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Specific Gravity: A - 1.4 Shelf Life: A: > 1 year at < 40°F
B - 1.0 B: 1 year at < 60°F
Mix - 1.3
Viscosity: 6388-3 = Paste ANSI Classification A: 4 B: 4
6388-5 = 350 poise
Mix Ratio: 100 parts by weight A Flash Point: A: >200°F B: >200°F
26 parts by weight B
Pot Life: 53 minutes Cure Schedule: 1 hour @ 260°F or
7 days @ 75°F
*Shelf Life Note: 6388-3 has improved room temperature storage life
over other highly reactive adhesives. Tests have shown that 6388-3
will meet all requirements of FMS 1048E after 1 year at <40°F. .
Rate of Cure
Rate of cure is judged by development of lap shear strength using
precut test specimens. Small differences in room temperature will
affect cure rate and pot life. Results at 75°F are as follows:
Elapsed time after Lap Shear
mixing, hours PSI
------------------- ---------
4 440
5 1350
6 2150
7 2850
8 2950
9 3000
Peak Exotherm and Pot Life, 3 oz. Mass
Pot Life: 53 minutes
Peak Exotherm °F: 440
Lap Shear Strength per FMS 1048E
Cure Schedule = 1 hour at 260°F
Test Temperature Strength, PSI 1048E Requirement, PSI
---------------- ------------- ----------------------
-67°F 3,100 1,800
73°F 3,200 2,200
180°F 2,800 2,000
270°F 2,300 1,500
300°F 2,000 -
350°F 900 -
400°F 600 -
Cure Schedule = 7 days at 75°F
Test Temperature Strength, PSI 1048E Requirement, PSI
---------------- ------------- ----------------------
73°F 3,000 2,500
**180°F 1,400 600
**200°F 1,800 600
** Loaded to 600 psi at 75°F and heated to indicated temperature at
the rate used by General Dynamics.
Water Resistance, Lap Shear Strength
After Water Soak at 75°F
Days In Water PSI
------------- -------
0 3300
30 3700
60 3700
120 3700
488 4100
730 4500
2300 3600
Chemical resistance tests were run per FMS 1048E and MS 277. Coupons
(not panels) were immersed for seven days.
Average
Test Temperature Stress, PSI
---------------- -----------
TT-S-735, Type I -65°F 2,898
75°F 3,522
180°F 3,053
TT-S-735, Type II -65°F 4,123
75°F 4,318
180°F 3,776
TT-S-735, Type III -65°F 4,381
75°F 3,994
180°F 3,801
TT-S-735, Type IV -65°F 3,510
75°F 3,882
180°F 3,330
TT-S-735, Type V -65°F 4,156
75°F 4,252
180°F 4,202
TT-S-735, Type VI -65°F 3,591
75°F 4,350
180°F 4,161
TT-S-735, Type VII -65°F 4,302
75°F 4,079
180°F 4,045
Water (30 day immersion) -65°F 3,422
75°F 3,700
180°F 3,686
Hydraulic Oil -65°F 3,963
75°F 3,630
180°F 3,485
Jet Fuel -65°F 4,351
75°F 3,778
180°F 3,713
DOUBLE LAP SHEAR STRENGTH, ASTM D-3528 PRIMED ALUMINUM PANELS
TEST TEMPERATURE STRESS, PSI
---------------- -----------
75°F 3,300
350°F 1,450
400°F 900
440°F 750
Cure schedule: 7 days at 75°F. The coupons are heated quickly (3
minutes) to the test temperature to avoid additional cure.
THERMAL CONDUCTIVITY, ASTM D2214
cal cm/sec cm2 °C 4.6 x 10-4
COMPRESSIVE STRENGTH, ASTM D-695
Room Temperature Cure 13,800 psi
Heat Cure, 1 hour at 260°F 15,500 psi
FATIGUE STRENGTH, MMM-A-132
106 cycles 1,500 psi
107 cycles 1,250 psi
CREEP RUPTURE, MMM-A-132
STRESS DEFORMATION, INCH
1600 psi at 75°F 0.0030
800 psi at 180°F 0.0015
Fiberglass to Fiberglass
Corrosive Resistant Epoxy Exposure to 2pH Sulfuric Acid
Exposure (# days) 6388-5A/6B 101-093 101-094
0 1760 1720 1800
264 1720 1740 1780
Note: All specimens were sandblasted prior to bonding. The specimens
were then cured 1 hour @ 200°F.
DANGER FIRST-AID
-------------------------------- -------------------------
May cause severe irritation. Eyes - Immediately flush
Do not get in eyes, on skin eyes with plenty of water
or clothing. for at least 15 minutes.
Do not inhale vapors. Get medical attention.
Wear rubber gloves & aprons. Skin - Wash immediately
Use with adequate ventilation. with soap and water.
Wash thoroughly after handling. Clothing - Remove clothing
For industrial use only. and wash before reuse.
Keep container closed.
Do not reuse this container.
Sales Division Magnolia Plastics, Inc. 5547 Peachtree Industrial Boulevard Chamblee, GA 30341-2296 USA 770-451-2777, Voice 770-451-5376, FAX 800-831-8031, Voice Email: sales@magnapoxy.com
