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	Metric	English	Comments

Density	0.310 g/cc	0.0112 lb/in³	Oven Dry Weight/Unseasoned Volume
	0.330 g/cc	0.0119 lb/in³	Air Dry (12-15% Moisture Content)
	0.433 g/cc	0.0156 lb/in³	Unseasoned*
Moisture Absorption at Equilibrium	1.5 - 8.0 %	1.5 - 8.0 %	Between 40% RH and 90% RH
Cell Length	7.00 mm	0.276 in	Mature Wood

Mechanical Properties	Metric	English	Comments
Hardness, Wood Indentation	1200 N	270 lb (f)	Side. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	1600 N	360 lb (f)	Side
	1900 N	427 lb (f)	End. Force required to imbed a 0.444 inch steel ball to one-half its diameter
Tensile Strength, Ultimate	1.50 MPa	218 psi	Perpendicular to Grain
Modulus of Rupture	0.0359 GPa	5.20 ksi	Static Bending*
	0.0530 GPa	7.69 ksi	Static Bending
Flexural Yield Strength	22.8 MPa	3300 psi	Fiber Stress at Elastic Limit; Static Bending*
Flexural Modulus	6.55 GPa	950 ksi	Static Bending*
	7.73 GPa	1120 ksi	Static Bending
Compressive Strength	2.14 MPa	310 psi	Perpendicular to Grain*
	4.20 MPa	609 psi	Perpendicular to Grain
	17.2 MPa	2500 psi	Parallel to Grain*
	19.6 MPa	2840 psi	Max Crushing Strength Parallel to Grain*
	43.0 MPa	6240 psi	Parallel to Grain
Poissons Ratio	0.296	0.296	µ_LT, 12% Moisture Content
	0.378	0.378	µ_LR, 12% Moisture Content
	0.403	0.403	µ_TR, 12% Moisture Content
	0.484	0.484	µ_RT, 12% Moisture Content
Machinability	100 %	100 %	Good Relative to Other Wood
Shear Strength	4.96 MPa	720 psi	Parallel to Grain*
	5.90 MPa	856 psi	Orientation Unknown
Impact	2.4	2.4	in-lb/in³; Work to Elastic Limit; Unseasoned Sample; Impact Bending*
	7100	7100	psi; Fiber Stress at Elastic Limit; Unseasoned Sample; Impact Bending*
Work to Elastic Limit	0.00441 J/cm³	0.640 in-lb/in³	Static Bending*
Work to Maximum Load	0.0345 J/cm³	5.00 in-lb/in³	Static Bending*
Toughness	10.2 J	7.52 ft-lb	Radial
	14.7 J	10.8 ft-lb	Tangential

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.0821 W/m-K	0.570 BTU-in/hr-ft²-°F	Oven Dry
	0.0980 W/m-K	0.680 BTU-in/hr-ft²-°F	12% Moisture Content
Shrinkage	2.4 %	2.4 %	Radial; Green to Zero Moisture
	2.4 %	2.4 %	Tangential; Unseasoned to Oven Dry*
	4.4 %	4.4 %	Tangential; Green to Zero Moisture
	6.8 %	6.8 %	Volumetric; Green to Zero Moisture
	7.6 %	7.6 %	Radial; Unseasoned to Oven Dry*
	23 %	23 %	Volumetric; Unseasoned to Oven Dry*

Descriptive Properties
Color	Reddish brown		Usual for heartwood

References for this datasheet.

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