American Red Western Cedar (Giant Arborvitae) Wood

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American Red Western Cedar (Giant Arborvitae) Wood
Categories:	Wood and Natural Products; Wood; Softwood
Material Notes:	An acidic timber which may corrode metals under damp conditions and cause iron staining. Conifer Usual surface texture: Coarse Dimensional changes when dried lumber is subjected to variations in humidity during service: Small Resistance to fungal decay (Heartwood in ground contact): Durable (15 to 25 years) Resistance to penetration by preservatives: Resistant Common Applications: Shingles, exterior cladding, greenhouses, beehives Property values marked by an asterisk (*) have been taken from an unusually old reference source.
Key Words:	Thuja plicata; Lumber, Timber
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Physical Properties	Original Value	Comments

Density	0.310 g/cc	Oven Dry Weight/Unseasoned Volume
	0.330 g/cc	Air Dry (12-15% Moisture Content)
	27.0 lb/ft³	Unseasoned*
Moisture Absorption at Equilibrium	1.5 - 8.0 %	Between 40% RH and 90% RH
Cell Length	7.00 mm	Mature Wood

Mechanical Properties	Original Value	Comments
Hardness, Wood Indentation	1200 N	Side. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	1600 N	Side
	1900 N	End. Force required to imbed a 0.444 inch steel ball to one-half its diameter
Tensile Strength, Ultimate	1.50 MPa	Perpendicular to Grain
Modulus of Rupture	0.0530 GPa	Static Bending
	5.20 ksi	Static Bending*
Flexural Yield Strength	3300 psi	Fiber Stress at Elastic Limit; Static Bending*
Flexural Modulus	7.73 GPa	Static Bending
	950 ksi	Static Bending*
Compressive Strength	4.20 MPa	Perpendicular to Grain
	43.0 MPa	Parallel to Grain
	310 psi	Perpendicular to Grain*
	2500 psi	Parallel to Grain*
	2840 psi	Max Crushing Strength Parallel to Grain*
Poissons Ratio	0.296	µ_LT, 12% Moisture Content
	0.378	µ_LR, 12% Moisture Content
	0.403	µ_TR, 12% Moisture Content
	0.484	µ_RT, 12% Moisture Content
Machinability	100 %	Good Relative to Other Wood
Shear Strength	5.90 MPa	Orientation Unknown
	720 psi	Parallel to Grain*
Impact	2.4	in-lb/in³; Work to Elastic Limit; Unseasoned Sample; Impact Bending*
	7100	psi; Fiber Stress at Elastic Limit; Unseasoned Sample; Impact Bending*
Work to Elastic Limit	0.640 in-lb/in³	Static Bending*
Work to Maximum Load	5.00 in-lb/in³	Static Bending*
Toughness	10.2 J	Radial
	14.7 J	Tangential

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.570 BTU-in/hr-ft²-°F	Oven Dry
	0.680 BTU-in/hr-ft²-°F	12% Moisture Content
Shrinkage	2.4 %	Radial; Green to Zero Moisture
	2.4 %	Tangential; Unseasoned to Oven Dry*
	4.4 %	Tangential; Green to Zero Moisture
	6.8 %	Volumetric; Green to Zero Moisture
	7.6 %	Radial; Unseasoned to Oven Dry*
	23 %	Volumetric; Unseasoned to Oven Dry*

Descriptive Properties
Color	Reddish brown	Usual for heartwood

References for this datasheet.

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PTSA550 / 71262

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