Tropical Iroko Wood

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Tropical Iroko Wood
Categories:	Wood and Natural Products; Wood; Hardwood
Material Notes:	Occasional deposits of stone may occur. Data is based on small, clear, air-dried samples unless specified. Usual surface texture: Medium Dimensional changes when dried lumber is subjected to variations in humidity during service: Small Resistance to fungal decay (Heartwood in ground contact): Very Durable (Over 25 years) Resistance to penetration by preservatives: Extremely resistant Common Applications: Exterior and interior joinery, bench tops, constructional work
Key Words:	Chlorophora excelsa; Lumber, Timber
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Physical Properties	Metric	English	Comments

Specific Gravity	0.540 g/cc	0.540 g/cc	Green, African Origin
Density	0.620 g/cc	0.0224 lb/in³	Air Dry (12-15% Moisture Content)

Mechanical Properties	Metric	English	Comments
Hardness, Wood Indentation	3200 N	719 lb (f)	Side
	4800 N	1080 lb (f)	Side Hardness, Green, African Origin
	5600 N	1260 lb (f)	Side Hardness, 12% Moisture, African Origin
Tensile Strength, Ultimate	2.50 MPa	363 psi	Perpendicular to Grain
	78.0 MPa	11300 psi	Axial
Modulus of Rupture	0.0703 GPa	10.2 ksi	Static Bending, Green, African Origin
	0.0885 GPa	12.8 ksi	Static Bending, 12% Moisture, African Origin
	0.111 GPa	16.1 ksi	Static Bending
Flexural Modulus	8.90 GPa	1290 ksi	Static Bending, Green, African Origin
	10.1 GPa	1460 ksi	Static Bending, 12% Moisture, African Origin
	11.27 GPa	1635 ksi	Static Bending
Compressive Strength	33.9 MPa	4920 psi	Parallel to Grain, Green, African Origin
	52.3 MPa	7590 psi	Parallel to Grain, 12% Moisture, African Origin
	68.0 MPa	9860 psi
Machinability	25 %	25 %	Medium/difficult Relative to Other Wood
Shear Strength	9.00 MPa	1310 psi	Parallel to Grain, Green, African Origin
	10.8 MPa	1570 psi	Orientation Unknown
	12.4 MPa	1800 psi	Parallel to Grain, 12% Moisture, African Origin
Work to Maximum Load	0.0620 J/cm³	8.99 in-lb/in³	Static Bending, 12% Moisture, African Origin
	0.0720 J/cm³	10.4 in-lb/in³	Static Bending, Green, African Origin
Toughness	10.0 J	7.38 ft-lb	2 cm x 2 cm sample

Thermal Properties	Metric	English	Comments
Shrinkage	0.10 %	0.10 %	Axial; Green to Zero Moisture
	2.8 %	2.8 %	Radial Shrinkage Green to Oven Dry, African Origin
	3.8 %	3.8 %	Tangential Shrinkage Green to Oven Dry, African Origin
	3.8 %	3.8 %	Radial; Green to Zero Moisture
	5.5 %	5.5 %	Tangential; Green to Zero Moisture
	8.8 %	8.8 %	Volumetric Shrinkage Green to Oven Dry, African Origin
	9.4 %	9.4 %	Volumetric; Green to Zero Moisture

Descriptive Properties
Color	Yellow-brown		Usual for heartwood

References for this datasheet.

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PTST100 / 71392

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