Material Analysis
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ASA environmental stress cracking assessment missing
Problembeschreibung
ASA products crack in batches in specific chemical environments, environmental stress cracking assessment was not done at the material selection stage, and post-remediation costs are high.
Ursachenanalyse
Although ASA has better environmental stress cracking resistance than PC, it is still sensitive to specific solvents and hydrocarbons; material selection relied only on general chemical resistance tables without actual medium immersion verification; stress level and medium jointly determine cracking time.
Lösung
①Perform immersion stress cracking tests with actual contact media at the material selection stage; ②solidify low-stress process for products; ③establish a prohibited chemical list and train the site; ④perform medium traceability analysis on cracked parts.
Wichtigste Erkenntnis
The environmental stress cracking risk of ASA must be assessed by actual testing; general data from chemical resistance tables cannot replace working condition verification; on-site chemical management is a long-term line of defense.
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