North American Quaking Aspen (Trembling Aspen) Wood

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North American Quaking Aspen (Trembling Aspen) Wood
Categories:	Wood and Natural Products; Wood; Hardwood
Material Notes:	Diffuse-Porous Hardwood. Data is based on small, clear, air-dried samples unless specified. Usual surface texture: Fine Dimensional changes when dried lumber is subjected to variations in humidity during service: Large Resistance to fungal decay (Heartwood in ground contact): Perishable (Under 5 years)/Non-durable (5 to 10 years) Resistance to penetration by preservatives: Extremely resistant Common Applications: Interior joinery, Matches Property values marked by an asterisk (*) have been taken from an unusually old reference source.
Key Words:	Populus tremuloides; Lumber, Timber
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Physical Properties	Metric	English	Comments

Density	0.350 g/cc	0.0126 lb/in³	Oven Dry Weight/Unseasoned Volume
	0.380 g/cc	0.0137 lb/in³	Air Dry (12-15% Moisture Content)
	0.689 g/cc	0.0249 lb/in³	Unseasoned*
Cell Length	1.00 mm	0.0394 in	Mature Wood

Mechanical Properties	Metric	English	Comments
Hardness, Wood Indentation	1200 N	270 lb (f)	End. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	1400 N	315 lb (f)	Side. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	1600 N	360 lb (f)	Side
Tensile Strength, Ultimate	1.24 MPa	180 psi	Perpendicular to Grain*
	1.80 MPa	261 psi	Perpendicular to Grain
Modulus of Rupture	0.0365 GPa	5.30 ksi	Static Bending*
	0.0580 GPa	8.41 ksi	Static Bending
Flexural Yield Strength	20.0 MPa	2900 psi	Fiber Stress at Elastic Limit; Static Bending*
Flexural Modulus	5.79 GPa	840 ksi	Static Bending*
	8.10 GPa	1170 ksi	Static Bending
Compressive Strength	1.38 MPa	200 psi	Perpendicular to Grain*
	2.60 MPa	377 psi	Perpendicular to Grain
	11.2 MPa	1620 psi	Parallel to Grain*
	14.9 MPa	2160 psi	Max Crushing Strength Parallel to Grain*
	29.0 MPa	4210 psi	Parallel to Grain
Poissons Ratio	0.022	0.022	µ_TL, 12% Moisture Content
	0.054	0.054	µ_RL, 12% Moisture Content
	0.374	0.374	µ_LT, 12% Moisture Content
	0.489	0.489	µ_LR, 12% Moisture Content
	0.496	0.496	µ_TR, 12% Moisture Content
Machinability	50 %	50 %	Medium Relative to Other Wood
Shear Strength	4.27 MPa	620 psi	Parallel to Grain*
	5.90 MPa	856 psi	Orientation Unknown
Impact	2.5	2.5	in-lb/in³; Work to Elastic Limit; Unseasoned Sample; Impact Bending*
	6900	6900	psi; Fiber Stress at Elastic Limit; Unseasoned Sample; Impact Bending*
Work to Elastic Limit	0.00448 J/cm³	0.650 in-lb/in³	Static Bending*
Work to Maximum Load	0.0476 J/cm³	6.90 in-lb/in³	Static Bending*

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.0965 W/m-K	0.670 BTU-in/hr-ft²-°F	Oven Dry
	0.115 W/m-K	0.800 BTU-in/hr-ft²-°F	12% Moisture Content
Shrinkage	3.5 %	3.5 %	Radial; Green to Zero Moisture
	6.7 %	6.7 %	Tangential; Green to Zero Moisture
	11.5 %	11.5 %	Volumetric; Green to Zero Moisture

Descriptive Properties
Color	Grey, white to pale brown		Usual for heartwood

References for this datasheet.

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PTSA140 / 71252

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