Today we want to talk about standard ISO 3506 – 2009, especially in regards to carbon found in austenitic A4 stainless steel.
Standard DIN EN ISO 3506-1:2009
Below is the Table 1, where the chemical compositions of all groups of steel are explained. What we will consider today is the austenitic A4 ones. Here we can observe the degree of carbon contained in this type of steel is 0.08.
In addition the Table 1 – point “g”, in the Table B1 is explained that for steel with ferritic-austenitic structure, the maximum carbon content is 0.03.
Table 1 – point “i”
How can a manufacturer add the 0.008% carbon by ensuring that the material produced remains under?
In the precedent table it is specified that “at the discretion of the manufacturer, the carbon content may be higher where required in order to obtain the specified mechanical properties at larger diameters, but shall not exceed 0,12% for austenitic steels.”
Therefore, the manufacturer can add the 0.008% on 16 mm in diameter (bar 2 mt).
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Nice Blog!!!
Thank you for sharing this blog it is really interesting to know about ISO 3506.