Self-Extinguishing FR Plastic Compound
FlamEL® 4.0
Applied materials
FR plastic
For extrusion, injection, and a wide range of plastic parts
Heat absorption, vapor release, protective skin: three-step control of fire spread
LOI up to 41% - self-extinguishing in air
Secures 60–80 s evacuation window in early fire stage
Product Overview
Self-Extinguishing FR Plastic Compound
An inorganic-based thermoplastic specialty FR plastic compound that releases water vapor on fire contact and forms a protective alumina film, stopping the spread of fire on its own - a next-generation FR solution.
FlamEL® 4.0 is an inorganic thermoplastic specialty FR compound for extruded sheets, injection-molded parts, and most other thermoplastic products.
Parts made with FlamEL® 4.0 absorb heat, release water vapor, and form a protective alumina layer on fire contact, stopping spread and shielding the substrate.
Harmful gas released on fire contact is markedly lower, sharply reducing casualties in the fire compartment.
For extrusion, injection, and a wide range of plastic parts
Heat absorption, vapor release, protective skin: three-step control of fire spread
LOI up to 41% - self-extinguishing in air
Secures 60–80 s evacuation window in early fire stage
Recommended Processing
- Sheet or roll (0.3 mm and up)
- Direct bonding or adhesion to glass, fabric, and other substrates
- Injection molding or thermoplastic processing
Available Forms
- Plastic compound
- Masterbatch for selected resins
FlamEL® 4.0 Applications
- Battery cases and ECU modules for vehicles and electrical products
- Distribution boards and heat-using appliances
- Data-center equipment enclosures
- Data-center fit-out (flooring, cladding, partition walls)
- FR interiors for hazardous-goods storage and transport
- FR cladding or protective sheet for steel and wood
Mechanism
FR action in a fire
- FlamEL® 4.0 absorbs the heat of the fire
- Aluminum hydroxide absorbs heat, decomposes, and releases water vapor
- An alumina skin (Al₂O₃) forms on the surface
- Fire spread is delayed and the substrate or part protects itself
FlamEL® 4.0 Fire-Suppression Process
- Heat absorption: 1060 J/g (AH)
- Water-vapor release ➔ suppresses fire spread
- Alumina film formation ➔ heat barrier
- Additional protection of the substrate
- A 3 mm sheet releases 1,860 L of water vapor per 1 m²
- Aluminum hydroxide thermal decomposition (from 220°C)
FlamEL® 4.0 Technical Features
- Releases only water and CO₂ in a fire *
- No dioxin emissions *
- Absorbs surface heat to protect the substrate
- REACH compliant; hazardous compounds not detected*
* Result of FlamEL® 4.0 burned alone
Thermal decomposition and heat consumption of aluminum hydroxide
| Item | Details |
|---|---|
| Decomposition reaction | 2Al(OH)₃ ➝ Al₂O₃ + 3H₂O |
| Decomposition temperature | 220°C ~ |
| Decomposition enthalpy ΔH | 1060 J/g |
Key Tests — Performance & Safety
FlamEL® 4.0 Performance & Safety Tests
| Item | Method / Lab | Result |
|---|---|---|
| Flammability | UL 94 : 2023, 20 mm Vertical burning test / FITI | V-0 rating UL94:2023 |
| Flammability | UL 94 : 2024, 2.2 mm Vertical burning test / FITI | V-0 rating UL94:2024 |
| Gas toxicity | KS F 2271:2021, 0.6mm / KCL | PASS (≥ 9 min) / Mean incapacitation time 13:12 / 14:47 |
| RoHS heavy metals and hazardous compounds | IEC 62321-6 and others / SGS | PBBs/PBDEs not detected |
