Dark red meranti
Shorea spp. (lauan-meranti group)
Dark red meranti measures 780 lbf on the Janka scale, 40% softer than northern red oak.
- Of the three merantis in the handbook, none is harder or stiffer, and none shrinks less across the face.
- Parana-pine 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
Dark red merantiImported woods medianOther woods
Cupping tendency
2.0836th 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 lbfStiffness
1.77 M psi12.2 GPa63rd stiffest of 1550.54 M psi4.06 M psiShrinkage across the face
7.9%radial 3.8%72nd highest of 1553.5%12.7%Bending strength
12,700 psi87.6 MPa74th weakest of 1554,300 psi29,900 psi
How much it moves
Most of its movement runs along the rings (T/R 2.08): quartersawn, the same board would lose 0.23 in. instead of 0.47 in.
0.47 in.
off a 6-inch flatsawn board, green to oven-dry
- Tangential
- 7.9%
- Radial
- 3.8%
- Volume
- 13.1%
- T/R ratio
- 2.08 (118th most stable of 155)
End view, shrinkage drawn 3× life size.
Closest substitutes
- Red maple
22% harder · 6% heavier · shrinks 0.3 points more across the face
- Yellow meranti
1% softer · same density · shrinks 0.1 points more across the face
- Determa
15% softer · 13% heavier · shrinks 0.3 points less across the face
Among the merantis
1st hardest of 3, lbf.
Laboratory values
| Property | Green | Dry, 12% MC | Change when dried | Metric, 12% MC |
|---|---|---|---|---|
| Work to maximum load | 8.60in-lbf/in³ | 13.8in-lbf/in³ | +60% | 95.1kJ/m³ |
| Side hardness | 700lbf | 780lbf | +11% | 3,470N |
| Compression parallel to grain | 4,720psi | 7,360psi | +56% | 50.7MPa |
| Modulus of elasticity | 1.50M psi | 1.77M psi | +18% | 12.2GPa |
| Shear parallel to grain | 1,110psi | 1,450psi | +31% | 10MPa |
| Modulus of rupture | 9,400psi | 12,700psi | +35% | 87.6MPa |
Wood Handbook Table 5-5b, Table 4-4. Data & method · Guides