Maple, American Hard

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		Maple, American Hard Botanical Name: Acer Saccharum Common Name(s): Hard or Rock Maple Origin: North America
OverviewBasic InfoTechnical General: Seasoning: Dries well with little degrade. Working: Rather difficult to work. Reduction of cutting angle to 20º assists the finishing operation. It can be stained, polished and glued satisfactorily but it is hard to nail or screw. Uses: Flooring, high-class joinery, boat interiors, musical instruments and sporting goods. Availability Grade: Superior Stocked: Yes Price: Availability: Available ex-stock in Random Widths in 25, 40 and 50mm thicknesses. Supply - Resource Certification Primary Supplier(s): Cole Hardwoods, Baillie Lumber Durability - Durability Durability (In Ground) Perishable/Non Durable Durability (Above Ground): Perishable/Non Durable Density Density Air Dried 655 kg/m² Shrinkage Shrinkage Radial 3 % (Green to 12% MC) Shrinkage Tangental: 5 % (Green to 12% MC) Stability Stability Kiln Dried Stable Stability Green: Prone to shrinkage and distortion Mechanical Properties Mechanical Links Janka Hardness: (Average) 6.4 kN Modulus of Rupture / Bending Strength: 109 MPa (N/mm² or MN/m²) Modulus of Elasticity / Stiffness: 13 GPa (GN/m²) Maximum Crushing Strength: 54 MPa (N/mm² or MN/m²) Strength Group Unseasoned: S4 Strength Group Seasoned: SD4 Moisture Meter Reading Corrections Moisture Meter Reading Corrections: Fire Indicies Ignitability Index: (NZ/AS 1530.3) Flame Spread Index: (NZ/AS 1530.3) Heat Evolved Index: (NZ/AS 1530.3) Smoke Developed Index: (NZ/AS 1530.3) Flame Spread Index: (ASTM E84) 104

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