Wrought Aluminium

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Grade 4xxx Alloys

Composition

The principle alloying element in Grade 4xxx is Silicon, accounting for up to 21.5% of these alloys by weight. Additional alloying elements include; ≤5.4 Iron, ≤5.0 Copper, ≤2.2 Nickel, ≤2.0 Magnesium, ≤2.0 Bismuth, ≤1.5 Manganese, ≤1.3 Zinc, ≤0.25 Chromium, ≤0.2 Titanium, ≤0.03 Lead, ≤0.01 Zirconium & ≤0.005 Boron

Characteristics

  • Generally used in welding rods and other joining methods

Weldability

Grade 4xxx alloys are well suited to use in welding rods and brazing sheets.

Common Forms

4xxx Series Alloys are commonly available in

  • Welding rods

  • Brazing sheets

  • Rolled and Cold Finished Rods and Wire

(Not all alloys or tempers available in all shapes)

Uses

  • Welding rods

  • Rivets

Machinability

Grade 4xxx Alloys may be machined, but aren't best suited to forming in this way. 

Commonly Used Alloys (AA)

4004 | 4104 | 4006 | 4007 | 4008 | 4009 | 4010

4013 | 4014 | 4015(A) | 4115 | 4016 | 4017

4018 | 4019 | 4020 | 4021 | 4026 | 4032

4043(A) | 4143 | 4343 | 4643 | 4943 | 4044

4045 | 4145(A) | 4046 | 4047(A) | 4147

Commonly Used Alloys (UNS)

A94004 | A94104 | A94006 | A94007 | A94008

A94009 | A94010 | A94013 | A94014

A94015(A) | A94115 | A94016 | A94017

A94018 | A94019 | A94020 | A94021 | A94026

A94032 | A94043(A) | A94143 | A94343

A94643 | A94943 | A94044 | A94045

A94145(A) | A94046 | A94047(A) | A94147 

 
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