Page 1 - SD 2507Cu

PRODUCT DATA SHEET

Corrosion Stainless Steel

DUPLEX STAINLESS STEEL GRADE

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SD 2507Cu (UR 52N ) is a super duplex stainless steel with 25% Cr and a
PREN value higher than 40. The minimum guaranteed yield strength is 550 MPa
which allows the designer to reduce weight. The molybdenum and nitrogen
additions have been optimized in order to obtain the best corrosion resistance
properties even for heavy plates. High nitrogen content improves the structure
stability particularly in HAZ. Its corrosion resistance is much better than UR
B6/N08904 and roughly equivalent to 6 Mo super austenitic alloys.

Copper additions increase the corrosion resistance properties, particularly in
sulphuric acid media.

SD 2507Cu is a cost efficient grade designed for offshore, marine, phosphoric
acid, sulphuric acid applications... as well as pollution control equipments.

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STANDARDS SD 2507Cu........................................ UR 52N
EURONORM .................................... 1. 4507 - X2 Cr Ni Mo Cu N 25.6.3
AFNOR .............................................. Z3 CNDU 25.07 AZ
ASTM. ........................................... UNS S32550/S32520

CHEMICAL Typical values (Weight %)

ANALYSIS C Cr Ni Mo N Others
< 0.030 25 6.5 3.5 0.25 Cu  1.5
PREN = [Cr %] + 3.3 [Mo %] + 16 [N %]  40

Tensile properties - minimum values
MECHANICAL Rp 0.2 Rp 1.0 Rm YS 0.2% YS 1.0% UTS El
%
PROPERTIES °C MPa MPa MPa °F KSI KSI KSI 25
570
68
770
550
20
111
78
83
100 485 500 700 212 70 72 102 25
250 400 420 640 500 57 61 92 25
Typical temperature range of use : -50°C/+ 270° C (-58°F /+518°F)
For lower temperature applications, please contact us.