Ezomatsu

Picea Jezoensis

Softwood

Family: Pinaceae

In Japan, this species distributed in Hokkaido is called "Ezomatsu" including acacia pine which is closely related. It is distributed in commerce as "Ezo Todo" together with Todomatsu. Durability of this wood is high and this is a useful species in a cold district. It is designated as "tree of Hokkaido."

Ezomatsu|Picea Jezoensis
Forest of Aka Ezomatsu
Ezomatsu|Picea Jezoensis
Cutting surface of Ezomatsu

FEATURES

There may be not much difference in color between the heartwood and the sapwood, but the heartwood is in pink and it has fine texture. With the time after cutting, the color becomes darker. The wood grain goes straight and is beautiful, and it is often used for building materials. There is also a characteristic of having almost no smell. Although it has an axially intercellular canal (resin canal), "resinous exudate" does not much seep out on the material surface.

USAGE

The species is used as building materials, fittings, pulp, wood wool, paper‐thin sheets of wood and even for musical instruments. Houses in Hokkaido are built using Ezomatsu and Todomatsu, which is very common in Hokkaido. In addition, because the acoustic characteristics fits well with instruments, the lumber is used for violin, piano and other instruments. It also becomes pulp material used for the cone of the speaker. In addition to afforestation, it is planted as windbreak forest, park tree, or garden tree.

Charactristic Table

Specific gravity in
air-dry
Mean comefficient shrinkage for 1% change
of moisture content(%)
Surength(Mpa) Modulus of elastcity
in bending(GPa)
Radial direction Tangential direction Bending surenght Longitudinal
compressive Surenght
Shear strength
parallel to grain
0.43 0.15 0.29 69 34 6.9 8.8