| SVHC, REACH compliance | SGS | 241 SVHCs not detected |
Key Tests — Comparison Test
FlamEL® 4.0 Comparison Test
Versus other FR resins
Test lab: KOTITI
| Item | Sub-item | Test method | FlamEL® 4.0 Soft | FlamEL® 4.0 Hard | FR PP | FR ABS | FR PC |
|---|---|---|---|---|---|---|---|
| Flammability | UL 94 : 2026 | V0 | V0 | V0 | V0 | V0 | |
| Gas toxicity (≥ 9 min) | KS F 2271:2021 (m:s) | 14:01~14:29 | 14:14~14:49 | 5:04~5:43 | 7:08~7:31 | 10:26~13:39 | |
| Heat Release Rate | Total Heat Release | MOLIT Notice No. 2023-24 | 40.6~41.4 MJ/m2 | 56.0~58.4 MJ/m2 | 108.0~112.5 MJ/m2 | 45.9 ~ 49.2 MJ/m2 | 81.5 ~ 85.9 MJ/m2 |
| HRR time over 200kW/m2 | 0s | 16s~20s | 217s~226s | 102s~107s | 162s~195s | ||
| Whole melting | N/O | N/O | Hole | Hole | Hole | ||
| Limited Oxygen Index | ISO 4589-2/2.82mm / KOTITI | 41.0 % | 35.1 % | 26.3 % | 29.5 % | 34.9 % | |
| Toxicity Index | BS 6853 (Annex B.2) | 0.25 | 0.16 | 3.44 | 1.87 | 0.18 |
A plastic that buys time in the first minutes of a fire
Among the lowest THR levels in plastics
THR stays at 0 for about the first minute (60–80 s), securing evacuation time
Test Video
4.0 Burning Test (KOTITI)
Key Products — FlamEL® 4.0 ATH 60H
FlamEL® 4.0ATH 60H
Hard Type Self-Extinguishing FR Plastic Compound
Product Features
- Engineered for rigid plastic parts, with strong structural support and fire resistance
- Contains the fire while retaining strength and durability
- Suited to wall panels, façades, electrical housings, and pipe protection
- Stays non-combustible in a fire and protects structures at high temperature
- Improved baseline sound absorption
| Test item | Detail | Condition | Unit | FlamEL® 4.0 ATH 60H | Conditioning | Test method |
|---|---|---|---|---|---|---|
| Physical properties | Specific gravity | 23°C | 1.535 | KS M ISO 1183 | ||
| Physical properties | Water absorption | 23°C | % | 0.02 | 50°C, 24h | In accordance with ASTM D570 |
| Mechanical properties | Tensile strength | Tensile strength at break | Mpa | 5.7 | KS M ISO 527-2 | |
| Mechanical properties | Elongation | Elongation at break | % | 43 | KS M ISO 527-2 | |
| Mechanical properties | Yield strength | Upper yield | MPa | 5.9 | KS M ISO 527-2 | |
| Mechanical properties | Yield elongation | Upper yield | MPa | 0.65 | KS M ISO 527-2 | |
| Mechanical properties | Tensile modulus | - | MPa | 1,090 | KS M ISO 527-2 | |
| Mechanical properties | Flexural strength | - | MPa | 9.8 | KS M ISO 178 | |
| Mechanical properties | Flexural modulus | - | MPa | 1,080 | KS M ISO 178 | |
| Mechanical properties | Izod impact strength | 2.0mm | kJ/m² | 19 | KS M ISO 180 (Notched) | |
| Mechanical properties | Izod impact strength | 2.0mm | kJ/m² | 9.5 | -30°C, 3h | KS M ISO 180 (Notched) |
| Mechanical properties | Charpy impact strength | 2.0mm | kJ/m² | 21 | KS M ISO 179-1 (Notched) | |
| Mechanical properties | Charpy impact strength | 2.0mm | kJ/m² | 7.3 | -30°C, 3h | KS M ISO 179-1 (Notched) |
| Mechanical properties | Hardness (Rockwell) | R-Scale | - | 24 | In accordance with KS M ISO 2039-2 | |
| Thermal properties | Heat deflection temp. | 1.82 Mpa,Flat wise | °C | 39 | KS M ISO 75-1 | |
| Thermal properties | Vicat softening temp. | Test load 50 N | °C | 43 | KS M ISO 306-B120 | |
| Electrical properties | Surface resistivity | - | Ω/sq | 2.6 x 1014 | In accordance with ASTM D257 | |
