![]() ![]() However, it should not preclude the observance of regulations. About ASTM D396-21ĪSTM D396-21 is intended to be used by purchasing agencies in formulating specifications included in contracts for purchases of fuel oils and for the guidance of customers in selecting fuel oils. They are used in domestic and small industrial burners. Biodiesel blends are given the abbreviation BXX, in which XX represents the volume percentage of biodiesel in the blend (6 to 20%). Biodiesel Blendsįuel oils with grades B6-20 are middle distillate fuel blended with biodiesel. 5 fuels are of greater viscosity, and they are generally composed of 75% to 80% of No. They are used in commercial or industrial burners that have been equipped for the appropriate viscosity range. Heavy distillate fuels or middle distillate/residual fuel blends comprise the No. 6 fuels, also known as residual fuel oil (RFO) or heavy fuel oil (HFO), are the remainder of the crude oil after gasoline and distillate fuel oils have been extracted through distillation. 6 Fuel (Residual Fuel Oil or Heavy Fuel Oil) 2 fuel does moderately comprise some of the fuel oil used for industrial purposes, this duty is generally that of higher grades. 2 fuel is what we commonly call “heating oil,” meaning that it is used in atomizing type burners for domestic heating. ![]() ![]() Its common applications are for portable outdoor stoves and portable outdoor heaters. 1 fuel oil is a light distillate fuel chemically comparable to kerosene. Because of this, many states have limited the amount of allowable sulfur in heating oils. Heating oils and other oil fuels with less sulfur emit less of the element into the atmosphere when burned, and are thus cleaner. 1 S15 contains no greater than 15 ppm sulfur. This includes maximum sulfur content, meaning that No. The nomenclature of these closely parallels that of diesel fuels, as established by ASTM D975-21. According to ASTM D396-21, there are the following fuel oil grades: ![]() Fuel Oil Grades in ASTM D396įuel oils are used primarily for space heating and electric power generation. Second is distillate fuel oil, in the form of diesel fuel and fuel oils.ĪSTM D396-21: Standard Specification for Fuel Oils sets various grades of fuel oil. The majority is consumed as gasoline by automobiles. The remnants of decomposed phytoplankton and algae, pressurized and heated on the seafloor, petroleum makes up over one-third of the total energy used in the United States. ![]()
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