H-515

Def Stan 91-48
(OM-15)
MIL-H-5606
AIR 3520

HYDRAUNYCOIL FH 51

PETROLEUM HYDRAULIC FLUID

HYDRAUNYCOIL FH 51 is a petroleum fluid for use in the - 54oC to + 135oC temperature range in air-tight circuits and in the - 54oC to + 90oC temperatu­re range in open circuits. It is used on shock absorbers, missile hydraulic systems, braking systems, etc. HYDRAUNYCOIL FH 51 is microfiltered.


Main characteristics

Properties Units Results Limits Methods
Appearance - conform Clear limpid, red visual examination
Color — conform Conform to the —
      reference  
Density at 20oC kg/dm3  0.872 report ASTM D 4052
Kinematic viscosity at       ASTM D 445
100oC mnrVs 5.36 min 4.90  
40oC   13.9 min 13.2  
-40oC   413 max 600  
-54oC   1839 max 2500  
Stability 72h at -54oC - conform MIL-H-5606 FTM-S-791-3459
Pour point oC -66 max -60 ASTM D 97
Evaporation loss       ASTM D 972
6h at 71oC %weight 14.4 max 20.0  
Flash point oC 96 min 82 ASTM D 93
Acid number(pH=l 1) mg KOH/g 0.02 max 0.20 ASTM D 664
Copper corrosion       ASTMD 130
72h at 135oC - 2a max 2e  
Water content mg/kg 55 max 100 ÌÎ-10-001 À
Steel-on-steel wear mm 0.7 max 1.0 ASTMD 4172
Foaming test at 24oC Tendency Stability (after 10min) cm3  45.0 max 65.0 ASTM D 892