Hemlock
Denominación científica:
Tsuga heterophylla Sarg.
Procedencia geográfica:
West Coast of North America
- Sapwood: lightly whitter than heartwood.
- Heartwood: light brown.
- Fiber: straight and rarely wavy.
- Grain: medium size to rough.
- Characteristic defects: small lively knots.
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
Impregnabilidad
- Sapwood: medium capacity of being impregnated.
- Heartwood: low capacity of being impregnated.
Propiedades mecánicas
- Resistance to static flexion 780 kg/cm2.
- Elasticity module 108,000 kg/cm2.
- Resistance to compression 450 kg/cm2.
Mecanización
- Sawing process: easy with no difficulties.
- Drying process: slow but easy to carry out, cracks and deformations are not frequent.
- Planing process: no difficulties.
- Gluing process: no difficulties.
- Nailing and screwing process: no difficulties.
- Finish: no difficulties.
Propiedades físicas
- Apparent density at 12% humidity 480 kg/m3 light wood.
- Dimensional stability
- - Volumetric contraction coefficient 0.41 % stable wood.
- - Relation between contractions 1.75% no tendency to deformity.
- Hardness (Chaláis-Meudon) 1,4 softwood.
Observaciones
-
Ocasionalment pot presentar bosses de resina
