copper to aluminum

By jwright650 (*****)

Date 04-23-2004 15:44

using flux or flux coated rods? or both?
John Wright

By jwright650 (*****)

Date 04-23-2004 15:46

http://www.jwharris.com/jwref/chart/
[scroll down to the aluminum to copper] also see note#4
Hope this chart helps,
John Wright

By bayouweld (*)

Date 04-23-2004 16:59

using flux, thanks for the website, appreciate it

By HAZ Date 09-23-2004 10:42

Solutions for Cu Al brazing
1 4047 filler metal plus non corrosive flux
Adv : costs
Disadv : brittle joint
2 Zn Al filler metal, non corrosive flux, reducing flame
Adv : 200°C of working range
Disadv : corrosion problem spec. in automotive, costs
3 : Al-stainless steel-Cu

Normally in fitting joints, the base material with the higer thermal expansion is outside but in this way in some case is very difficult to reach the wetting temp. of the base material inside.
Bye
Paolo

By harleyhitman (**)

Date 01-23-2005 01:41

Here's your product.

“THE WONDER ALLOY”
A uniquely versatile very low heat alloy that joins white and pot metals with ease. Particularly suited for
soldering all types of dissimilar metals i.e.: copper to aluminum, brass to steel, zinc to stainless etc…
IDENTIFICATION: Silver Colored Soft Wire
APPLICATION: Torch or Soldering Iron
CRONABRAZE 53 SUPERIOR ADVANTAGES:
• TOTALLY LEAD AND CADMIUM FREE
• EXTREMELY LOW MELTING POINT
• MORE THAN TWICE THE STRENGTH OF ORDINARY SOLDER
• THIN FLOWING, SAFE AND NON TOXIC
TECHNICAL INFORMATION:
TENSILE STRENGTH: 17,500 PSI (121 MPa)
TEMPERATURE: 360°F (182°C)
OPERATING PROCEDURES:
Base metal must supply heat as a direct flame is unworkable. A carburizing flame should be used.
Flux is required for all applications where good bondability is desired.
APPLICATIONS:
• CHROME PLATED ZINC DIE CASTINGS
• AIR CONDITIONING AND REFRIGERATION UNITS
• DISSIMILAR METALS SOLDERING
• HEATERS, RADIATORS AND EXCHANGERS
• ALUMINUM TO COPPER TUBING
CRONASOLV ™ F53 flux is required
for all applications
CONFIDENTIAL MATERIAL, REPRODUCTION, IN WHOLE OR IN PART, PROHIBITED Printed in U. S. A. (Rev. 7/ 00)
PART NO.
CW1842
CW1017
SIZE
1/16 Spooled
1/8 x 18
WE 9 Corporate, Research & Distribution Headquarters: 6510 Northpark Blvd., Charlotte, North Carolina 28216-2367 / 800-843-0763
TECHNICAL INFORMATION
CRONATRON WELDING SYSTEMS, INC.
CRONABRAZE ™ 53
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