| Electrical properties | Volume resistivity | - | Ω∙cm | 8.6 x 1013 | In accordance with ASTM D257 | |
| Electrical properties | Dielectric Constant | 60 Hz | - | 6.20 | ASTM D150 | |
| Electrical properties | Dissipation Factor | 60 Hz | - | 0.0141 | ASTM D150 | |
| Electrical properties | Dielectric Constant | 100 kHz | - | 4.71 | ASTM D150 | |
| Electrical properties | Dissipation Factor | 100 kHz | - | 0.0079 | ASTM D150 | |
| Electrical properties | Dielectric Constant | 1 MHz | - | 4.47 | ASTM D150 | |
| Electrical properties | Dissipation Factor | 1 MHz | - | 0.0083 | ASTM D150 | |
| FR properties | Flammability | 3.2mm | - | V-0 | UL 94 : 2023 |
Key Products — FlamEL® 4.0 ATH 70S
FlamEL® 4.0ATH 70S
Soft Type Self-Extinguishing FR Plastic Compound
Product Features
- Designed for flexible plastic uses, with excellent flexibility and fire performance
- Releases water vapor at high temperature to cool the part and slow flame spread
- For soft household plastics: cushions, mattresses, soft leather, flexible wallcoverings, and carpet
- Also for FR protection of cables and electrical housings
| Test item | Detail | Condition | Unit | FlamEL® 4.0 ATH 70S | Conditioning | Test method |
|---|---|---|---|---|---|---|
| Physical properties | Specific gravity | 23°C | 1.679 | KS M ISO 1183 | ||
| Physical properties | Water absorption | 23°C | % | 0.02 | 50°C, 24h | In accordance with ASTM D570 |
| Mechanical properties | Tensile strength | Tensile strength at break | MPa | 2.4 | KS M ISO 527-2 | |
| Mechanical properties | Elongation | Elongation at break | % | 38 | KS M ISO 527-2 | |
| Mechanical properties | Yield strength | Upper yield | MPa | 0.9 | KS M ISO 527-2 | |
| Mechanical properties | Yield elongation | Upper yield | MPa | 1.10 | KS M ISO 527-2 | |
| Mechanical properties | Tensile modulus | - | MPa | 64 | KS M ISO 527-2 | |
| Mechanical properties | Flexural strength | - | MPa | 2.1 | KS M ISO 178 | |
| Mechanical properties | Flexural modulus | - | MPa | 70 | KS M ISO 178 | |
| Mechanical properties | Izod impact strength | 2.0mm | kJ/m² | 13 | KS M ISO 180 (Notched) | |
| Mechanical properties | Izod impact strength | 2.0mm | kJ/m² | 17.0 | -30°C, 3h | KS M ISO 180 (Notched) |
| Mechanical properties | Charpy impact strength | 2.0mm | kJ/m² | 22 | KS M ISO 179-1 (Notched) | |
| Mechanical properties | Charpy impact strength | 2.0mm | kJ/m² | 7.2 | -30°C, 3h | KS M ISO 179-1 (Notched) |
| Mechanical properties | Hardness (Rockwell) | R-Scale | - | 46 | In accordance with KS M ISO 2039-2 | |
| Thermal properties | Vicat softening temp. | Test load 10 N | °C | 47 | KS M ISO 306-A120 | |
| Electrical properties | Surface resistivity | - | Ω/sq | 1.2 x 1014 | In accordance with ASTM D257 | |
| Electrical properties | Volume resistivity | - | Ω∙cm | 2.1 x 1013 | In accordance with ASTM D257 | |
| Electrical properties | Dielectric Constant | 60 Hz | - | 8.40 | ASTM D150 | |
| Electrical properties | Dissipation Factor | 60 Hz | - | 0.0132 | ASTM D150 | |
| Electrical properties | Dielectric Constant | 100 kHz | - | 6.40 | ASTM D150 | |
| Electrical properties | Dissipation Factor | 100 kHz | - | 0.0048 | ASTM D150 | |
| Electrical properties | Dielectric Constant | 1 MHz | - | 6.20 | ASTM D150 | |
| Electrical properties | Dissipation Factor | 1 MHz | - | 0.0047 | ASTM D150 | |
| FR properties | Flammability | 2.2 mm, 3.2mm | - | V-0 | UL 94 : 2023 |
