |
Heartwood Durability |
Moderately durable |
Durable |
Nondurable |
Very durable |
Very durable |
Heartwood Treatability † |
4 |
4 |
2 |
4 |
4 |
* Color Code
- Whitish, pale brown, pale yellow, straw
- Dark brown
- Pink or red tints, including red brown
- Other colors (black, purple, bright yellow, etc.)
† Treatability
- Permeable
- Moderately resistant
- Resistant
- Extremely resistant
|