OUTOKUMPU OYJ
PRESS RELEASE
July 19, 2016 at 11.00 am EET

Outokumpu’s newest additions to its product portfolio, the high-chromium
austenitic EN 1.4420 and high-chromium ferritic EN 1.4622 have been accepted
into European EN 10028-7 standard (Flat products made of steels for pressure
purposes – Part 7: Stainless steels) on July 13, 2016. Outokumpu refers to EN
1.4622 as Core 4622 and to EN 1.4420 as Supra 316plus, which is Outokumpu’s
registered trademark.

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.

Says Product Manager Juha Kela: “We are pleased about getting these two new
Outokumpu stainless steel grades into European EN standard. While it is big
milestone for us, the real benefit goes to our customers. Supra 316plus has
been successfully used for example in Langh Group’s 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.”

The new European Pressure Equipment Directive (PED) Directive 2014/68/EU will
fully enter into force on July 19, 2016 and replace the European Parliament and
the Council Directive 97/23/EC. European EN 10028-7 standard is connected to
the new PED and thus Core 4622 and Supra 316plus fulfil the requirements of the
new directive. The EN 10028-7 standard will eliminate the need for PMA process
and thus these grades can be used as any other pressure vessel stainless
steels. Outokumpu will work actively to update the Tornio plant’s scope of
approval according to EN 10028-7:2016 as soon as possible.

Kela continues: “Selected customers have tested Supra 316plus and Core 4622 for
their products and the standardization will give the official approval stamp on
these grades. The feedback from the tank manufacturers and tube producers has
been positive. They could switch from EN 1.4404 without changes to their
current process or working methods. Core 4622 has been tested for various
deep-drawing applications. The greatest customer benefit in these applications
comes from the fact that grade is virtually roping free; final products don’t
require as much polishing when compared to other ferritic stainless steel which
saves time and money in our customer’s processes.”

Prior the European EN standardization Supra 316plus was accepted to following
ASTM standards:

-- ASTM A240 standard edition 15A as UNS S31655 in March 2015
-- Five ASTM standards (ASTM A249/A249M – 15, ASTM A269/A269M – 15, ASTM
A312/A312M-15a, ASTM A358/A358M – 15 and ASTM A554 − 15a) for tubular
products in October 2015.

For more information:

Corporate communications, tel. +49 173 6629465

Outokumpu Group


Outokumpu is a global leader in stainless steel. We create advanced materials
that are efficient, long lasting and recyclable – thus building a world that
lasts forever. Stainless steel, invented a century ago, is an ideal material to
create lasting solutions in demanding applications from cutlery to bridges,
energy and medical equipment: it is 100% recyclable, corrosion-resistant,
maintenance-free, durable and hygienic. Outokumpu employs 11,000 professionals
in more than 30 countries, with headquarters in Helsinki, Finland and shares
listed in Nasdaq Helsinki.
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Supra 316plus and Core 4622 accepted into European standard EN 10028 EN_19072016.pdf