{"id":4436,"date":"2025-06-25T12:47:12","date_gmt":"2025-06-25T17:47:12","guid":{"rendered":"https:\/\/www.bioblend.com\/?p=4436"},"modified":"2025-06-25T12:47:12","modified_gmt":"2025-06-25T17:47:12","slug":"is-hydraulic-fluid-flammable","status":"publish","type":"post","link":"https:\/\/www.bioblend.com\/fr\/is-hydraulic-fluid-flammable\/","title":{"rendered":"Is Hydraulic Fluid Flammable? Learn Which Types Pose Fire Risks"},"content":{"rendered":"

Yes\u2014most <\/span>hydraulic fluids<\/span><\/a> are flammable. However, the degree of flammability varies significantly depending on the base type of the fluid. In industrial settings where equipment operates under high pressure and heat, a fire fueled by hydraulic fluid can pose serious risks to personnel and property.<\/span><\/p>\n

Choosing the right hydraulic fluid is critical for operational safety. Understanding what makes hydraulic fluids flammable and which options offer fire resistance can help you select a solution tailored to your work environment.<\/span><\/p>\n

Flammability of Different Types of Hydraulic Fluid<\/b><\/h2>\n

The base composition of a fluid\u2014whether it\u2019s mineral oil, synthetic, water-based, or biodegradable\u2014plays a major role in how it reacts under heat and pressure. Understanding the differences between these types is essential for <\/span>choosing the right hydraulic fluid<\/span><\/a> for your application and minimizing fire risk.<\/span><\/p>\n

Mineral Oil-Based Hydraulic Fluid<\/b><\/h3>\n

This is the most common type of hydraulic fluid and also among the most flammable. Derived from petroleum, it has a relatively low flashpoint and ignites easily when sprayed or leaked onto a hot surface.<\/span><\/p>\n

Synthetic Hydraulic Fluid<\/b><\/h3>\n

Synthetic fluids offer improved performance in extreme temperatures, but not all are fire-resistant. Some synthetic blends are engineered to be less flammable, while others retain a risk of ignition. Always review the technical data sheet for flashpoint and firepoint.<\/span><\/p>\n

Water-Based Hydraulic Fluid<\/b><\/h3>\n

These fluids include water-glycol and water-oil emulsions. Thanks to high water content, they have very low flammability and are often used in fire-sensitive environments like steel mills or underground mining.<\/span><\/p>\n

Biodegradable Hydraulic Fluid<\/b><\/h3>\n

Eco-friendly or environmentally responsible fluids, like those based on vegetable oil or synthetic esters, can vary in flammability. While many <\/span>biodegradable fluids<\/span><\/a> perform well in terms of lubrication, not all meet fire resistance standards. Look for Factory Mutual (FM) -certified HFDU options like BioBlend\u2019s BioFlo HFDU and BioFlo Synthetic HFDU fluids when fire safety is a concern.<\/span><\/p>\n

Comparison of Hydraulic Fluid Flammability<\/b><\/h2>\n

 <\/p>\n\n\n\n\n\n\n\n
Hydraulic Fluid Type<\/b><\/td>\nFlashpoint<\/b><\/td>\nFirepoint<\/b><\/td>\nCommon Applications<\/b><\/td>\n<\/tr>\n
Mineral Oil-Based<\/span><\/td>\n~150\u00b0C \/ 302\u00b0F<\/span><\/td>\n~200\u00b0C \/ 392\u00b0F<\/span><\/td>\nManufacturing, construction, and agriculture<\/span><\/td>\n<\/tr>\n
Synthetic<\/span><\/td>\n~180\u00b0C \/ 356\u00b0F<\/span><\/td>\n~220\u00b0C \/ 428\u00b0F<\/span><\/td>\nMobile equipment, aerospace<\/span><\/td>\n<\/tr>\n
Water-Based<\/span><\/td>\n~149\u00b0C \/ 300\u00b0F<\/span><\/td>\n~232\u00b0C \/ 450\u00b0F<\/span><\/td>\nSteel plants, mining<\/span><\/td>\n<\/tr>\n
Biod\u00e9gradable<\/span><\/td>\n~250\u00b0C \/ 482\u00b0F<\/span><\/td>\n~300\u00b0C \/ 572\u00b0F<\/span><\/td>\nHigh-temperature, fire-prone sites<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Note that these figures are general estimates for non-HFDU products. Actual performance will vary by provider. Always consult your owners manual(s) for proper hydraulic fluid requirements. Depending upon your operation your insurance company may have additional fire resistance requirements or suggestions.\u00a0<\/span><\/p>\n

Who Needs Non-Flammable Hydraulic Fluid?<\/b><\/h2>\n

Industries where hydraulic systems operate near open flames, molten metal, or hot surfaces benefit most from non-flammable or fire-resistant hydraulic fluids. These include:<\/span><\/p>\n