Black walnut:
The color of the bark of old wood changes from light brown to dark brown with black, the bark of young wood is scaly, and the bark of mature wood is cracked. The sapwood is yellowish-brown, the heartwood is brownish with purple, and there are often irregular dark or light streaks on the wood surface. The proportion of raw wood is G.0.51? The absolute dry specific gravity is 0.56. The wood is straight or irregular, and the irregular wood is valuable because of its high decorativeness and thick wood.
Ash:
The air-dry density is 0.60~0.72g/cm3, which is more resistant to corrosion. This wood is usually straight, with a rough, uniform grain. Good workability can be fixed well with nails, screws, and glue, can be dyed and polished to obtain a good surface
1. The cut surface is very smooth, and the paint and adhesive properties are also very good. And the aging is very slight, and the performance change is small, so the practicality of solid wood is very large.
2. Ashwood has good processing performance, can be fixed well with nails, screws, and glue, and can be dyed and polished to obtain a good surface effect.
3. Ash has a tough material, beautiful texture, excellent overall strong performance, good seismic resistance, and steam bending strength, and is a good material for making furniture.
4. Durability: Heartwood has moderate penetration resistance to anti-corrosion treatment agents, while white wood (sapwood) has penetration power. Ashwood is very suitable for dry climates, its aging is very slight, and the heartwood changes little.
The difference between ash and black walnut
1. Price, black walnut is more expensive than ash
The market price of black walnut is about 20,000 yuan per cubic meter, and pure solid wood furniture made of black walnut is naturally much more expensive than other general furniture.
2. Ashwood has good processing performance and can be dyed and polished to obtain a good surface. It is suitable for American high-end furniture, floors, solid wood coat racks, architectural interior decoration, etc. The price is cheaper than black walnut.
Ashwood has a rough cut surface, average paint, and glue stickiness, and is prone to discoloration for a long time.
Black walnut is resistant to impact and friction, resistant to decay, easy to dry, and less deformed; easy to construct, easy to glue, and other woods are not as good as black walnut in absorbing oily coating.
3. Different cracking performance
Ashwood is easy to dry, but it takes a long time to dry, and the wood shrinks. Drying shrinkage coefficient: diameter shrinkage 0.17%, string shrinkage 0.31%, cracks appear in the wood during rapid drying.
The shrinkage rate of black walnut is very small, making them suitable for changing climates without problems such as cracking.
4. Color appearance
The appearance of ash is similar to that of European locusts, and the heartwood varies from light to dark brown. The wood grain is obvious, coarse-grained. Uses High-end furniture, floors, decorative lines, fine wood products, sports equipment, tool handles, etc.
Black walnut wood has a smooth cutting surface, soft luster, light-dark brown with purple color, the beautiful large parabolic pattern on the cut surface, sometimes wavy curly tree pattern, and "bird peck" needle knots the size of small nails, forming a pleasing to the eye decorative pattern.
