Results for the load-bearing grade against IS 19267 : 2025. The left figure is what the standard asks for. The right is what the board returned.
Property
Prescribed
Obtained
Modulus of rupture, major axis 10–18 mm
16.00
25.00N/mm²
Modulus of rupture, minor axis 10–18 mm
8.00
16.00N/mm²
Modulus of elasticity, major axis 10–18 mm
2250
4000N/mm²
Modulus of elasticity, minor axis 10–18 mm
1100
2000N/mm²
Internal bond strength, minimum individual
0.25
0.35N/mm²
Screw withdrawal, face 10–18 mm
2200
4400N
Screw withdrawal, edge 10–18 mm
2200
4000N
Thickness swelling, 24 hours maximum
22 %
10%
Moisture content range
5 – 15 %
5 – 7%
Thickness tolerance maximumSource specification requires confirmation
± 0.8 mm
± 1.0mm
Density 10–18 mm
—
720 – 730kg/m³
Figures for the 10–18 mm band as published in the OSB Hybrid Ply catalogue. Values for 18–30 mm are given there in full. The thickness tolerance row is reproduced exactly as printed in the catalogue, where the obtained figure is wider than the prescribed one; every other row is tighter. It is carried here unaltered pending confirmation.