Outokumpuâs newest additions to its product portfolio, the high-chromium austenitic EN 1.4420 and high-chromium ferritic EN 1.4622 have recently been accepted into European EN 10028-7 standard (Flat products made of steels for pressure purposes â Part 7: Stainless steels) on July 13, 2016. Both of the grades are suitable for various end-uses. Austenitic Supra 316plus is alternative to EN 1.4404 (316L). The higher corrosion resistance and strength make it appealing for tank manufacturers, heat exchangers, tube producers in process and heavy industry. Core 4622 is ferritic alternative to EN 1.4307 (304L) for various appliances. The grade thrives especially in applications that require deep-drawing. Outokumpu refers to EN 1.4622 as Core 4622 and to EN 1.4420 as Supra 316plus, which is Outokumpuâs registered trademark.
Says Product Manager Juha Kela: âWe are pleased about getting these two new Outokumpu stainless steel grades into European EN standard. While it is a big milestone for us, the real benefit goes to our customers. Supra 316plus has been successfully used for example in Langh Groupâs pressure vessel for corrosive chemicals, but without EN standardization, the Particular Material Appraisal (PMA) process was required to prove that the grade is sufficient for the purpose.â?