Oriented Strand Board

OSB (Oriented Strand Board) is a type of engineered wood panel, considered an upgraded form of particle board. It is manufactured from long wood strands (larger than those used in conventional particle board, typically 75–150 mm long, 10–25 mm wide, and 0.5–0.7 mm thick). These strands are oriented in specific directions, bonded with adhesives (commonly phenolic resin or MDI resin), and hot-pressed under high temperature and pressure to form a structural panel.

Key Features

• High Strength: The wood strands are oriented — the surface layers are aligned along the panel’s length, while the core layer is arranged crosswise. This gives OSB mechanical properties close to plywood and higher load-bearing capacity than conventional particle board.

• Good Stability: Resistant to cracking and warping, with strong screw-holding capacity.

• Large Panel Size: Common size is 1220 × 2440 mm, which allows whole-panel applications and reduces joints.

• Environmental Performance: Typically uses formaldehyde-free adhesives (MDI resin), with much lower formaldehyde emissions compared to particle board or MDF.

Applications

• Construction: Formwork, roofing, wall sheathing, subflooring.

• Furniture: Wardrobes, cabinets, countertop substrates.

• Packaging: Pallets, packing boxes.

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Key attributes

Item	Specification
Product Name	Plain Particle Board
Size	1220 × 2440 mm, 1830 × 2440 mm, or customized as per client’s requirement
Thickness	12 mm, 15 mm, 16 mm, 18 mm, 20 mm, 22 mm, 25 mm, 28 mm, 30 mm
Core Material	Poplar, Combination
Grade	First-Class
Moisture Content	10% – 15%
Formaldehyde Emission Standards	E0 / E1 / E2
Density	600 – 650 kg/m³
Face/Back Options	Plain, Melamine Faced, or Veneer Faced
Usage	Furniture, Door Panels, Interior Decoration, Pallets, etc.
Main Material	Poplar
Glue Options	MR, WBP, Melamine Glue, E1, E2
Packing	Loose Packing or Standard Export Pallet Packing
Payment Terms	T/T, L/C at sight
Supply Ability	20,000 m³ per month

Comparison with Other Panels

Property / Material	OSB (Oriented Strand Board)	Particleboard	Plywood	MDF (Medium Density Fiberboard)
Density (kg/m³)	600–700	650–750	500–650	700–850
Bending Strength (Modulus of Rupture, MPa)	20–25	11–15	30–60	18–25
Elastic Modulus (MOE, MPa)	3500–4500	2000–3000	6000–9000	2500–4000
Internal Bond Strength (MPa)	0.45–0.60	0.30–0.45	0.70–1.20	0.55–0.80
Moisture Resistance	Good (better than PB, worse than plywood)	Poor	Excellent	Poor–Moderate
Surface Quality	Rough, requires finishing	Fair	Good, natural veneer	Very smooth
Nail/Screw Holding	High	Medium	Very High	Medium
Formaldehyde Emission	Low (E0/E1, often MDI no added formaldehyde)	Medium	Low–Medium	Medium–High
Typical Sheet Size (mm)	1220×2440, 1250×2500	1220×2440	1220×2440	1220×2440
Common Uses	Structural panels, flooring, roof sheathing, packaging	Furniture carcasses, underlayment	Furniture, construction, formwork	Furniture, doors, decorative panels