American Maple, Rock (Sugar Maple)

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American Maple, Rock (Sugar Maple)
Categories:	Wood and Natural Products; Wood; Hardwood
Material Notes:	High resistance to abrasion. Diffuse-Porous Hardwood. Least easy to work with hand tools. Excellent shaping, fair planing, fair steam bending. 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: Medium Resistance to fungal decay (Heartwood in ground contact): Non-durable (5 to 10 years) Resistance to penetration by preservatives: Resistant Common Applications: Excellent flooring timber. Furniture. Sports goods Property values marked by an asterisk (*) have been taken from an unusually old reference source.
Key Words:	Acer saccharum; Lumber, Timber
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Physical Properties	Original Value	Comments

Density	0.570 g/cc	Oven Dry Weight/Unseasoned Volume
	56.0 lb/ft³	Unseasoned*
Cell Length	0.800 mm	Mature Wood

Mechanical Properties	Original Value	Comments
Hardness, Wood Indentation	4000 N	Side. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	4400 N	End. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	6400 N	Side
Tensile Strength, Ultimate	770 psi	Perpendicular to Grain*
Modulus of Rupture	0.109 GPa	In Bending
	9.10 ksi	Static Bending*
Flexural Yield Strength	65.5 MPa	Bending stress at proportional limit
	5000 psi	Fiber Stress at Elastic Limit; Static Bending*
Flexural Modulus	12.4 - 12.63 GPa	In Bending
	1480 ksi	Static Bending*
Compressive Strength	12.5 MPa	Perpendicular to Grain
	53.8 - 54.0 MPa	Parallel to Grain
	750 psi	Perpendicular to Grain*
	3120 psi	Parallel to Grain*
	3860 psi	Max Crushing Strength Parallel to Grain*
Poissons Ratio	0.037	µ_TL, 12% Moisture Content
	0.065	µ_RL, 12% Moisture Content
	0.349	µ_TR, 12% Moisture Content
	0.424	µ_LR, 12% Moisture Content
	0.476	µ_LT, 12% Moisture Content
	0.774	µ_RT, 12% Moisture Content
Machinability	50 %	Medium Relative to Other Wood
Shear Strength	16.1 MPa	Orientation Unknown
	1380 psi	Parallel to Grain*
Impact	5.0	in-lb/in³; Work to Elastic Limit; Unseasoned Sample; Impact Bending*
	12100	psi; Fiber Stress at Elastic Limit; Unseasoned Sample; Impact Bending*
Work to Elastic Limit	1.08 in-lb/in³	Static Bending*
Work to Maximum Load	11.9 in-lb/in³	Static Bending*
Toughness	40.7 J	Tangential
	41.8 J	Radial
Cleavage	66.0 kN/m	Radial surface of failure, Unseasoned*
	90.0 kN/m	Tangential surface of failure, Unseasoned*

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.200 BTU-in/hr-ft²-°F	12% Moisture Content
	1.00 BTU-in/hr-ft²-°F	Oven Dry
Shrinkage	4.9 %	Radial; Green to Zero Moisture
	9.5 %	Tangential; Green to Zero Moisture
	14.9 %	Volumetric; Green to Zero Moisture

Descriptive Properties
Color	Creamy white	Usual for heartwood

References for this datasheet.

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PTSAU / 71304

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