You can find easily that a fixed sized plywood sheet weight depends on the density mainly.
Plywood Density
Plywood density usually ranges from 340KGS to 700 KGS. There are a few elements that can determine the density of the board.
Core Veneer Types
Glue Type & Glue Amount
Compression Ratio
Moisture Content
Core Veneer Types
Poplar plywood with urea-formaldehyde glue weighs 520 kgs per cubic meter. It has the same density as pine plywood.
Finger joint core plywood weigh 550 kgs per cubic meter. It is mixed with poplar and hardwood board with a high moisture content.
Eucalyptus plywood weigh 570-600 kgs per cubic meter.
Birch Plywood weigh 650-700 kgs per cubic meter.
Glue Type & Amount
Glue types is important. WBP Phenolic glue is heavier than normal urea glue. For example, poplar plywood with urea glue density is 520 kgs/m3. Poplar plywood with phenolic glue density is 530 kgs/m3.
Some manufacturers spread more glue on the veneers to increase strength. This practice will also increase the weight of plywood sheets.
Compression Ratio
Compression ration = veneer thickness / plywood thickness.
Structural plywood requires a very higher compression ratio compared with non-structural plywood.
Non-structural eucalyptus plywood density is 580 kgs/m3. Structural eucalyptus plywood density can be as high as 600 kgs/m3.
Moisture Content
Moisture rate in the board can affect the weight by 5-10 kgs/m3. Know more about moisture content at veneer drying.
Plywood Volume
Plywood Size Volume Per Sheet Sheets per M3 1220x2440x18mm 0.0536 m3 18.70 1220x2440x15mm 0.0447 m3 22.40 1220x2440x12mm 0.0357 m3 28 1220x2440x9mm 0.0268 m3 37.33 1220x2440x6mm 0.0179 m3 56 1220x2440x4mm 0.0119 m3 84
Quick Reference Table
Common Plywood Weight
Plywood Size Core Veneer Species Weight per Sheet 1220x2440x18mm Poplar 28 kgs 1220x2440x18mm Pine 28 kgs 1220x2440x18mm Birch 37 kgs 1220x2440x18mm Finger Joint 29 kgs
