Eastern white pine
Pinus strobus
Eastern white pine measures 380 lbf on the Janka scale, about 29% as hard as northern red oak.
- No other wood in the tables has a higher T/R ratio.
- No wood in the tables shrinks less through the thickness; only ceiba matches it.
- Only seven of the 155 woods are softer.
- It is soft and steady at once, in the lowest quarter of the list for both hardness and shrinkage across the face.
U.S. hardwoodsU.S. softwoodsImported woodsNorthern red oak
Six measures
Eastern white pineU.S. softwoods medianOther woods
Cupping tendency
2.901st highest of 15556% above the U.S. softwoods median1.092.90Janka hardness
380 lbf1,690 N8th softest of 15531st of 37 U.S. softwoods240 lbf3,680 lbfDensity
0.340.35 at 12% MC13th lightest of 1550.250.96Bending strength
8,600 psi59.3 MPa15th weakest of 1554,300 psi29,900 psiShrinkage across the face
6.1%radial 2.1%22nd lowest of 1553.5%12.7%Stiffness
1.24 M psi8.6 GPa23rd most flexible of 1550.54 M psi4.06 M psi
How much it moves
Total movement is small, but most of it runs along the rings (T/R 2.90), so a flatsawn board still loses 2.9 times the width of a quartersawn one.
0.37 in.
off a 6-inch flatsawn board, green to oven-dry; quartersawn 0.13 in.
- Tangential
- 6.1%
- Radial
- 2.1%
- Volume
- 8.2%
- T/R ratio
- 2.90 (155th most stable of 155)
End view, shrinkage drawn 3× life size.
Closest substitutes
- Sugar pine
Same hardness · same density · shrinks 0.5 points less across the face
- Redwood (young-growth)
10% harder · same density · shrinks 1.2 points less across the face
- Western redcedar
8% softer · 9% lighter · shrinks 1.1 points less across the face
Among the pines
12th hardest of 13, lbf; the neighbours either side are shown, the rest are on the pines page.
Laboratory values
Its most unusual laboratory figure is shear strength: 9th lowest of the 154 woods with a published value.
| Property | Green | Dry, 12% MC | Change when dried | Metric, 12% MC |
|---|---|---|---|---|
| Side hardness | 290lbf | 380lbf | +31% | 1,690N |
| Shear parallel to grain | 680psi | 900psi | +32% | 6.20MPa |
| Impact bending | 17in. | 18in. | +6% | 457mm |
| Modulus of rupture | 4,900psi | 8,600psi | +76% | 59.3MPa |
| Compression parallel to grain | 2,440psi | 4,800psi | +97% | 33.1MPa |
| Compression perpendicular | 220psi | 440psi | +100% | 3.00MPa |
| Work to maximum load | 5.20in-lbf/in³ | 6.80in-lbf/in³ | +31% | 46.9kJ/m³ |
| Modulus of elasticity | 0.99M psi | 1.24M psi | +25% | 8.55GPa |
| Tension perpendicular | 250psi | 310psi | +24% | 2.10MPa |
Wood Handbook Table 5-3b, Table 4-3. Data & method · Guides