ISO 4968:1979 Preview
Steel -- Macrographic examination by sulfur print (Baumann method)
This standard was last reviewed and confirmed in 2016. Therefore this version remains current.
The Baumann method uses contact printing using silver salts and sulphuric acid. It is applicable to non-alloy and alloy steels and to cast irons of which the sulphur content is less than 0.1 %. Specifies general, principle, products and reagents, test pieces, procedure and test report.
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