Smart, Cost-Effective, Treasured for Generations.

Hickory and Pecan

Carya spp
 
 

Stain Selector

Clear

Light

Medium

Dark

 

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.

Availability

Readily available, more limited if sold selected for color as either red or white hickory.

Working Properties


Machining

 
 
 
 
 
Poor
Good

Nailing

 
 
 
 
 
Poor
Good

Screwing

 
 
 
 
 
Poor
Good

Gluing

 
 
 
 
 
Poor
Good

Finishing

 
 
 
 
 
Poor
Good
 

Strength and Mechanical Properties (inch-pound)a


 

Static Bending

Moisture Content

Specific Gravity (b)

Modulus of Rupture
(lbf/in2)

Modulus of Elasticity (c)
(106 lbf/in2)

Work to Maximum Load
(in-lbf/in3)

Green-12% 0.56-0.75 9,100-20,200 1.29-2.26 13.8-31.7

Impact Bending
to Grain
(in)

Compression
Parallel to Grain
(lbf/in2)

Compression
Perpendicular to Grain
(lbf/in2)

Shear
Parallel to Grain
(lbf/in2)

Tension
Perpendicular to Grain
(lbf/in2)

Side Hardness
(lbf)

— -104 3,920-9,210 760-1,980 — -2,430 — -680 — -1,820

a) Results of tests on small clear specimens in the green and air-dried conditions. Definition of properties; impact bending is height of drop that causes complete failure, using 0.71-kg (50 lb.) hammer; compression parallel to grain is also called maximum crushing strength; compression perpendicular to grain is fiber stress at proportional limit; shear is maximum shearing strength; tension is maximum tensile strength; and side hardness is hardness measured when load is perpendicular to grain.

b) Specific gravity is based on weight when ovendry and volume when green or at 12% moisture content

c) Modulus of elasticity measured from a simply supported, center-loaded beam, on a span depth ratio of 14/1. To correct for shear reflection, the modulus can be increased by 10%.