Fire Retardant Particle Board (Class B-s1,d0 / ASTM E84 Class A) · Factory Direct Wholesale

Q: Does the fire-retardant mineral additive reduce mechanical screw-holding or bending strength?

No. Our formulation incorporates micro-fine non-halogenated mineral compounds balanced with high-tensile bonding resin, maintaining an internal bond strength ≥ 0.40 N/mm² and perpendicular face screw retention ≥ 1050 N (EN 320), fully compatible with standard hardware, 32mm system dowels, and CNC machining.

Q: Why is the core of fire-retardant particle board dyed crimson red?

The crimson red dye is an internationally recognized visual indicator that allows building code inspectors, fire marshals, and project architects to instantly identify and certify fire-retardant structural wood panels post-machining and inside assembled wall partitions without destructive testing.

Q: Can fire-retardant particle board be supplied with decorative melamine surfaces?

Yes. We offer both raw sanded FR particle board substrates and pre-laminated Class B FR Melamine Faced Chipboard (FR MFC) with flame-retardant overlay sheets for hotel guestroom corridors, hospital cabinetry, and acoustic wall paneling. Include the chosen decor and texture and request documentation for the proposed finished panel configuration with your quotation.

Q: What chemical mechanism allows Cuzi FR particle board to achieve Class B-s1,d0?

Under flame exposure (>200°C), non-halogenated inorganic mineral salts dispersed within the board undergo an endothermic chemical decomposition, releasing chemically bound water vapor that cools the flame front and dilutes combustible pyrolysis gases. Concurrently, an intumescent carbon char shield forms on the surface, starving the core of oxygen.

Product Overview & Ordering Options

Fire Retardant (FR) Particle Board is an architectural engineered wood panel manufactured with non-combustible mineral salts integrated uniformly into the core matrix. Certified under EN 13501-1 Class B-s1, d0 and ASTM E84 Class A (FSI < 25), it releases zero flaming droplets (d0) and minimal smoke (s1) under flame exposure. Identified by its uniform crimson-red core, it is mandated for hotels, hospitals, airports, and public wall cladding.

EU Fire Classification: EN 13501-1 Class B-s1, d0 (Euroclass B)

US Fire Classification: ASTM E84 Class A / NFPA 101 (FSI < 25, SDI < 450)

Core Indicator: Uniform Crimson-Red Identifier Dye

Flaming Droplets: d0 (Zero Burning Droplets or Particles)

Smoke Production: s1 (Lowest Possible Smoke Density Index)

Standard Thicknesses: 12 mm, 15 mm, 18 mm, 25 mm (Raw or FR Melamine Faced)

Red-core particle board panels showing the surface and cut edge

Stacked Class B Fire Retardant Panels with Crimson-Red Core Panel surfaces & core details

Endothermic Mineral Matrix Science

Standard wood burns rapidly once surface temperatures exceed 275°C. Cuzi FR Particle Board incorporates micro-fine non-halogenated inorganic mineral salts evenly dispersed within the wood fiber slurry. When exposed to flame:

Endothermic Water Vapor Release: Cooling Flame Front > 200°C

Intumescent Carbon Char Shield: Starves Core of Oxygen

Burning Droplets Rating: d0 (Zero Burning Droplets)

Smoke Emission Class: s1 (Lowest Optical Density)

Request FR Sample Box & Test Dossier → View data sheet →

Panel Structure, Processing & Applications

Explore panel surfaces, core structures, processing and applications.

1. Red-Core Panels

Request the fire classification and supporting reports required for your project.

Particle board cross-section with fine surface layers and a coarse chip core

2. Particle Board Core

Fine surface particles surround a coarser wood-chip core.

Office workstations with woodgrain desktops and grey storage pedestals

3. Office Furniture

Woodgrain panels can be specified for desktops, storage units and office fitouts.

Raw particle board sheets stacked and strapped on pallets

4. Pallet Packing

Specify sheet sizes, quantities and packing requirements with your order.

European & US Standards Testing Matrix

Comprehensive Technical Data Sheet (Class B-s1,d0 Specifications)

Certified performance testing verified by SGS, Intertek, and Warringtonfire for commercial public fit-outs.

