North American Western Larch Wood

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North American Western Larch Wood
Categories:	Wood and Natural Products; Wood; Softwood
Material Notes:	Data is based on small, clear, air-dried samples unless specified. Property values marked by an asterisk (*) have been taken from an unusually old reference source.
Key Words:	Larix occidentalis; Lumber, Timber
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Physical Properties	Metric	English	Comments

Density	0.480 g/cc	0.0173 lb/in³	Oven Dry Weight/Unseasoned Volume
	0.769 g/cc	0.0278 lb/in³	Unseasoned*

Mechanical Properties	Metric	English	Comments
Hardness, Wood Indentation	2000 N	450 lb (f)	Side. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	2100 N	472 lb (f)	End. Force required to imbed a 0.444 inch steel ball to one-half its diameter
	3700 N	832 lb (f)	Side
Tensile Strength, Ultimate	1.59 MPa	230 psi	Perpendicular to Grain*
	3.00 MPa	435 psi	Perpendicular to Grain
	134 MPa	19400 psi	Axial
Modulus of Rupture	0.0517 GPa	7.50 ksi	Static Bending*
	0.0960 GPa	13.9 ksi	Static Bending
Flexural Yield Strength	31.7 MPa	4600 psi	Fiber Stress at Elastic Limit; Static Bending*
Flexural Modulus	9.31 GPa	1350 ksi	Static Bending*
	13.52 GPa	1961 ksi	Static Bending
Compressive Strength	3.86 MPa	560 psi	Perpendicular to Grain*
	6.80 MPa	986 psi	Perpendicular to Grain
	22.4 MPa	3250 psi	Parallel to Grain*
	26.2 MPa	3800 psi	Max Crushing Strength Parallel to Grain*
	56.0 MPa	8120 psi	Parallel to Grain
Poissons Ratio	0.276	0.276	µ_LT, 12% Moisture Content
	0.352	0.352	µ_TR, 12% Moisture Content
	0.355	0.355	µ_LR, 12% Moisture Content
	0.389	0.389	µ_RT, 12% Moisture Content
Shear Strength	6.34 MPa	920 psi	Parallel to Grain*
	9.70 MPa	1410 psi	Orientation Unknown
Impact	3.7	3.7	in-lb/in³; Work to Elastic Limit; Unseasoned Sample; Impact Bending*
	9400	9400	psi; Fiber Stress at Elastic Limit; Unseasoned Sample; Impact Bending*
Work to Elastic Limit	0.00696 J/cm³	1.01 in-lb/in³	Static Bending*
Work to Maximum Load	0.0490 J/cm³	7.10 in-lb/in³	Static Bending*
Toughness	23.8 J	17.6 ft-lb	Radial
	38.5 J	28.4 ft-lb	Tangential

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.127 W/m-K	0.880 BTU-in/hr-ft²-°F	Oven Dry
	0.159 W/m-K	1.10 BTU-in/hr-ft²-°F	12% Moisture Content
Shrinkage	4.2 %	4.2 %	Radial; Green to Zero Moisture
	8.1 %	8.1 %	Tangential; Green to Zero Moisture
	13.2 %	13.2 %	Volumetric; Green to Zero Moisture

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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