Red pine
Pinus resinosa
Red pine measures 560 lbf on the Janka scale, about 43% as hard as northern red oak.
U.S. hardwoodsU.S. softwoodsImported woodsNorthern red oak
Six measures
Red pineU.S. softwoods medianOther woods
Janka hardness
560 lbf2,491 N39th softest of 15514th of 37 U.S. softwoods240 lbf3,680 lbfDensity
0.410.46 at 12% MC43rd lightest of 1550.250.96Bending strength
11,000 psi75.8 MPa51st weakest of 1554,300 psi29,900 psiShrinkage across the face
7.2%radial 3.8%54th lowest of 1553.5%12.7%Cupping tendency
1.8963rd highest of 1551.092.90Stiffness
1.63 M psi11.2 GPa74th most flexible of 1550.54 M psi4.06 M psi
How much it moves
Both its face shrinkage (7.2%) and its T/R ratio (1.89) sit in the middle half of the list.
0.43 in.
off a 6-inch flatsawn board, green to oven-dry; quartersawn 0.23 in.
- Tangential
- 7.2%
- Radial
- 3.8%
- Volume
- 11.3%
- T/R ratio
- 1.89 (91st most stable of 155)
End view, shrinkage drawn 3× life size.
Closest substitutes
- Black spruce
5% softer · 7% lighter · shrinks 0.4 points less across the face
- Western hemlock
4% softer · 2% heavier · shrinks 0.6 points more across the face
- Sitka spruce
9% softer · 10% lighter · shrinks 0.3 points more across the face
Among the pines
8th 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 | 340lbf | 560lbf | +65% | 2,491N |
| Shear parallel to grain | 690psi | 1,210psi | +75% | 8.30MPa |
| Compression perpendicular | 260psi | 600psi | +131% | 4.10MPa |
| Modulus of rupture | 5,800psi | 11,000psi | +90% | 75.8MPa |
| Compression parallel to grain | 2,730psi | 6,070psi | +122% | 41.9MPa |
| Impact bending | 26in. | 26in. | ±0% | 660mm |
| Work to maximum load | 6.10in-lbf/in³ | 9.90in-lbf/in³ | +62% | 68.3kJ/m³ |
| Tension perpendicular | 300psi | 460psi | +53% | 3.20MPa |
| Modulus of elasticity | 1.28M psi | 1.63M psi | +27% | 11.2GPa |
Wood Handbook Table 5-3b, Table 4-3. Data & method · Guides