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3M AC-350 Class C-1/2 Aerospace Sealant

Category Polymer , Thermoset
Manufacturer 3M
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF 3M AC-350 Class C-1/2 Aerospace Sealant.pdf
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Material Notes:
3M Aerospace Sealant AC-350 Class C are fast-cure, intermediate density polysulfide sealant suitable fro fuel tank and fuselage applications. These two-component, manganese dioxide cured sealant have resistance to aviation gasoline and jet fuel, as well as resistance to chemicals and petroleum products common to other aircraft industry. 3M AC-350 Class C Sealants maintain flexibility and bond strength on most metal substrates such as aluminum, titanium, steel, stainless steel, and many coatings under extremes of temperature, weathering and stress. The mixed compound is a flowable, faying surface grade material easily applied by brush, roller, spatula, or extrusion gun. The sealant exhibits good tooling properties.Information provided by 3M
Physical Properties Metric English Comments
Density <= 1.40 g/cc
<= 0.0506 lb/in³
cured 14 days @ 50% RH
Volatiles 5.0 %
5.0 %
Brookfield Viscosity 200000 - 350000 cP
200000 - 350000 cP
Base, RVF #7 sp @ 2 rpm
Mechanical Properties Metric English Comments
Hardness, Shore A 50 - 55
50 - 55
cured 14 days @ 50% RH
Shear Strength 1.65 MPa

@Time 1.21e+6 sec
 240 psi

@Time 336 hour
 Graphite Bismaleimide (BMI) composite IM7/5250-4
1.86 MPa

@Time 346000 sec
 270 psi

@Time 96.0 hour
 AMS4911 Titanium
Peel Strength 6.49 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 37.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF, Graphite/BMI
6.66 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 38.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF, MIL-C-27725
6.84 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 39.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF/SW, Graphite/BMI
7.19 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 41.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF, MIL-C-5541
7.36 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 42.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF/SW, MIL-C-27725
7.36 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 42.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF/SW, MIL-PRF-85582
7.89 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 45.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF/SW, MIL-C-5541
7.89 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 45.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF, AMS 4911 Titanium
7.89 kN/m

@Temperature 60.0 °C,
Time 6.05e+6 sec
 45.0 pli

@Temperature 140 °F,
Time 1680 hour
 in JRF/SW, AMS 4911 Titanium
7.89 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 45.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF, MIL-PRF-85582
8.24 kN/m

@Temperature 60.0 °C,
Time 605000 sec
 47.0 pli

@Temperature 140 °F,
Time 168 hour
 in JRF/SW, AMS 4911 Titanium
9.99 kN/m

@Temperature 60.0 °C,
Time 6.05e+6 sec
 57.0 pli

@Temperature 140 °F,
Time 1680 hour
 in JRF, AMS 4911 Titanium
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 121 °C
250 °F
cured 14 days @ 50% RH
182 °C
360 °F
Short term, cured 14 days @ 50% RH
Minimum Service Temperature, Air -54.0 °C
-65.2 °F
cured 14 days @ 50% RH
Processing Properties Metric English Comments
Cure Time 120 - 180 min
2.00 - 3.00 hour
Tack-Free Time
120 - 180 min
2.00 - 3.00 hour
Shelf Life 9.00 Month

@Temperature <=26.7 °C
 9.00 Month

@Temperature <=80.1 °F
Descriptive Properties Value Comments
Appearance Brown
Accelerator
Dark Gray
Off White
Base
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