This standard specifies the requirements for coir hardboards intended for general purposes such as furniture, panelling, and partitions. It covers materials, dimensions, physical and mechanical properties like density and strength, and the test methods to verify conformity.
Coir Hardboard for General Purposes -Specification
Quick Reference Values
Minimum Density800 kg/m³
Minimum Modulus of Rupture (Standard Hardboard, 3-6mm thick)20 MPa
Maximum Water Absorption (24h Immersion)35 %
Maximum Thickness Swelling (24h Immersion)25 %
Standard Thicknesses3, 4, 5, 6, 8, 10, and 12 mm
Key Formulas
Modulus of Rupture (MOR) = (3 * P * l) / (2 * b * t^2) — Where P is max load, l is span, b is width, t is thickness.
Practical Notes
Coir hardboard is an eco-friendly alternative to wood-based boards, utilizing coconut husk fibre.
Ensure the binder used is suitable for the intended interior application, particularly regarding formaldehyde emissions.
These boards are for general, non-structural purposes and should not be used in load-bearing applications or prolonged direct water exposure.