Red Alder (Alnus rubra)

Description: Red alder, a relative of birch, is almost white when freshly cut but quickly changes on exposure to air, becoming light brown with a yellow or reddish tinge. Heartwood is formed only in trees of advanced age and there is no visible boundary between sap and heartwood. The wood is fairly straight-grained with a uniform texture.

Main Uses: Furniture, kitchen cabinets, doors, shutters, mouldings, panel stock, turnings, carvings and kitchen utensils.

Physical Properties: Red alder is a relatively soft hardwood of medium density that has low bending strength, shock resistance and stiffness.

Availability: Available in dimension stock and lumber.

Working Properties: Red alder machines well and is excellent for turning. It nails, screws and glues well, and can be sanded, painted or stained to a good finish. When stained, it blends with walnut, mahogany or cherry. It dries easily with little degrade and has good dimensional stability after drying.

MachiningNailing ScrewingGluingFinishing
ExcellentGood Good Good Excellent

 

   

Strength and Mechanical Properties: (inch-pound)

Moisture ContentGreen-12%
Specific Gravity0.37-0.41
Static Bending: Modulus of Rupture (lbf/in^2)6,500-9,800
Static Bending: Modulus of Elasticity (10^6 lbf/in^2)1.17-1.38
Static Bending: Work to Maximum Load (in-lbf/in^3)8.0-8.4
Impact Bending to Grain (in)22-20
Compression Parallel to Grain (lbf/in^2)2,960-5,820
Compression Perpendicular to Grain (lbf/in^2)250-440
Shear Parallel to Grain (lbf/in^2)770-1,080
Tension Perpendicular to Grain (lbf/in^2)390-420
Side Hardness (lbf)440-590

Source: American Hardwood Information Center, Species Guide