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Strength and mechanical properties
Its name is an English contraction of the
Native American "powcohicora." In Eastern North America, it survived
the catastrophic changes of the Glacial Epoch, some 50 million years
ago. Thus, it is the first strictly American hardwood species. Westward
trekking pioneers made hickory a prerequisite for their wagon wheels.
Later, the Wright Brothers whittled hickory for their "flying contraption."
Hickory sawdust and chips are used to flavor meat by smoking. Commercially,
the pecan is the most important native North American nut tree and
it is the state tree of Texas. Pecan was a Native American name
given to any nut hard enough to require cracking with a stone. Native
Americans, particularly in the Northeast, used hickory for their
bows.
Where it Grows
Eastern U.S., principal commercial areas: Central and Southern states.
Tree height ranges from 60 to 120 feet. Hickories grow slowly and
it is not unusual for a tree to take 200 years to mature.
Main Uses
Tool handles, furniture, cabinetry, flooring, paneling, wooden ladders,
dowels and sporting goods.
Relative Abundance
2.2 percent of total U.S. hardwoods commercially available.
Did You Know?
Andrew Jackson, seventh president of the U.S., was nicknamed
"Old Hickory" because of his toughness during disputes.
General Description
The hickories are an important group within the Eastern hardwood
forests. Botanically they are split into two groups; the true hickories,
and the pecan hickories (fruit bearing). The wood is virtually the
same for both and is usually sold together. Hickory is the hardest,
heaviest and strongest American wood. The sapwood of hickory is
white, tinged with inconspicuous fine brown lines while the heartwood
is pale to reddish brown. Both are coarse-textured and the grain
is fine, usually straight but can be wavy or irregular.
Working Properties
The heaviest of American hardwoods, the hickories can be difficult
to machine and glue, and are very hard to work with hand tools,
so care is needed. They hold nails and screws well, but there is
a tendency to split so pre-boring is advised. The wood can be sanded
to a good finish. The grain pattern welcomes a full range of medium-to-dark
finishes and bleaching treatments. It can be difficult to dry and
has high shrinkage.
Physical Properties
The density and strength of the hickories will vary according
to the rate of growth, with the true hickories generally showing
higher values than the pecan hickories. The wood is well-known for
its very good strength and shock resistance and it also has excellent
steam-bending properties. Extremely tough and resilient, even texture,
quite hard and only moderately heavy.
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