ASTM E84 Test for Surface Burning Characteristics of Building Materials
ASTM E84 is used to determine the response of building materials to fires. It is intended for use on exposed surfaces such as walls and ceilings.
TRUSTED BY
Precision-driven testing for dimensional accuracy and compliance
- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
Overview
The ASTM E84 standard, commonly known as the “Tunnel Test,” is among the most used fire-testing methodologies for construction materials in North America. Its main objective is to measure the amount of smoke a material produces when exposed to a controlled flame and how it contributes to fire spread.
According to the International Building Code (IBC) and the NFPA Life Safety Code, this test is essential for determining whether a material is safe for use in specific areas of a building (such as corridors, exits, or plenum spaces).
Scope, Applications, and Benefits
Scope
ASTM E84, commonly known as the Steiner Tunnel Test, determines the relative surface burning characteristics of building materials when exposed to a controlled fire. The test evaluates the Flame Spread Index (FSI) and Smoke Developed Index (SDI) of interior finish materials, providing a standardized method to assess their contribution to fire growth and smoke generation. The results are used for material classification, code compliance, and fire safety evaluations in buildings.
Applications
- Classification of interior wall, ceiling, and floor finish materials.
- Evaluation of the fire performance of building products such as panels, insulation, coatings, and laminates.
- Compliance testing for building codes and fire safety regulations.
- Selection of materials for fire-rated and fire-resistive construction.
- Quality control and product certification for manufacturers.
- Comparative assessment of different materials for fire risk analysis.
Benefits
- Provides standardized and widely accepted fire performance indices (FSI and SDI)
- Supports compliance with national and international building and fire codes
- Helps in reducing fire hazards by enabling informed material selection
- Assists designers and engineers in improving building fire safety
- Enables manufacturers to demonstrate the fire performance of their products
- Facilitates regulatory approval and market acceptance of building materials
Testing Process
Sample Preparation
Prepare a test specimen of specified dimensions and condition it at standard laboratory temperature and humidity.
1Apparatus Setup
Install the specimen on the ceiling of the Steiner tunnel furnace with the exposed surface facing downward.
2Calibration
Verify tunnel airflow, burner output, and reference calibration using standard materials.
3Reporting
Report FSI, SDI, material description, mounting method, and any observed behavior during testing.
4Technical Specifications
| Parameter | Details |
|---|---|
| Test Apparatus | Steiner Tunnel |
| Specimen Orientation | Ceiling-mounted, exposed face downward |
| Airflow | ~1.22 m/s (240 ft/min) |
| Smoke Developed Index | Measured by a photoelectric cell |
| Reference Materials | Cement board (FSI 0), Red oak (FSI 100) |
| Test Output | FSI and SDI values |
Instrumentation Used
- Steiner Tunnel fire test apparatus
- Gas burner and fuel supply system
- Flame spread measurement system
- Smoke density measurement system (photocell)
- Temperature and airflow control instruments
- Specimen mounting frame
- Data acquisition and recording system
Results and Deliverables
- Flame Spread Index (FSI) value determined for the tested material.
- Smoke Developed Index (SDI) value measured during flame exposure.
- Classification of material based on FSI (Class A, B, or C, if applicable).
- Observed flame propagation behavior along the specimen surface.
- Smoke generation characteristics during the test period.
- Any abnormal behavior, such as dripping, melting, or delamination.
- Test conducted under controlled airflow and furnace conditions.
- Results used for fire performance comparison and code compliance.
Frequently Asked Questions
Case Studies
In-depth examination of genuine material testing solutions
Dopant and ultra-low concentration elemental analysis using Scanning…
Dopant and ultra-low concentration elemental analysis using Scanning…
EELS analysis of gate and channel is performed on fin field-effect transistors (finFETs). Scanning transmission electron...
Read Case StudyAnalysis of degradation of PVC pipe using Fourier…
Analysis of degradation of PVC pipe using Fourier…
Introduction PVC is the polymer primarily used to make pipes for plumbing, drainage, and electrical conduits....
Read Case StudyNano-scale roughness measurement of Si-wafers by Atomic Force…
Nano-scale roughness measurement of Si-wafers by Atomic Force…
Nano-scale surface roughness is a critical parameter in fabricated thin-films that are used in optics, solar...
Read Case Study
Request a Quote
Submit your material details and receive testing procedures, pricing, and turnaround time within 24 hours.
Quick Turnaround and Hasslefree process
Confidentiality Guarantee
Free, No-obligation Consultation
100% Customer Satisfaction
