Sep 30, 2015
Ash, vulnerable species, ash is an ancient remnant, a wider range, but mostly sporadic, is a national-level key protective wild plants (State Council approved on August 4, 1999). Due to overcutting, quantity and more reduce the current rare trees. Ash resilient material, texture, appearance, is a deciduous tree, growing to 30 meters, was a precious tree species in Northeast, North, we can produce all kinds of furniture, musical instruments, sports equipment, vehicles, machinery and special building materials. Meanwhile, for a study on the flora of the tertiary and Quaternary glacial climate is of scientific significance. Ash is mainly produced in Northeast China, North China and other places. Is a yellow-white (sapwood) or brown yellow (heartwood). Rings but clearly no uniform, wooden structure of coarse, straight, the pattern is beautiful, shiny, and large hardness. Ash has good flexibility, toughness, wear resistance, moisture resistance and so on. But drying difficult, such as warpage. Processing performance is good, but you should avoid tearing. Cut smooth, paint, a sticky properties.
Processing performance: Ash processing performance can be fixed with nails, screws and glues well, and can be made good by staining and polishing the surface. For dry climates, and aging is very slight performance changes.
Physical properties: relative to its weight, Ash has very good overall strength properties, good seismic and steam bending strength.
Durability: no heartwood rot-resistant force of Fraxinus mandshurica, white wood is vulnerable to flour beetle and the common furniture beetle boring food. Heart wood preservative treatment with moderate resistance to penetration, white wood with penetration.
Practicality: the good materials for flooring and furniture. Like white, precious wood species such as oak, walnut, very high value