Some Considerations in the Welding of Chemical Equipment in Aluminium-Magnesium Alloys

Chemical equipment is fabricated in aluminium and aluminium alloys in view of their following characteristics :-

(i) Good resistance to corrosion. The welded joints normally have approximately the same resistance to chemical action as the parent material.

(ii) Aluminium is generally non-contaminating.

(iii) Aluminium-Magnesium alloys are ductile even at sub-zero temperatures. They are therefore used for low-temperature applications, like the storage and transport of liquefied gases.

(iv) Light weight.

(v) Non-sparking properties.

(vi) Low resistance to heat flow.