AWS D1.2 Basic Etchant, 500 mL



This standard formula is listed in AWS welding code D1.2/D1.2M annex as the “Basic Etchant.” It is specifically recommended for macro-etching aluminum weldments. The term ‘Basic’ denotes its non-acidic nature. We tested this mixture on 3003, 5052, 5085, 5456, 6061, and 6063 aluminum welds, it demonstrated fast and effective results as suggested by AWS. Please review our test results here. Made with reagent-grade chemicals to ensure precision and reliability.


User Instructions:

  • Sand the cross-section of the weld to a uniform 600-grit finish, at a minimum, before etching. Mirror polish the surface if possible. The finer the finish, the more details you will see.
  • Apply this chemical with cotton swabs. Allow it to stand for a few seconds to minutes.
  • Once the weld is visible, rinse it with water to stop the reaction.
  • Heat this solution to 120°F/50°C is optional but can enhance its effectiveness.
  • Shelf life is one year.


Nalgene® Leakproof Bottle, HDPE.

Additional information

Weight 1.5 lbs
Dimensions 4.4 × 3.5 × 6.5 in
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