Physical & Fire Reaction Property	Testing Standard	Units	12 mm	15 mm	18 mm (High-Volume)	25 mm
Euroclass Reaction to Fire	EN 13501-1 (Single Burning Item)	Rating	Class B-s1, d0	Class B-s1, d0	Class B-s1, d0	Class B-s1, d0
US Flame Spread Index (FSI)	ASTM E84 (Steiner Tunnel)	Index	< 25 (Class A)	< 25 (Class A)	15 – 20 (Class A)	< 25 (Class A)
US Smoke Developed Index (SDI)	ASTM E84 / NFPA 101	Index	< 450 (Class A)	< 450 (Class A)	120 – 180 (Class A)	< 450 (Class A)
Nominal Density	EN 323 / ASTM D1037	kg/m³	730 – 760	720 – 750	710 – 740	700 – 730
Bending Strength (MOR)	EN 310	N/mm²	≥ 13.0 (Cuzi: 14.2)	≥ 11.5 (Cuzi: 13.2)	≥ 11.0 (Cuzi: 13.0)	≥ 10.0 (Cuzi: 12.0)
Modulus of Elasticity (MOE)	EN 310	N/mm²	≥ 1800 (Cuzi: 2050)	≥ 1600 (Cuzi: 1850)	≥ 1600 (Cuzi: 1800)	≥ 1500 (Cuzi: 1700)
Internal Bond Strength (IB)	EN 319	N/mm²	≥ 0.35 (Cuzi: 0.44)	≥ 0.35 (Cuzi: 0.42)	≥ 0.35 (Cuzi: 0.42)	≥ 0.30 (Cuzi: 0.38)
24-Hour Thickness Swelling	EN 317	%	≤ 16.0% (Cuzi: 13.8%)	≤ 15.0% (Cuzi: 13.0%)	≤ 15.0% (Cuzi: 12.8%)	≤ 14.0% (Cuzi: 12.2%)
Face Screw Holding Resistance	EN 320 / ASTM D1037	N	≥ 950 N (Cuzi: 1080 N)	≥ 1000 N (Cuzi: 1150 N)	≥ 1000 N (Cuzi: 1150 N)	≥ 1000 N (Cuzi: 1180 N)
Formaldehyde Emission	ASTM E1333 / EN 717-1	ppm	< 0.05 (CARB P2)	< 0.05 (CARB P2)	< 0.05 (CARB P2)	< 0.05 (CARB P2)

1. Mandatory High-Occupancy Public Sectors

Where building codes strictly mandate Class B / Class A fire-rated structural timber panels:

Hotels & Hospitality: Guestroom corridor wall paneling, headboard feature walls, fire-exit lobbies.
Healthcare & Hospitals: Nurse station cabinetry, laboratory storage, public waiting area wall paneling.
Airports & Transit Terminals: Departure gate check-in counters, retail kiosk bulkheads, acoustic wall baffles.
Educational Auditoriums: University lecture halls, theater acoustic paneling, school library shelving.

2. Class B Melamine Surfacing & PCD Tooling

Fabrication and decorative surfacing specifications for joinery manufacturers:

FR Melamine Faced Chipboard (FR MFC): Pressed with flame-retardant barrier underlays in matching woodgrain and matte decors without compromising Class B ratings.
PCD Diamond Saw Blades Required: Inorganic mineral fire-retardant salts are abrasive; Polycrystalline Diamond (PCD) Triple Chip Grind (TCG) blades ensure clean, chip-free cuts.
Dedicated Dust Extraction: High-velocity air extraction (>28 m/s) is recommended at automated CNC stations to capture fine mineral dust.

Global Ocean Freight & FCL Capacity

Fire Retardant Particle Board Container Loading Data

Pallet packing calculations taking into account higher mineral core density (~730 kg/m³).

