Mobil Pyrotec HFD-U 46

Standards & approvals

• ISO 12922 HFDU

  ISO 12922 HFDU — fire-resistant hydraulic fluid

  Class HFDU of ISO 12922: water-free, fire-resistant synthetic hydraulic fluids for foundries, steel plants and mines.

Specifications

Brand

Mobil (ExxonMobil)

Range

Mobil Pyrotec

Category

Hydraulic oils

Viscosity

ISO VG 46

Manufacturer code

201560106050

Availability

On request

Typical characteristics

Manufacturer's description

Mobil Pyrotec HFD-U 46 is a fire-resistant hydraulic fluid (ISO VG 46) engineered to meet the requirements of DIN EN ISO 12922. Built on a fully synthetic ester base oil with environmentally friendly additives, it is readily biodegradable in accordance with DIN ISO 15380, offering high versatility for lubricating a broad range of industrial and off-highway equipment. Mobil Pyrotec HFD-U 46 has a density of 919 kg/m³ at 15 °C, a kinematic viscosity of 48 mm²/s at 40 °C and 10 mm²/s at 100 °C, a viscosity index of 195 and a pour point of -39 °C. It is recommended for areas with increased fire risk — such as steel mills, metallurgical plants, and underground mining — as well as environmentally sensitive locations. Typical applications include hydraulic and oil circulation systems in continuous casters, blast furnaces, reheating furnaces, underground and open-pit mining, tunnelling, forestry equipment and construction equipment. The grade offers excellent thermal and oxidation stability that supports system cleanliness, deposit reduction and long oil and filter life, along with outstanding anti-corrosion and anti-wear properties and a wide low-temperature operating range. It holds FM Global Approval Standard 6930, and the series meets EU Ecolabel and Blue Angel environmental requirements.

Applications

• Areas with increased fire risk, such as steel mills, metallurgical plants and underground mining
• Hydraulic and oil-circulation systems operating in conditions with a fire hazard or in environmentally sensitive areas
• Continuous casters
• Blast furnaces
• Reheating furnaces
• Underground and open-pit mining
• Tunnelling
• Forestry equipment
• Construction equipment

Performance & benefits

• Excellent thermal and oxidation stability, helping reduce maintenance downtime and costs through system cleanliness and reduced deposits
• Contributes to long oil and filter life
• Outstanding anti-corrosion and anti-wear properties, protecting components against wear and scuffing for long equipment life
• Wide range of operation, thanks to good low-temperature characteristics
• Meets the requirements of the EU Ecolabel and Blue Angel