Dip Brazing Fact Sheet

Military Specification
MIL-B-7883
MIL-STD 645

Brazing Temperatures
Pre-heating - Approximately
1000°F
Salt Bath Immersion -Approximately
1100°F
In compliance with the latest environmental codes, individual components are chemically cleaned of all oxidization and other contaminants.


Brazeable Aluminum Alloys

Alloy

Brazeability Rating

Heat Treatable
Yes      No
6061
A Good
X
-
6063
A Good
X
-
6951
A Good
X
-
1100
A Good
-
X
3003
A Good
-
X
7072
A Good
-
X
3004
B Fair
-
X
7005
B Fair
X
-
5052
C Poor
-
X
6151
C Poor
X
-

Due to the custom nature and complexity of our customer requirements, skilled technicians pre-assemble the components prior to dip brazing.






ALL ALLOYS NOT LISTED ABOVE ARE
CONSIDERED NON-BRAZEABLE.


Brazing alloys are available in sheet form, powder form, rod form and clad sheet.

NOTE: The tack welding alloy recommended for aluminum dip brazing is type 1100.

Brazeable Casting Alloys (MIL-C-11866 SPECS)

Alloy

Brazeability Rating
C 712
A Good
D 712
A Good
A 712
B Fair


Precision controls for our pre-heat ovens and the Upton Electric Brazing Furnace provide accuracies of ±4°F of set points. Operating temperatures are continuously chart recorded.



*Nominal Joint Clearances
.0015 - .003 Per Side
.003 - .006 On Widths and Diameters

* These tolerances are recommended for proper capillary action and uniform brazed joints.

 

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A final quality control check for mechanical dimensions and brazing integrity is verified through stringent Q.C. inspection procedures.

Contact us, we can answer all your Aero brazing questions.

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Aero Brazing Corporation

223 New Boston Street
Woburn, Massachusetts 01801

(781) 933-7511