Scientific name

Pinus taeda L. ; P. elliotis Engelm; P. echinata Mill; P. palustris Mill.

Other names

English: Southern yellow pine; Melis pine; P. movila; Tea pine

Geographic origin

Southeastern United States

Description

&;8226; Sapwood: Yellowish white colour
&;8226; Heartwood: reddish brown
&;8226; Fiber: Right
&;8226; Grain: medium size
&;8226; Characteristic defects: Knots, resin bags, resin impregnation and young style wood

Capacity of being impregnated

&;8226; Sapwood: Medium to low capacity of being impregnated
&;8226; Heartwood: No capable of being impregnated

Mechanization

&;8226; Sawing process: Easy, except in those cases of excess resin
&;8226; Drying process: Easy and Fast. Low risk of deformations and crack formation. Resin exudations
&;8226; Planing process: Easy. Risk of weakening due to the presence of resin
&;8226; Gluing process: Difficulties can arise due to the presence of resin
&;8226; Nailing and screwing process: Pre-drilling is required.
&;8226; Finish: Difficulties can arise due to the presence of resin. A blending agent should be applied in order to homogenize wood.

Physical properties

&;8226; Apparent density at 12% humidity
450 kg/m3 semi-light wood
&;8226; Dimensional stability
- Volumetric contraction coefficient 0.41 % stable wood
- Relation between contractions 1.6% no tendency to deformity
&;8226; Hardness (Chaláis-Meudon) 2.4 Semi-softwood

Mechanical properties

&;8226; Resistance to static flexion 975 kg/cm2 &;8226; Elasticity module 130,000 kg/cm2
&;8226; Resistance to compression 492 kg/cm2

Observations

It can present large areas of resin, resin impregnations.