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What is the safe limit for ammonia in contact with brass to prevent stress corrosion cracking?

April 26, 2017ammonia Brass contact Corrosion cracking limit safe stress

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What is the safe limit for ammonia in contact with brass to prevent stress corrosion cracking?

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A There is no acceptable limit – it is essential that internal stresses are removed as far as possible by a stress relief anneal at 250-350oC for 1/2 to 1 hour.