HYDRAUNYCOIL FH 42
HYDRAUNYCOIL FH 42
Hydraunycoil FH 42 is a synthetic hydraulic fluid formulated with PAO and esters, featuring a viscosity of 7 cSt at 40°C. It is engineered to function effectively within a temperature range of -54°C to +200°C, maintaining stability without significant evaporation or viscosity changes. This fluid is suitable for use in aircraft and missile hydraulic systems, including those previously using H-537 or H-515 fluids.
Applications
- Actuators and flap-control mechanisms in military and commercial aircraft
- Landing gear shock struts
- Helicopter and military hydraulic systems
- Hydraulic servo-controlled systems in missiles
Specifications and Characteristics
- Density at 20°C: 0.834 (ASTM D4052)
- Appearance: Limpid red oil
- Kinematic Viscosity: 0.87 mm²/s at 200°C, 2.10 mm²/s at 100°C, 6.75 mm²/s at 40°C, 483 mm²/s at -40°C, 2286 mm²/s at -54°C (ASTM D445)
- Low Temperature Stability: Passes without gelling or separation (FED-STD-791-3458)
- Flash Point: 172°C (ASTM D92)
- Fire Point: 188°C (ASTM D92)
- Auto-ignition Temperature: 345°C (ASTM E659)
- Pour Point: -69°C (ASTM D97)
- Total Acid Number: 0.03 mg KOH/g (ASTM D664)
- Evaporation Loss: 10.0% at 135°C (ASTM D972)
- Foaming Test: 25/0 cm³/cm³ at 24°C (ASTM D892)
- Steel on Steel Wear: Scar diameter of 0.10 mm at 9.8 N, 0.24 mm at 98 N, 0.53 mm at 392 N (ASTM D4172)
- Solid Particles Content: Various sizes with limits as per NAS 1638 and SAE AS4059
- Elastomer NBR-L Compatibility: 22% volume change (ASTM D4289)
- Water Content: 57 mg/kg (ASTM D6304)
Notes
The values provided are typical and do not constitute a contractual commitment. Sales specifications are available upon request. This technical data sheet supersedes previous editions.
Catalog excerpts
NYCO HYDRAUNYCOIL FH 42 LOW TEMPERATURE SYNTHETIC HYDRAULIC FLUID NATO CODE H-538 MIL-PRF-87257C - OX-538 AIRBUS CML 02EBA1I Hydraunycoil FH 42 is a synthetic hydraulic fluid based on PAO and esters with a viscosity of 7 cSt at 40°C. It is designed to operate in the temperature range - 54°C to + 200°C without air intake for a long period of time without significant evaporation or change in viscosity. Hydraunycoil FH 42 is the latest generation of hydraulic fluids for aircraft (A380) and missiles. It prevents component wear and seizure over a large temperature range. It can be used in hydraulic systems previously operated with H-537 (MIL-PRF-83282) or • Actuators and flap-control mechanisms of military and commercial aircrafts • Landing gear shock strut of military and commercial aircrafts • Helicopter and military hydraulic systems • Hydraulic servo-controlled systems of missiles
Open the catalog to page 1
The values above are typical values. They do not constitute any contractual commitment. Sales specifications are available on request. The present technical data sheet replaces all the previous editions.
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