Melamine Foam Fire Certifications — 9 Standards (KFI·ASTM·DIN·EN) Guide

When selecting a sound absorber, we tend to look first at NRC value, thickness, and design. But in actual construction projects, there is one thing that gets checked before all of that: fire and flame-retardant certification.

No matter how well a sound absorber performs, if it does not carry the certifications required for the target country and application, it cannot appear on the specification.

The VIXUM melamine foam distributed by Tornex holds 9 international fire and flame-retardant certifications across 5 regions — Korea, the USA, Canada, Germany, and Europe — covering both construction and railway applications. Why are so many certifications needed? We walk through them one by one.

Why Sound Absorbers Need Fire Certification

Absorbers such as melamine foam, PET panels, and wood-wool board are typically installed on ceilings, walls, and partitions. When fire breaks out, these surfaces are among the first pathways for flame and smoke to travel.

This is why building codes in every country regulate the flame-spread characteristics and smoke generation of interior finishes. Specifying a sound absorber without fire certification is not optional for commercial buildings, public facilities, or transportation infrastructure projects — it is mandatory.

Fire certification is more than regulatory compliance: it is evidence of material quality. A material that has received international certification has passed testing under rigorous, reproducible conditions at an independent, accredited laboratory.

It provides a level of confidence that a product data sheet alone cannot give to procurement managers, designers, and project owners alike.

National Fire Certification Frameworks — What Each Standard Means

Each country and region operates its own fire safety standard system. These standards are not interchangeable. A Korean KFI certificate does not satisfy German DIN requirements, and vice versa.

Korea — KFI & KCL

The fire safety framework for interior finishes in Korea is administered by the Korea Fire Industry Technology Institute (KFI). Flame-retardant performance certification is mandatory under the Fire Service Act for certain building types — hotels, hospitals, schools, multi-use facilities, performance venues, and others.

UL 94 vertical and horizontal burn testing is conducted by Korea Conformity Laboratories (KCL) and evaluates the self-extinguishing characteristics of the material. The top rating, V-0, means self-extinction within 10 seconds with no flaming drip.

USA — ASTM E84

Also known as the Steiner Tunnel Test, ASTM E84 is the primary surface burning characteristics standard in North America. Over a 10-minute test, it measures the Flame Spread Index (FSI) and the Smoke Developed Index (SDI).

Most commercial buildings require Class A under the IBC (FSI ≤25 / SDI ≤450). Testing is carried out by accredited third-party laboratory VTEC.

Canada — CAN/ULC S102

The National Building Code of Canada adopts CAN/ULC S102 as its reference surface burning test. Test reports from EXOVA (now Element Materials Technology) are recognised by Canadian authorities.

Germany — DIN 4102-1 & DIN 5510-2

Germany applies two DIN standards depending on application. DIN 4102-1 classifies building materials from A (non-combustible) through B3 (combustible); B1 (flame-retardant) is the standard requirement for commercial interior finishes.

DIN 5510-2 is a dedicated railway vehicle material standard with significantly more stringent requirements. Testing is carried out by SGS.

Europe — EN 13501-1 & EN 45545-2

EN 13501-1's European classification system assigns Euroclass ratings (A1·A2·B·C·D·E·F) to construction products, providing a combined assessment of reaction to fire + smoke production (s1/s2/s3) + flaming droplets (d0/d1/d2).

EN 45545-2 is the unified European standard for fire protection in railway vehicles. Both European certifications are issued by specialist fire testing laboratory Ignito. "Materials passing European standards" represents a strong selling point for premium positioning in the domestic B2B market and for international project bids.

Why Does a Single Material Need Nine Certifications?

Simply put: fire safety is not standardised globally, and the risk profile differs for each application environment.

Fragmented National Standards

Each country runs its own test methods, classification systems, and documentation requirements. A material being exported to Germany must present DIN certification. A Korean KFI certificate is not accepted, even if the material's performance is identical.

Separate Requirements by Application

A material approved for general construction does not automatically qualify for use in railway vehicles. Railway fire standards (DIN 5510-2, EN 45545-2) apply distinct test conditions and pass criteria that reflect the particular hazard profile of an enclosed, high-density transit environment.

The nine certifications held by VIXUM melamine foam are the result of a deliberate investment by Dongsung Chemical to make this material specifiable in virtually any market and application.

VIXUM Melamine Foam — Full Certification Status

The following is the complete certification status of VIXUM melamine foam raw material, as tested by independent laboratories:

All certifications were obtained by VIXUM melamine foam manufacturer Dongsung Chemical Co., Ltd. The critical point is that the certifications remain valid after Tornex has carried out secondary processing — cutting, shaping, painting, CNC machining, and other fabrication.

As a result, all 130-plus variants in the Tornex melamine foam line-up are backed by the same certifications.

TORNEX: Certified Raw Material, Custom Fabrication

As the official dealer for Dongsung Chemical, Tornex sources VIXUM melamine foam and provides value-added fabrication and delivery services:

• Certified raw material — VIXUM certificates provided as documentation with every order
• Custom fabrication — cutting, dimensioning, CNC edge profiling, custom colour painting
• Project delivery — lead time 1–5 business days for standard orders
• Technical support — acoustic performance data (NRC, αw) available alongside fire certification documentation

Whether you need a KFI flame-retardant certificate for a hospital renovation, DIN 4102-1 for a German-standard office building, or EN 13501-1 documentation for a European joint-venture project — Tornex can supply the relevant certificate together with the product.

Glossary

• NRC (Noise Reduction Coefficient) — the fraction of sound energy absorbed by a material. A single value between 0 and 1; the closer to 1, the better the absorption.
• UL 94 V-0 — the highest rating in Underwriters Laboratories' plastics flammability test. Self-extinction within 10 seconds + no flaming drips.
• ASTM E84 / Class A — US surface burning characteristics test (Steiner Tunnel Test). Class A = FSI ≤25, SDI ≤450. Required by the IBC as the standard for commercial building interior finishes.
• FSI · SDI — Flame Spread Index · Smoke Developed Index. The two measurements produced by ASTM E84.
• CAN/ULC S102 — ULC's Canadian surface burning test standard. Adopted by the National Building Code of Canada (NBC).
• DIN 4102-1 / B1 — German building material fire classification (A1/A2/B1/B2/B3). B1 = flame-retardant (Schwer entflammbar). Standard requirement for commercial interior finishes.
• DIN 5510-2 — German railway vehicle fire standard. Combines S (combustion) / SR (smoke) / ST (drip) ratings (e.g., S4 SR2 ST2).
• EN 13501-1 / Euroclass — EU unified fire classification for construction products. A1 (non-combustible) through F (highly flammable) + smoke (s1/s2/s3) + drip (d0/d1/d2). Example: B-s1,d0.
• EN 45545-2 / HL1–HL3 — EU unified railway vehicle fire standard. Three Hazard Levels: HL1 (tram/freight) < HL2 (regional rail) < HL3 (metro/high-speed/long-distance tunnel/sleeper).
• KFI · KCL — Korea Fire Industry Technology Institute · Korea Conformity Laboratories. Accredited domestic testing bodies.

References

The standards and test criteria referenced in this article can be verified from the following primary sources.

• UL 94 V-0
• ASTM E84 (Steiner Tunnel Test) — VTEC Labs
• EN 13501-1 Euroclass — Measurlabs
• EN 45545-2 Hazard Level — Measurlabs
• DIN 4102-1 Building Material Classification — Ecosafene
• DIN 5510-2 Railway Components — Shida Seal Group