Table 2. Basic properties of Korean pine
| Anatomical properties |
| Length of tracheid (n = 30) | Width of tracheid (n = 30) | Thickness of cell wall for tracheid (n = 30) |
| Earlywood | Latewood | Earlywood | Latewood | Earlywood | Latewood |
| R section | T section | R section | T section |
| 2.36 mm (0.29)* | 3.12 mm (0.20) | 44.83 μm (6.10) | 31.62 μm (5.22) | 20.88 μm (4.75) | 29.92 μm (2.60) | 2.74 μm (0.24) | 4.73 μm (0.61) |
| Physical properties |
| Specific gravity (n = 100) | Total shrinkage (n = 100) |
| Green | Air-dry | Oven-dry | Linear | Volumetric |
| L direction | R direction | T direction |
| 0.380 (0.024) | 0.399 (0.022) | 0.421 (0.021) | 0.49% (0.21) | 2.24% (0.57) | 7.19% (1.62) | 9.70% (1.92) |
| Mechanical properties |
| Bending strength | Compression strength parallel to the grain | Tensile strength parallel to the grain |
| Air-dry (12% MC*) (n = 25) | Green (n = 20) | Air-dry (12% MC) (n = 25) | Green (n = 28) | Air-dry (10.9% MC) (n = 16) | Green (n = 16) |
| 73.3 MPa (7.9) | 33.6 MPa (3.9) | 38.1 MPa (4.9) | 16.0 MPa (2.0) | 77.1 MPa (11.6) | 50.1 MPa (6.5) |
| Shear strength | Hardness |
| R section | T section | C section | R section | T section |
| Air-dry(13% MC)(n = 15) | Green(n = 16) | Air-dry(13% MC)(n = 18) | Green(n = 16) | Air-dry(12% MC)(n = 10) | Air-dry(12% MC)(n = 10) | Air-dry(12% MC)(n = 10) |
| 7.4 MPa (0.8) | 4.3 MPa (0.4) | 8.0 MPa (0.7) | 4.4 MPa (0.3) | 3.6 kN (0.5) | 2.4 kN (0.3) | 2.4 kN (0.4) |
| Chemical compositions |
| Ash (n = 6) | Extractives (n = 6) | Lignin (n = 6) |
| Acid-insoluble | Acid-soluble | Total |
| 0.27% (0.04) | 3.34% (0.34) | 27.39% (0.29) | 1.73% (0.24) | 29.12% (0.51) |
| Sugars (n = 6) |
| Glucan | XMG** | Arabinan | Total |
| 42.85% (0.44) | 20.23% (0.07) | 1.15% (0.01) | 64.23% (0.37) |
SD in parentheses.
n: number of specimens used in the evaluation or number of repetitions of evaluation.
R section: radial section, T section: tangential section, L direction: longitudinal direction, R direction: radial direction, T direction: tangential direction, C section: cross section,
MC: moisture content,
XMG: xylan + mannan + galactan.