Industrial fluid handling requires precise material selection to prevent catastrophic leaks, contamination, or equipment failure. When evaluating material resistance, the chemical compatibility of Nitric Acid (20%) with Stainless Steel is officially rated as ‘A-Excellent’.
This compatibility rating is critical for engineers designing pipelines, selecting O-ring seals, or purchasing bulk storage tanks. Exposing Stainless Steel components to Nitric Acid (20%) carries a specific material reaction profile. If the rating is categorized as ‘Excellent’ or ‘Good’, the material generally exhibits minimal swelling, softening, or embrittlement over time. Conversely, ‘Fair’ or ‘Severe Effect’ ratings indicate rapid chemical attack, meaning Stainless Steel should be immediately avoided in favor of more resistant polymers or alloys.
Always verify operating temperatures and concentration limits before deploying Stainless Steel in an active industrial environment containing Nitric Acid (20%).