Thickness	Standard Format	Sheets / Pallet	20'GP Container (8 Pallets)	40'HQ Container (16 Pallets)	Net Timber Volume (40'HQ)	Gross Weight (40'HQ)
12 mm	1220 × 2440 mm (4×8 ft)	75 Sheets	8 Pallets (600 Sheets)	16 Pallets (1,200 Sheets)	42.86 m³	~26.6 Metric Tons
15 mm	1220 × 2440 mm (4×8 ft)	60 Sheets	8 Pallets (480 Sheets)	16 Pallets (960 Sheets)	42.86 m³	~26.7 Metric Tons
18 mm (High-Volume Core)	1220 × 2440 mm (4×8 ft)	50 Sheets	8 Pallets (400 Sheets)	16 Pallets (800 Sheets)	42.86 m³	~26.8 Metric Tons
25 mm	1220 × 2440 mm (4×8 ft)	35 Sheets	8 Pallets (280 Sheets)	16 Pallets (560 Sheets)	41.67 m³	~26.5 Metric Tons
18 mm Jumbo	1830 × 2745 mm (6×9 ft)	35 Sheets	—	12 Pallets (420 Sheets)	37.97 m³	~26.4 Metric Tons

Commercial & Engineering Q&A

Frequently Asked Questions (B2B Buyer FAQ)

Authoritative direct answers on container minimums, standards compliance, and fabrication tolerances.

What official fire reaction ratings do Cuzi fire-retardant particle boards hold? +

Our boards are certified to European Standard EN 13501-1 Class B-s1, d0 (Euroclass B fire reaction, lowest smoke generation s1, zero flaming droplets d0) and US Standard ASTM E84 Class A / UL 723 (Flame Spread Index < 25, Smoke Developed Index < 450) tested and verified by SGS and Warringtonfire. When requesting test documentation, identify the required classification, panel thickness, facing and end use so the report scope can be checked against your proposed specification.

Does the fire-retardant mineral additive reduce mechanical screw-holding or bending strength? +

No. Our formulation incorporates micro-fine non-halogenated mineral compounds balanced with high-tensile bonding resin, maintaining an internal bond strength ≥ 0.40 N/mm² and perpendicular face screw retention ≥ 1050 N (EN 320), fully compatible with standard hardware, 32mm system dowels, and CNC machining.

Why is the core of fire-retardant particle board dyed crimson red? +

The crimson red dye is an internationally recognized visual indicator that allows building code inspectors, fire marshals, and project architects to instantly identify and certify fire-retardant structural wood panels post-machining and inside assembled wall partitions without destructive testing.

Can fire-retardant particle board be supplied with decorative melamine surfaces? +

Yes. We offer both raw sanded FR particle board substrates and pre-laminated Class B FR Melamine Faced Chipboard (FR MFC) with flame-retardant overlay sheets for hotel guestroom corridors, hospital cabinetry, and acoustic wall paneling. Include the chosen decor and texture and request documentation for the proposed finished panel configuration with your quotation.

What chemical mechanism allows Cuzi FR particle board to achieve Class B-s1,d0? +

Under flame exposure (>200°C), non-halogenated inorganic mineral salts dispersed within the board undergo an endothermic chemical decomposition, releasing chemically bound water vapor that cools the flame front and dilutes combustible pyrolysis gases. Concurrently, an intumescent carbon char shield forms on the surface, starving the core of oxygen.

What public commercial building applications mandate Class B fire-retardant wood panels? +

Under the International Building Code (IBC) and European fire safety regulations, Class B fire-retardant panels are mandatory in high-occupancy public egress paths: hotel guestroom corridors and lobbies, airport departure lounges, hospital nurse stations, university lecture auditoriums, theaters, and high-rise commercial interior partitions.

How many sheets of 18mm 4x8 ft Fire Retardant particle board fit into a 40'HQ container? +

Because FR particle board has a slightly higher nominal density (~730-760 kg/m³) due to mineral salt content, a 40'HQ container holds approximately 780 to 800 sheets of 18mm 4×8 ft packed across 16 ISPM-15 heat-treated pallets, reaching the maximum allowable container payload of 26.8 metric tons. Share the quantities for each thickness and format, packing preferences and destination port. Request a quotation with the required document list.

What tooling and dust collection specifications are recommended for cutting FR particle board? +

Due to the abrasive nature of inorganic mineral fire-retardant salts, Polycrystalline Diamond (PCD) saw blades with Triple Chip Grind (TCG) tooth geometry are strongly recommended over standard carbide blades to ensure clean edge cuts and long tool life. High-velocity dust collection (>28 m/s air speed) is required to capture fine mineral dust.

Fire Retardant Particle Board (FR Class B-s1,d0 Red Core)