American Black Gum (Black Tupelo) Wood

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American Black Gum (Black Tupelo) Wood
Categories:	Wood and Natural Products; Wood; Hardwood
Material Notes:	Diffuse-Porous Hardwood Property values marked by an asterisk (*) have been taken from an unusually old reference source.
Key Words:	Nyssa sylvatica; Lumber, Timber
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Physical Properties	Original Value	Comments

Density	0.460 g/cc	Oven Dry Weight/Unseasoned Volume
	45.0 lb/ft³	Unseasoned*

Mechanical Properties	Original Value	Comments
Hardness, Wood Indentation	2800 N	Side. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	3500 N	End. Force required to imbed a 0.444 inch steel ball to one-half its diameter
Tensile Strength, Ultimate	570 psi	Perpendicular to Grain*
Modulus of Rupture	7.00 ksi	Static Bending*
Flexural Yield Strength	4000 psi	Fiber Stress at Elastic Limit; Static Bending*
Flexural Modulus	1030 ksi	Static Bending*
Compressive Strength	600 psi	Perpendicular to Grain*
	2440 psi	Parallel to Grain*
	3040 psi	Max Crushing Strength Parallel to Grain*
Shear Strength	1100 psi	Parallel to Grain*
Impact	4.0	in-lb/in³; Work to Elastic Limit; Unseasoned Sample; Impact Bending*
	9800	psi; Fiber Stress at Elastic Limit; Unseasoned Sample; Impact Bending*
Work to Elastic Limit	0.910 in-lb/in³	Static Bending*
Work to Maximum Load	8.00 in-lb/in³	Static Bending*
Cleavage	49.0 kN/m	Radial surface of failure, Unseasoned*
	67.0 kN/m	Tangential surface of failure, Unseasoned*

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.860 BTU-in/hr-ft²-°F	Oven Dry
	1.00 BTU-in/hr-ft²-°F	12% Moisture Content
Shrinkage	4.4 %	Radial; Unseasoned to Oven Dry*
	7.7 %	Tangential; Unseasoned to Oven Dry*
	13.3 %	Volumetric; Unseasoned to Oven Dry*

References for this datasheet.

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PTSA010 / 71239

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