Peroba de campos
Paratecoma peroba
Peroba de campos measures 1,600 lbf on the Janka scale, 24% harder than northern red oak.
- It pairs hardness with little movement: harder than 79% of the woods, yet in the lowest quarter for shrinkage across the face.
- On the Janka scale its nearest neighbours are honeylocust at 1,580 lbf and opepe at 1,630 lbf.
U.S. hardwoodsU.S. softwoodsImported woodsNorthern red oak
Six measures
Peroba de camposImported woods medianOther woods
Shrinkage across the face
6.6%radial 3.8%32nd lowest of 1553.5%12.7%Janka hardness
1,600 lbf7,117 N34th hardest of 15529th of 65 imported woods240 lbf3,680 lbfDensity
0.6236th heaviest of 1550.250.96Bending strength
15,400 psi106.2 MPa46th strongest of 1554,300 psi29,900 psiStiffness
1.77 M psi12.2 GPa63rd stiffest of 1550.54 M psi4.06 M psiCupping tendency
1.7466th lowest of 1551.092.90
How much it moves
Its face shrinkage of 6.6% is in the lowest quarter of the list, with an ordinary T/R ratio of 1.74.
0.40 in.
off a 6-inch flatsawn board, green to oven-dry; quartersawn 0.23 in.
- Tangential
- 6.6%
- Radial
- 3.8%
- Volume
- 10.5%
- T/R ratio
- 1.74 (66th most stable of 155)
End view, shrinkage drawn 3× life size.
Closest substitutes
- Honeylocust
1% softer · 3% lighter · same face shrinkage
- Sepetir
12% softer · 10% lighter · shrinks 0.4 points more across the face
- Peroba rosa
8% harder · 6% heavier · shrinks 0.2 points less across the face
Woods of similar hardness
The eight nearest on the Janka scale, lbf.
Laboratory values
| Property | Dry, 12% MC | Metric, 12% MC |
|---|---|---|
| Shear parallel to grain | 2,130psi | 14.7MPa |
| Compression parallel to grain | 8,880psi | 61.2MPa |
| Side hardness | 1,600lbf | 7,117N |
| Modulus of rupture | 15,400psi | 106.2MPa |
| Work to maximum load | 10.1in-lbf/in³ | 69.6kJ/m³ |
| Modulus of elasticity | 1.77M psi | 12.2GPa |
The handbook publishes only values at 12% moisture content for this wood; green values and some tests are not given.
Wood Handbook Table 5-5b, Table 4-4. Data & method · Guides