Southern yellow pine

Scientific name:
Pinus taeda L. ; P. elliotis Engelm; P. echinata Mill; P. palustris Mill.
Geographic origin:
Southeastern United States.
  • Sapwood: yellowish white colour.
  • Heartwood: reddish brown.
  • Fiber: straight.
  • Grain: medium size.
  • Characteristic defects: knots, resin bags, resin impregnations and young style wood.
Pino Taeda
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Capacity of being impregnated
  • Sapwood: medium to low capacity of being impregnated.
  • Heartwood: no capable of being impregnated.
Mechanical properties
Resistance to static flexion 975 kg/cm2.
Elasticity module 130,000 kg/cm2.
Resistance to compression 492 kg/cm2.
Mechanization
  • Sawing process: easy, except in those cases of resin's excess.
  • Drying process: easy and fast. Low risk of deformations and crack formation. Resin exudations.
  • Planing process: easy. Risk of weakening due to the presence of resin.
  • Gluing process: difficulties can arise due to the presence of resin.
  • Nailing and screwing process: Pre-drilling is required.
  • Finish: difficulties can arise due to the presence of resin. A blending agent should be applied in order to homogenize wood.
Physical properties
  • Apparent density at 12% humidity 450 kg/m3 semi-light wood.
  • Dimensional stability
  • - Volumetric contraction coefficient 0.41 % stable wood.
  • - Relation between contractions 1.6% no tendency to deformity.
  • Hardness (Chaláis-Meudon) 2.4 semi-softwood.
Observations
Pot presentar àmplies zones de resina, enteiament