BS EN ISO 3887:2018,Steels – Determination of the depth of decarburization.The size of this pdf file is 2.57M.
BS EN ISO 3887:2018 defines the decarburization and specifies three methods of measuring the depth of decarburization of steel products.
Thisthird edition cancels and replaces the second edition (ISO 3887: 2003),which has been technically revised. The following changes have been made:
– the scope has been expanded from”non-alloy and low-alloy steels””steel products”，
– the definitions of”partial decarburization” and”complete decarburization”have been modified;
– the term”depth of ferrite decarburization”has been deleted；
– the terms”depth profile of carbon content ” and”depth profile of hardness”have been added；
– more measurement details for the micro-indentation hardness method have been added；
–  two new methods of measuring the carbon depth profile, by GDOES and EPMA, have been added；
– examples of typical decarburization microstructures have been added.
Samples should be taken at locations that are representative of the bulk specimen. The location and number of samples taken depend on the nature of the material to be tested and are defined by agreement between the parties concerned.
The choice of the method and its accuracy depend on the degree of decarburization, the microstructure
the carbon content of the product examined and the shape of the component.