A high-density composite material made by impregnating wood veneers with synthetic resin (like phenol formaldehyde) and compressing them under heat and high pressure.

Can IS 3513 Part 3 compregs be used for electrical insulation?

No, IS 3513 Part 1 specifically covers compregs intended for electrical purposes and testing for dielectric strength.

What resins are typically used in manufacturing compregs?

Synthetic resins such as phenol formaldehyde (BWP grade) conforming to IS 848 are generally used.

IS 3513

: 2000

Resin Treated Compressed Wood Laminates (Compregs) - Specification, Part 3: For General Purposes

CurrentSpecializedSpecificationMaterials Science · Wood and Other Lignocellulosic Products

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This standard lays down the specification and requirements for resin treated compressed wood laminates (compregs) used for general engineering and architectural purposes. It defines parameters like materials, manufacturing methods, dimensions, and critical physical and mechanical properties.

Resin Treated Compressed Wood Laminates (Compregs) - Specification, Part 3: For General Purposes

Quick Reference Values

Specific Gravity (Minimum)1.10

Moisture Content (Maximum)8%

Tensile Strength, Along the Grain (Minimum)100 N/mm²

Compressive Strength, Perpendicular to Laminae (Minimum)120 N/mm²

Water Absorption (24 hrs)Depends on thickness, typically up to 5%

Practical Notes

Compregs are highly dense and heavy due to resin impregnation and high-pressure compression; standard woodworking tools may wear out faster.

Do not confuse Part 3 (General Purposes) with Part 1 (Electrical) or Part 2 (Chemical), which have specialized resin formulations and testing requirements.

Storage should be in a dry, well-ventilated area to prevent surface moisture absorption before machining or finishing.