American Longleaf Pine Wood

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American Longleaf Pine Wood
Categories:	Wood and Natural Products; Wood; Softwood
Material Notes:	Softwood. Relatively easy to work with hand tools. Data is based on small, clear, air-dried samples unless specified. Property values marked by an asterisk (*) have been taken from an unusually old reference source.
Key Words:	Pinus palustris; Lumber, Timber
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Physical Properties	Original Value	Comments

Density	0.550 g/cc	Oven Dry Weight/Unseasoned Volume
	41.0 lb/ft³	Unseasoned*

Mechanical Properties	Original Value	Comments
Hardness, Wood Indentation	2400 N	End. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	2600 N	Side. Force required to imbed a 0.444 inch steel ball to one-half its diameter
Tensile Strength, Ultimate	290 psi	Perpendicular to Grain*
Modulus of Rupture	0.101 GPa	In Bending
	8.70 ksi	Static Bending*
Flexural Yield Strength	64.1 MPa	Bending stress at proportional limit
	5400 psi	Fiber Stress at Elastic Limit; Static Bending*
Flexural Modulus	13.8 GPa	In Bending
	1630 ksi	Static Bending*
Compressive Strength	57.9 - 58.6 MPa	Parallel to Grain
	600 psi	Perpendicular to Grain*
	2840 psi	Parallel to Grain*
	4390 psi	Max Crushing Strength Parallel to Grain*
Poissons Ratio	0.332	µ_LR, 12% Moisture Content
	0.342	µ_TR, 12% Moisture Content
	0.365	µ_LT, 12% Moisture Content
	0.384	µ_RT, 12% Moisture Content
Shear Strength	10.3 MPa	Orientation Unknown
	1070 psi	Parallel to Grain*
Impact	3.5	in-lb/in³; Work to Elastic Limit; Unseasoned Sample; Impact Bending*
	10800	psi; Fiber Stress at Elastic Limit; Unseasoned Sample; Impact Bending*
Work to Elastic Limit	1.00 in-lb/in³	Static Bending*
Work to Maximum Load	8.00 in-lb/in³	Static Bending*
Cleavage	32.0 kN/m	Tangential surface of failure, Unseasoned*
	33.0 kN/m	Radial surface of failure, Unseasoned*

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.960 BTU-in/hr-ft²-°F	Oven Dry
	1.20 BTU-in/hr-ft²-°F	12% Moisture Content
Shrinkage	5.3 %	Radial; Unseasoned to Oven Dry*
	7.5 %	Tangential; Unseasoned to Oven Dry*
	12.4 %	Volumetric; Unseasoned to Oven Dry*

References for this datasheet.

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PTSAI / 71292

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