Aluminum alloy welding wire
First Claim
1. An Al—
- Si—
Mg welding filler metal consisting of;
5.0 to 6.0 wt % silicon;
0.41 to 0.5 wt % magnesium;
0.05 to 0.3 wt % copper;
0.2 to 0.8 wt % iron; and
the balance being aluminum and trace elements,wherein the trace elements consist of;
a maximum allowable amount of manganese of 0.05 wt %;
a maximum allowable amount of zinc of 0.2 wt %;
a maximum allowable amount of titanium of 0.2 wt %;
a maximum allowable amount of beryllium of 0.0003 wt %; and
other trace elements are allowable in a maximum weight percent of 0.05% each, the other trace elements together being allowable in a maximum weight percent of 0.15% total; and
wherein the Al—
Si—
Mg welding filler metal is a welding filler metal rod or wire for alloying with a base metal of a workpiece to produce a weld.
2 Assignments
0 Petitions
Accused Products
Abstract
A composition for welding or brazing aluminum comprises silicon (Si) and magnesium (Mg) along with aluminum in an alloy suitable for use in welding and brazing. The Si content may vary between approximately 5.0 and 6.0 wt %, and the Mg content may vary between approximately 0.15 wt % and 0.50 wt %. The alloy is well suited for operations in which little or no dilution from the base metal affects the Si and/or Mg content of the filler metal. The Si content promotes fluidity and avoids stress concentrations and cracking. The Mg content provides enhanced strength. Resulting joints may have a strength at least equal to that of the base metal with little or no dilution (e.g., draw of Mg). The joints may be both heat treated and artificially aged or naturally aged.
65 Citations
20 Claims
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1. An Al—
- Si—
Mg welding filler metal consisting of;5.0 to 6.0 wt % silicon; 0.41 to 0.5 wt % magnesium; 0.05 to 0.3 wt % copper; 0.2 to 0.8 wt % iron; and the balance being aluminum and trace elements, wherein the trace elements consist of; a maximum allowable amount of manganese of 0.05 wt %; a maximum allowable amount of zinc of 0.2 wt %; a maximum allowable amount of titanium of 0.2 wt %; a maximum allowable amount of beryllium of 0.0003 wt %; and other trace elements are allowable in a maximum weight percent of 0.05% each, the other trace elements together being allowable in a maximum weight percent of 0.15% total; and wherein the Al—
Si—
Mg welding filler metal is a welding filler metal rod or wire for alloying with a base metal of a workpiece to produce a weld. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 18)
- Si—
-
13. An Al—
- Si—
Mg welding filler metal consisting of;5.0 to 6.0 wt % silicon; 0.41 to 0.5 wt % magnesium; 0.05 to 0.3 wt % copper; 0.2 to 0.8 wt % iron; 0.05 to 0.2 wt % zinc; and the balance being aluminum and trace elements, wherein the trace elements consist of; a maximum allowable amount of manganese of 0.05 wt %; a maximum allowable amount of titanium of 0.2 wt %; a maximum allowable amount of beryllium of 0.0003 wt %; and other trace elements are allowable in a maximum weight percent of 0.05% each, the other trace elements together being allowable in a maximum weight percent of 0.15% total; and wherein the Al—
Si—
Mg welding filler metal is a welding filler metal rod or wire for alloying with a base metal of a workpiece to produce a weld. - View Dependent Claims (14, 15, 19)
- Si—
-
16. An Al—
- Si—
Mg welding filler metal consisting of;5.2 to 5.8 wt % silicon; 0.41 to 0.5 wt % magnesium; 0.05 to 0.3 wt % copper; 0.2 to 0.8 wt % iron; and the balance being aluminum and trace elements, wherein the trace elements consist of; a maximum allowable amount of manganese of 0.05 wt %; a maximum allowable amount of zinc of 0.2 wt %; a maximum allowable amount of titanium of 0.2 wt %; a maximum allowable amount of beryllium of 0.0003 wt %; and other trace elements are allowable in a maximum weight percent of 0.05% each, the other trace elements together being allowable in a maximum weight percent of 0.15% total; and wherein the Al—
Si—
Mg welding filler metal is a welding filler metal rod or wire for alloying with a base metal of a workpiece to produce a weld. - View Dependent Claims (17, 20)
- Si—
Specification