Jack Pine Wood: Properties and Uses

Jack Pine tree

Jack Pine Wood Properties and Uses

  • Other Names: Scrub pine, Grey pine, Black pine
  • Scientific Name: Pinus banksiana lamb.
  • Genera: Pinaceae
  • Places where this tree is found: These trees are grown naturally in countries where lakes are significant in number. Moreover, these trees are grown discreetly in a very small number in England and New York.

Physical properties of Jackpine Wood

  • Color of the wood: The sapwood is mostly white, and the heartwood is light brown to orange. The sapwood can be present in about half or more of the total portion of the total volume.
  • Structure of wood: Generally, Red pine and White pine are grown alongside. The Jackpine cannot be separated from the Red and White pine, so they are used altogether. The texture of the wood is comparatively of more girth. The wood is quite resinous. The wood is generally knotty. 
  • Shrinkage: The wood is moderately less shrinkable. To reach the humidity from the raw condition, 3.7% radial, 6.6 % tangential, and 10.3% volumetric shrinkage occur.
  • Workability: To work with this wood is generally easy and convenient. But as the wood is knotty and resinous and has a thick texture, to work using this is a little tiresome.
  • The weight, density, and specific gravity of the wood: The wood is moderately light in weight. In correspondence to the raw state and the zero humidity state, based on the weight, the specific gravity of the wood is 0.40 (density 410 kg per cubic meter). In the state of 12% humidity based on the volume and zero humidity, based on the weight, the specific gravity is 0.43(density 440 kg per cubic meter).
  • Moisture at green (raw) condition: The information is not available, but it can be similar to the Red pine or the White pine in this case.
  • Natural durability: The sapwood and the heartwood are both classed in the less sustainable class.
  • Seasoning properties: The drying process in the kiln is easy and quick.
  • Treatability: The sapwood is preservable, but the heartwood is not preservable.
jack Pine wood

Mechanical properties of Jackpine wood

The jackpine wood is moderately less strong, moderately less tolerable to stress, and moderately less tolerable to external hits. The wood is of low stiffness.

  • Modulus of rupture: in the raw state, the modulus of rupture is 41.38 Newton per square millimeter (6000 lb per square inch). In 12% humidity, the wood displays a modulus of 68.28 Newton per square millimeter (9900 lb per square inch).
  • Modulus of elasticity: In the raw state, the modulus of elasticity is 0.0073 million Newton per square millimeter (1.07 million lb per square inch); in 12% humidity the wood displays 0.0093 million Newton per square millimeter (1.35 million lb per inch). 
  • Work to maximum load: In the raw state, this parameter is 0.199kg per cubic centimeter (7.2 lb per cubic inch), and in the 12 % humidity state, this parameter becomes 0.23 kg per cubic centimeter (8.3 lb per cubic inch).
  • Impact bending: In the raw state, the wood displays 66.04 cm (26 inches). In the 12% humidity state, this parameter becomes 68.58 centimeters (27 inches).
  • Compression to grain –maximum crushing strength: This parameter is 20.34 Newton per square millimeter (2.950 lb per square inch) in the raw state. In the 12% humidity state, the parameter becomes 39.03 Newton per square millimeter (5660 lb per square inch).
  • Compression perpendicular to gain – fiber stress at the proportional limit: In green condition, this parameter is 2.07 Newton per square millimeter (300 lb per square inch); in the 12% humidity state, this parameter becomes 4.00 Newton per square millimeter (580 lb per square inch).
  • Shear parallel to grain- maximum swarming strength: The wood displays 5.17 Newton per square millimeter (750 lb per inch) in the raw state. In the 12% humidity state, the parameter becomes 8.09 Newton per square millimeter (1.170 lb per square inch).
  • Tension perpendicular to grain – maximum tensile strength: In green condition, the parameter is 2.46 Newton per square millimeter (360 lb per square inch); in the state of 12% humidity, the parameter becomes 2.90 Newton per square millimeter (420 lb per square inch).
  • Side hardness- load perpendicular to grain: In green condition, the parameter is 181.44 kg (400 lb); in the state of 12% humidity, the parameter becomes 258.55 kg (570 lb).

Uses of Jackpine Wood

This wood is used in preparation of the mold of paper, as wood for the box, in making the floor, and as fuel. In the case of less important fields of work, this wood is used as the slipper of the railway line, in the mine, electricity pole, and telephony, and to make slack cooperage. The main use of this wood in making the mold of paper.

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