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	Metric	English	Comments

Density	0.570 g/cc	0.0206 lb/in³	Oven Dry Weight/Unseasoned Volume
	0.897 g/cc	0.0324 lb/in³	Unseasoned*
Cell Length	0.800 mm	0.0315 in	Mature Wood

Mechanical Properties	Metric	English	Comments
Hardness, Wood Indentation	4000 N	899 lb (f)	Side. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	4400 N	989 lb (f)	End. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	6400 N	1440 lb (f)	Side
Tensile Strength, Ultimate	5.31 MPa	770 psi	Perpendicular to Grain*
Modulus of Rupture	0.0627 GPa	9.10 ksi	Static Bending*
	0.109 GPa	15.8 ksi	In Bending
Flexural Yield Strength	34.5 MPa	5000 psi	Fiber Stress at Elastic Limit; Static Bending*
	65.5 MPa	9500 psi	Bending stress at proportional limit
Flexural Modulus	10.2 GPa	1480 ksi	Static Bending*
	12.4 - 12.63 GPa	1800 - 1832 ksi	In Bending
Compressive Strength	5.17 MPa	750 psi	Perpendicular to Grain*
	12.5 MPa	1810 psi	Perpendicular to Grain
	21.5 MPa	3120 psi	Parallel to Grain*
	26.6 MPa	3860 psi	Max Crushing Strength Parallel to Grain*
	53.8 - 54.0 MPa	7800 - 7830 psi	Parallel to Grain
Poissons Ratio	0.037	0.037	µ_TL, 12% Moisture Content
	0.065	0.065	µ_RL, 12% Moisture Content
	0.349	0.349	µ_TR, 12% Moisture Content
	0.424	0.424	µ_LR, 12% Moisture Content
	0.476	0.476	µ_LT, 12% Moisture Content
	0.774	0.774	µ_RT, 12% Moisture Content
Machinability	50 %	50 %	Medium Relative to Other Wood
Shear Strength	9.51 MPa	1380 psi	Parallel to Grain*
	16.1 MPa	2340 psi	Orientation Unknown
Impact	5.0	5.0	in-lb/in³; Work to Elastic Limit; Unseasoned Sample; Impact Bending*
	12100	12100	psi; Fiber Stress at Elastic Limit; Unseasoned Sample; Impact Bending*
Work to Elastic Limit	0.00745 J/cm³	1.08 in-lb/in³	Static Bending*
Work to Maximum Load	0.0820 J/cm³	11.9 in-lb/in³	Static Bending*
Toughness	40.7 J	30.0 ft-lb	Tangential
	41.8 J	30.8 ft-lb	Radial
Cleavage	66.0 kN/m	377 lb/in	Radial surface of failure, Unseasoned*
	90.0 kN/m	514 lb/in	Tangential surface of failure, Unseasoned*

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.0288 W/m-K	0.200 BTU-in/hr-ft²-°F	12% Moisture Content
	0.144 W/m-K	1.00 BTU-in/hr-ft²-°F	Oven Dry
Shrinkage	4.9 %	4.9 %	Radial; Green to Zero Moisture
	9.5 %	9.5 %	Tangential; Green to Zero Moisture
	14.9 %	14.9 %	Volumetric; Green to Zero Moisture

Descriptive Properties
Color	Creamy white		Usual for heartwood

References for this datasheet.

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