Plywood for aircraft is produced by using glues of the thermosetting, synthetic resin type. The quality requirements for plywood to be used in aircraft are much more exacting than for industrial plywood in general. Aircraft plywood meets MIL-P-6070B. The mill specification requires that the plywood be tested for general condition of boards, deviations of thickness, moisture content, tensile strength of wood, gluing strength, bending test, torsion test, immersion test and boiling test. Plywood is factory certified. MIL-P-6070B is laminated in hot press with waterproof glue. 90° grain runs with 8′ direction. 45° grain runs diagonal (use for spar facing). Approximate weight is based on 4′ X 8′ sheets.
Birch and Poplar Plywood Aircraft Grade MIL-P-6070
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Description
Birch and poplar plywood meeting MIL-P-6070 standards refers to a specific type of plywood manufactured to meet the requirements outlined in Military Specification MIL-P-6070. This plywood is commonly used in aircraft construction and other aerospace applications.
Here’s a breakdown of each component:
- Birch and Poplar: These are the wood species used in the plywood’s construction. Birch plywood is made from birch wood (Betula spp.), while poplar plywood is made from poplar wood (Populus spp.). Both birch and poplar are chosen for their strength, lightweight properties, and suitability for aircraft applications.
- Aircraft Grade: This designation indicates that the plywood meets the rigorous standards required for use in aircraft construction. Aircraft-grade plywood must meet strict criteria for strength, durability, weight, and other properties to ensure the safety and performance of aircraft.
- MIL-P-6070: This military specification outlines the requirements for plywood used in aircraft construction. It covers various aspects of plywood manufacturing, including materials, construction methods, dimensions, quality control, and testing procedures.
Plywood meeting MIL-P-6070 standards, made from birch and poplar, is commonly utilized in the aerospace industry for various applications such as aircraft interiors, cabinetry, bulkheads, and structural components. It undergoes thorough testing to ensure it meets the necessary performance criteria and can withstand the demanding conditions encountered in aircraft operations.
Overall, birch and poplar plywood meeting MIL-P-6070 standards offer a combination of strength, lightweight properties, and durability, making them suitable for use in aircraft and other aerospace applications where high performance and reliability are essential.
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Q & A
Can you please tell me the weight / sq ft of 3/16X2X2B90-5 90 Birch/Poplar 5 PLY 3/16 plywood? Thanks very much in advance.
3.25 lbs for a 2 x 2
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2 reviews for Birch and Poplar Plywood Aircraft Grade MIL-P-6070