20/30370908 DC

This standard 20/30370908 DC BS ISO 4968. Steel. Macrographic examination by sulfur print (Baumann method) is classified in these ICS categories:

• 77.040.99 Other methods of testing of metals

This International Standard specifies a method (Baumann) for the macrographic examination of steel by means of contact printing using silver salts and acid.

The method is applicable to steels of which the sulphur content is less than 0,40%. This method may also be applied to cast irons.