MIL-PRF-27617G
TABLE I. Chemical and Physical Requirements.
REQUIREMENTS
TYPE I
TYPE II
TYPE III
TYPE IV
TYPE V
Unworked penetration
290 min
200 min
200 min
225 min
260-310
Worked penetration
290-340
265-310
265-310
235-310
270-300
1/
1/
1/
1/
1/
Corrosion on copper (max)
2b
2b
2b
2b
2e
2/
2/
2/
2/
3/
High temperature bearing performance
500 hours
500 hours
500 hours
500 hours
600 hours
4/
5/
5/
5/
6/
Evaporation, percent (max)
25.0
15.0
12.0
15.0
3.0
Oil separation at 204°C (400°F) 30
-
15
20
20
12
hours percent (max)
Antiwear, scar diameter mm
(maximum) 40 Kg load
52100, 75°C (167°F)
-
-
-
1.0
1.25
52100, 204°C (400°F)
-
-
-
1.3
3.0
Extreme pressure weld, Kg (min)
-
-
-
500
600
Solubility in fuel, percent (max)
-
20
20
20
-
Liquid oxygen impact sensitivity 20
No reaction
No reaction No reaction No reaction No reaction
impacts at 1100 mm (43.3 inches)
Water washout characteristics
-
20% max
-
-
-
Oxidation stability - pressure drop,
psi (max)
-
5
-
-
-
Low temperature torque gm-cm at
Start 800
-62°C (-80°F) (max)
-
-
-
Run 300
-
Low temperature torque gm-cm at
Start 2800
Start 3000
-73°C (-100°F) (max)
-
-
-
Run 800
Run 2000
Molybdenum disulfide content, % (min)
-
-
-
-
5.0
Dirt count
25-74 micron diameter, max
1000
1000
1000
1000
1000
75 micron diameter and over
0
0
0
0
0
Notes:
1/ ASTM D130 rating, no pitting or etching under minimum 30 × magnification
2/ 10,000 revolutions per minute at 204°C (400°F)
3/ 10,000 revolutions per minute at 232°C (450°F)
4/ Test conditions: 22 hours at 149°C (300°F)
5/ Test conditions: 22 hours at 204°C (400°F)
6/ Test conditions: 72 hours at 232°C (450°F)
TABLE II. Penetration requirements.
REQUIREMENTS
TYPE
TYPE
TYPE
TYPE
TYPE
I
II
III
IV
V
Unworked penetration (min)
290
200
200
225
280
Change in worked penetration (units max)
30
30
30
30
30
5
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