Parana-pine
Araucaria angustifolia
Parana-pine measures 780 lbf on the Janka scale, 40% softer than northern red oak.
- Dark red meranti has exactly the same Janka figure.
- On the Janka scale its nearest neighbours are yellow meranti at 770 lbf and mahogany at 800 lbf.
U.S. hardwoodsU.S. softwoodsImported woodsNorthern red oak
Six measures
Parana-pineImported woods medianOther woods
Cupping tendency
1.9847th highest of 1551.092.90Density
0.4658th lightest of 1550.250.96Janka hardness
780 lbf3,470 N61st softest of 15550th of 65 imported woods; 40% below the imported woods median240 lbf3,680 lbfBending strength
13,500 psi93.1 MPa68th strongest of 1554,300 psi29,900 psiStiffness
1.61 M psi11.1 GPa71st most flexible of 1550.54 M psi4.06 M psiShrinkage across the face
7.9%radial 4.0%72nd highest of 1553.5%12.7%
How much it moves
Both its face shrinkage (7.9%) and its T/R ratio (1.98) sit in the middle half of the list.
0.47 in.
off a 6-inch flatsawn board, green to oven-dry; quartersawn 0.24 in.
- Tangential
- 7.9%
- Radial
- 4.0%
- Volume
- 11.6%
- T/R ratio
- 1.98 (108th most stable of 155)
End view, shrinkage drawn 3× life size.
Closest substitutes
- Virginia pine
5% softer · 2% lighter · shrinks 0.7 points less across the face
- Shortleaf pine
12% softer · 2% heavier · shrinks 0.2 points less across the face
- Tamarack
24% softer · 6% heavier · shrinks 0.5 points less across the face
Woods of similar hardness
The eight nearest on the Janka scale, lbf.
Laboratory values
| Property | Green | Dry, 12% MC | Change when dried | Metric, 12% MC |
|---|---|---|---|---|
| Compression parallel to grain | 4,010psi | 7,660psi | +91% | 52.8MPa |
| Side hardness | 560lbf | 780lbf | +39% | 3,470N |
| Shear parallel to grain | 970psi | 1,730psi | +78% | 11.9MPa |
| Modulus of rupture | 7,200psi | 13,500psi | +88% | 93.1MPa |
| Work to maximum load | 9.70in-lbf/in³ | 12.2in-lbf/in³ | +26% | 84.1kJ/m³ |
| Modulus of elasticity | 1.35M psi | 1.61M psi | +19% | 11.1GPa |
Wood Handbook Table 5-5b, Table 4-4. Data & method · Guides