Western white pine
Pinus monticola
Western white pine measures 420 lbf on the Janka scale, about 33% as hard as northern red oak.
- Drying hardens it more than most: from 260 lbf green, it gains 62% by 12% moisture, where the median wood gains 31%.
- Redwood (young-growth) has exactly the same Janka figure.
- Across all 155 woods it falls in the bottom fifth for hardness and density.
U.S. hardwoodsU.S. softwoodsImported woodsNorthern red oak
Six measures
Western white pineU.S. softwoods medianOther woods
Janka hardness
420 lbf1,868 N16th softest of 15527th of 37 U.S. softwoods240 lbf3,680 lbfDensity
0.350.38 at 12% MC17th lightest of 1550.250.96Bending strength
9,700 psi66.9 MPa33rd weakest of 1554,300 psi29,900 psiStiffness
1.46 M psi10.1 GPa45th most flexible of 1550.54 M psi4.06 M psiShrinkage across the face
7.4%radial 4.1%59th lowest of 1553.5%12.7%Cupping tendency
1.8074th lowest of 1551.092.90
For its weight: stiffness-to-weight 4.17 (17th of 155).
How much it moves
Both its face shrinkage (7.4%) and its T/R ratio (1.80) sit in the middle half of the list.
0.44 in.
off a 6-inch flatsawn board, green to oven-dry; quartersawn 0.25 in.
- Tangential
- 7.4%
- Radial
- 4.1%
- Volume
- 11.8%
- T/R ratio
- 1.80 (74th most stable of 155)
End view, shrinkage drawn 3× life size.
Closest substitutes
- Sitka spruce
21% harder · 6% heavier · shrinks 0.1 points more across the face
- Engelmann spruce
7% softer · 6% lighter · shrinks 0.3 points less across the face
- California red fir
19% harder · 3% heavier · shrinks 0.5 points more across the face
Among the pines
11th hardest of 13, lbf; the neighbours either side are shown, the rest are on the pines page.
Laboratory values
| Property | Green | Dry, 12% MC | Change when dried | Metric, 12% MC |
|---|---|---|---|---|
| Side hardness | 260lbf | 420lbf | +62% | 1,868N |
| Compression parallel to grain | 2,430psi | 5,040psi | +107% | 34.7MPa |
| Shear parallel to grain | 680psi | 1,040psi | +53% | 7.20MPa |
| Compression perpendicular | 190psi | 470psi | +147% | 3.20MPa |
| Modulus of rupture | 4,700psi | 9,700psi | +106% | 66.9MPa |
| Impact bending | 19in. | 23in. | +21% | 584mm |
| Work to maximum load | 5.00in-lbf/in³ | 8.80in-lbf/in³ | +76% | 60.7kJ/m³ |
| Modulus of elasticity | 1.19M psi | 1.46M psi | +23% | 10.1GPa |
| Tension perpendicular | 260psi | not tested | — | — |
Wood Handbook Table 5-3b, Table 4-3. Data & method · Guides