What Is ISO 3795 Automotive Flammability?
ISO 3795 is an international standard used to determine the flammability characteristics of materials used in vehicle interiors by measuring their horizontal burning rate when exposed to a small flame. It is widely applied to materials within the occupant compartment of road vehicles, tractors, and agricultural machinery.
The test evaluates how quickly a material ignites and how rapidly a flame propagates across its surface. By measuring the burning rate in millimeters per minute (mm/min), ISO 3795 helps assess whether interior materials contribute to fire spread and ensures safer material selection in transportation applications.
Applications and Benefits of ISO 3795 Automotive Flammability Testing
Scope
ISO 3795 testing evaluates:
- Horizontal burning rate (mm/min)
- Flame spread behavior
- Ignition resistance
- Self-extinguishing characteristics
- Fire propagation potential
Applications
- Automotive interior component testing
- Vehicle fire safety evaluation
- Material qualification for vehicle manufacturing
- Testing of upholstery, plastics, and insulation materials
- Quality control during production
- Research and development of flame-resistant materials
Benefits
- Evaluates the fire propagation characteristics of materials
- Ensures compliance with vehicle safety standards
- Improves passenger safety during fire incidents
- Supports material selection for vehicle interiors
- Provides standardized testing procedures
- Enhances quality control in automotive manufacturing
- Helps develop flame-retardant materials
Our ISO 3795 Testing Procedure
Sample Preparation
Specimens (~356 mm length, ≤13 mm thickness) are cut and conditioned as per standard.
1Flame Application
A small flame is applied to the specimen horizontally for ~15 seconds.
2Burning Measurement
Flame travel distance and time are recorded after ignition.
3Data Analysis
Burning rate is calculated in mm/min based on distance and time.
4ISO 3795 Test Parameters and Requirements
| Parameter | Details |
|---|---|
| Applicable Materials | Plastics, textiles, foams, rubber, interior trim materials |
| Sample Orientation | Horizontal |
| Specimen Thickness | Up to ~13 mm |
| Specimen Dimensions | Typically 356 mm × 100 mm (trimmed to required width) |
| Key Formula | B = (distance/time) × 60 |
| Flame Application Time | Approximately 15 seconds |
| Measurement Parameter | Burning rate |
| Output Units | mm/min |
- Horizontal flammability test chamber
- Gas burner with controlled flame height
- Specimen holder and mounting frame
- Timing device or stopwatch
- Measuring scale for burn length
- Environmental conditioning chamber
- Safety ventilation system
Equipment and Instrumentation Used for ISO 3795 Testing
What You Receive: Test Report, Data, and Certification
- Horizontal burn rate measurement
- Flame propagation behavior analysis
- Material fire resistance evaluation
- Automotive safety testing reports
- Quality control documentation
- Reports
ISO 3795 Automotive Flammability FAQs
ISO 3795 is a test standard that measures the speed at which materials used in the interior of the vehicle burn when exposed to a small flame. The test checks the horizontal burning rates of the materials and is used to determine the suitability of the materials for use in the interior of the vehicle and in agricultural equipment.
The test is useful in determining the speed at which materials catch and burn when exposed to a flame, ensuring that the materials in the interior of the vehicle do not catch fire easily and thereby increasing the safety of the passengers while driving the vehicle.
The test measures the rate at which the flame travels along the material when a small ignition source is applied. The burning velocity is usually measured in millimeters per minute.
For the test to be performed, a material sample is placed horizontally in a combustion chamber. A small flame is then applied to the material for a given time period. The time it takes for the flame to reach the set marks is then measured to enable the computation of the burning rate.
For the test specimens, they usually measure 356 mm in length and about 100 mm in width. However, the width can vary depending on the material or component being tested.
ISO 3795 evaluates the horizontal burning rate of materials used in vehicle occupant compartments after exposure to a small flame. A prepared specimen is mounted horizontally inside a controlled combustion chamber, and a burner flame is applied to one end for a specified period. The flame spread, burning distance, and time are recorded to calculate the burning rate in millimeters per minute. The test also determines whether the material continues burning or self-extinguishes after removal of the ignition source.
Automotive fire testing evaluates the burning behavior of materials used in vehicle interiors, including textiles, plastics, foams, upholstery, and composite materials. Under ISO 3795, specimens are exposed to a small flame in a horizontal position inside a combustion chamber. The burning distance and time are measured to determine the horizontal burning rate. These results help manufacturers assess material flammability and verify compliance with applicable automotive safety requirements.
A flammability test standard establishes controlled procedures for evaluating how materials respond to ignition and flame exposure. ISO 3795 specifies specimen preparation, horizontal mounting, flame exposure, and measurement of burning behavior for vehicle interior materials. The resulting burning rate and observations of flame extinguishment are compared with the acceptance criteria specified by the applicable regulation or product requirement. This helps maintain consistent testing and evaluate material performance across production batches.
Why Choose Infinita Lab for Automotive Flammability Testing
When your Automotive Flammability results have to hold up - for compliance, a customer audit, or an engineering decision - ISO 3795 accuracy and an unbiased third-party report matter more than price. Infinita Lab routes your ISO 3795 automotive flammability testing to ISO/IEC 17025-accredited U.S. partner labs with hands-on method experience, so you get defensible data, transparent reporting, and turnaround times built around your project deadline - not ours.
Need ISO 3795 Automotive Flammability Testing You Can Rely On?
Send query us at hello@infinitalab.com or call us at (888) 878-3090 to learn more about our services and how we can support you.
