Hydraunycoil FH 51

Hydraunycoil FH 51 oil is designed for hydraulic systems of aviation and ground equipment operating in the ambient temperature range of -60 to 55°C. It is produced based on a deeply dearomatized low-freezing fraction obtained from hydrocracking of paraffinic oils and consisting of naphthenic and isoparaffinic hydrocarbons. It contains thickening and antioxidant additives, as well as a distinctive organic dye.

It is approved for use in hydraulic systems and landing gear of airplanes and helicopters, as well as for dampers, reactive hydraulic systems, and reducers.

The hydraulic fluid Hydraunycoil FH-51 (FH-51), produced by the company NYCO (France), is a physicochemical, technical, and operational analog of the hydraulic fluid AMG-10 according to GOST 6794.

Technical characteristics of the Hydronikoyl FH-51 oil

Indicator Methods Norm
Appearance Visual Transparent, red
Density at +20°C, kg/m3 GOST 3900
ASTM D4052		 -
Kinematic viscosity, at:
at +100 °C, minimum
at +40 °C, minimum
at -40 °C, maximum
at -50 °C, maximum		 ASTM D 445
GOST 33		 5.00
13.00
500
3000
Pour point, °C, maximum GOST 20287
ASTM D 97		 -60
Flash point, determined in a closed crucible, °C, minimum GOST 4333
ASTM D 93		 82
Acid number, mg KOH per 1 g of oil, maximum GOST 5985*
ASTM D 664		 0.20
Corrosion test (Cu), maximum GOST 2917
ASTM D 130		 2e
Oxidation - corrosion at +135 °C for 168 hours:
change in acid number, mg KOH/g
change in viscosity at +40 °C, % change in mass of metals, mg/cm2
steel
magnesium
aluminum
cadmium
copper
sediments, mg/100 cm3		 ASTM D 4636 maximum +/-0.20
from -5 to +20, maximum +/-0.2
maximum +/-0.2
maximum +/-0.2
maximum +/-0.2
maximum +/-0.6
absence
Water content, PPM MO-10-001A maximum 100
Number of particles in 100 cm3
from 5 to 15 µm
from 16 to 25 µm
from 26 to 50 µm
from 51 to 100 µm
from 101 to 150 µm		 HIAC макс. 10000
max. 1000
max. 150
max. 20
max. 5