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3M AC-350 Class B-4 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 B-4 Aerospace Sealant.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

3M Aerospace Sealant AC-350 Class B are fast-cure, intermediate density polysulfide sealant suitable fro fuel tank and fuselage applications. These two-component, manganese dioxide cured sealant are solvent free and have resistance to aviation gasoline and jet fuel, as well as resistance to chemicals and petroleum products common to the aircraft industry. 3M AC-350 Class B Sealants maintain flexibility and bond strength on most metal substrates such as aluminum, titanium, steel, stainless steel, glass, and many coatings under extremes of temperature, weathering and stress. The mixed compound is a thixotropic paste easily applied by extrusion, injection gun or spatula, and 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	2.0 %	2.0 %
Brookfield Viscosity	900000 - 1.20e+6 cP	900000 - 1.20e+6 cP	Base, RVF #7 sp @ 2 rpm

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	50 - 55	50 - 55	cured 14 days @ 50% RH
Tensile Strength at Break	1.51 MPa	219 psi	Standard Heat cycle + JRF-12 days @ 60°C, 60 hrs @ 71°C, 6 hrs @ 82°C + 24 hrs at 49°C
	1.65 MPa	239 psi	24 hrs @ 121°C, and JRF-7 days @ 60°C
	1.79 MPa	260 psi	Standard Cure-14 days
	1.38 MPa @Temperature 60.0 °C	200 psi @Temperature 140 °F	JRF-14 days
	2.28 MPa @Temperature 182 °C, Time 28800 sec	331 psi @Temperature 360 °F, Time 8.00 hour
	2.55 MPa @Temperature 121 °C, Time 605000 sec	370 psi @Temperature 250 °F, Time 168 hour
Elongation at Break	42 %	42 %	Standard Heat cycle + JRF-12 days @ 60°C, 60 hrs @ 71°C, 6 hrs @ 82°C + 24 hrs at 49°C
	260 %	260 %	24 hrs @ 121°C, and JRF-7 days @ 60°C
	500 %	500 %	Standard Cure-14 days
	540 % @Temperature 60.0 °C	540 % @Temperature 140 °F	JRF-14 days
	100 % @Temperature 182 °C, Time 28800 sec	100 % @Temperature 360 °F, Time 8.00 hour
	125 % @Temperature 121 °C, Time 605000 sec	125 % @Temperature 250 °F, Time 168 hour

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	1920 - 2160 min	32.0 - 36.0 hour
	1920 - 2160 min	32.0 - 36.0 hour	Tack-Free Time
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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