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Firepoint – ASTM D92
ASTM D92 – Fire Point Testing | Cleveland Open Cup Method
ASTM D92 fire point testing determines the temperature at which a material sustains continuous combustion using the Cleveland Open Cup method. Ideal for high-temperature oils, waxes, lubricants, and heavy petroleum products.
Price per sample:
$175
Additional information
| Turnaround Time | 2 weeks |
|---|---|
| Sample Size | 250mL |
ASTM D92 – Fire Point Testing | Cleveland Open Cup Method
ASTM D92 Fire Point Testing determines the temperature at which a liquid or semi-solid material sustains combustion for at least 5 seconds when exposed to an ignition source under controlled open-cup conditions. Pentyl Labs performs D92 fire-point testing using a Cleveland Open Cup (COC) apparatus, providing precise and repeatable results for high-boiling oils, lubricants, waxes, and greases.
Understanding the ASTM D92 Fire Point Procedure
The ASTM D92 method involves heating a sample in an open brass cup at a uniform rate while periodically sweeping a small test flame across the surface.
-
The flash point is observed when vapor momentarily ignites.
-
Heating continues until the sample sustains a stable flame for ≥ 5 seconds, establishing the fire point.
Because the test is performed in an open cup, vapors freely mix with ambient air, closely simulating real-world exposure conditions such as lubrication systems, hot surfaces, or process environments.
Typical fire points range 10 °C to 30 °C higher than the flash point, providing a more conservative measure of a material’s ignition and burning characteristics.
Applications
ASTM D92 Fire Point Testing is widely used for:
-
Lubricating and hydraulic oils
-
Transformer and turbine fluids
-
Waxes, greases, and polymer additives
-
High-boiling coatings and heavy petroleum distillates
Fire-point data help evaluate thermal stability, safety margins, and suitability for high-temperature operations.
Regulatory & Specification Relevance
Although OSHA’s 29 CFR 1910.106(a)(14) defines only the flash point, many specifications—especially for lubricants and industrial oils—require the fire point as an added safety benchmark. ASTM D92 Fire Point Testing aligns with ISO 2592 and supports documentation for:
-
OSHA & DOT flammable and combustible liquid classification
-
EPA and Health Canada hazard evaluation
-
OEM and ASTM product specifications (e.g., lubricating oil standards)
Results are provided in both °C and °F, including temperature curves, ignition observations, and traceable calibration data in the final Pentyl Labs report.
Comparison & Method Selection
ASTM D92 (open cup) generally yields higher values than closed-cup methods like ASTM D93. It is the preferred procedure for viscous or high-flash materials where a closed cup may trap bubbles or residue.
Internal Reference
To learn how ASTM D92 compares with D93, D56, and D3828, read our Flash Point Test Methods Comparison article.
Contact
Contact Pentyl Labs to request ASTM D92 Fire Point Testing or combined Flash & Fire Point Testing for your materials.
📧 [email protected]
Description
ASTM D92 – Fire Point Testing | Cleveland Open Cup Method
ASTM D92 Fire Point Testing determines the temperature at which a liquid or semi-solid material sustains combustion for at least 5 seconds when exposed to an ignition source under controlled open-cup conditions. Pentyl Labs performs D92 fire-point testing using a Cleveland Open Cup (COC) apparatus, providing precise and repeatable results for high-boiling oils, lubricants, waxes, and greases.
Understanding the ASTM D92 Fire Point Procedure
The ASTM D92 method involves heating a sample in an open brass cup at a uniform rate while periodically sweeping a small test flame across the surface.
-
The flash point is observed when vapor momentarily ignites.
-
Heating continues until the sample sustains a stable flame for ≥ 5 seconds, establishing the fire point.
Because the test is performed in an open cup, vapors freely mix with ambient air, closely simulating real-world exposure conditions such as lubrication systems, hot surfaces, or process environments.
Typical fire points range 10 °C to 30 °C higher than the flash point, providing a more conservative measure of a material’s ignition and burning characteristics.
Applications
ASTM D92 Fire Point Testing is widely used for:
-
Lubricating and hydraulic oils
-
Transformer and turbine fluids
-
Waxes, greases, and polymer additives
-
High-boiling coatings and heavy petroleum distillates
Fire-point data help evaluate thermal stability, safety margins, and suitability for high-temperature operations.
Regulatory & Specification Relevance
Although OSHA’s 29 CFR 1910.106(a)(14) defines only the flash point, many specifications—especially for lubricants and industrial oils—require the fire point as an added safety benchmark. ASTM D92 Fire Point Testing aligns with ISO 2592 and supports documentation for:
-
OSHA & DOT flammable and combustible liquid classification
-
EPA and Health Canada hazard evaluation
-
OEM and ASTM product specifications (e.g., lubricating oil standards)
Results are provided in both °C and °F, including temperature curves, ignition observations, and traceable calibration data in the final Pentyl Labs report.
Comparison & Method Selection
ASTM D92 (open cup) generally yields higher values than closed-cup methods like ASTM D93. It is the preferred procedure for viscous or high-flash materials where a closed cup may trap bubbles or residue.
Internal Reference
To learn how ASTM D92 compares with D93, D56, and D3828, read our Flash Point Test Methods Comparison article.
Contact
Contact Pentyl Labs to request ASTM D92 Fire Point Testing or combined Flash & Fire Point Testing for your materials.
📧 [email protected]
