A survey of publications concerning the relationship between the arsenic content of brass and special brass heat exchanger tubes and their susceptibility to intergranular corrosion and stress corrosion has been made to establish whether there are grounds for reducing the maximum below the 0·06% specified in most National Standards.
It appears that reducing the arsenic contentfrom 0·06% to 0·03% would have no effect on intergranular corrosion and only a marginal effect on stress corrosion susceptibility. No change in the Standards is considered desirable.
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