Page 1 - SD 2205

PRODUCT DATA SHEET

Corrosion Stainless Steel

DUPLEX STAINLESS STEEL GRADE

SD 2205 is a nitrogen alloyed ( 0.15%) austenitic-ferritic stainless steel (22.05
type) with improved structure stability and high general, localised and stress
corrosion resistance properties.

SD 2205 with 22% Cr and 3% Mo additions, performs much better than 316L grade
in almost all corrosive media,.
The yield strength is about twice that of austenitic stainless steels. This allows the
designer to save weight and makes the alloy more cost competitive when
compared to 316 L grade.
Typical operation temperatures are -50°C/+ 280°C (-58°F/+536°F). Lower
temperatures uses could to be considered require additional precautions, in
particular for welded structures.
SD 2205 is a multi-purposes material which can be used in various corrosive
media. Typical applications are Pulp and Paper industry, Oil and Gas industry,
Pollution control equipments, Chemical industry and Chemical tankers.

STANDARD EURONORM ............................. 1.4462 - X2 Cr Ni Mo 22.5.3
AFNOR ...................................... Z3 CND 22.05 AZ
DIN ................................................. 2 Cr Ni Mo 22-05
W. Nr 1.4462 ; VdTÜV Blatt 418
ASTM........................................ A240 - UNS S31803- UR 45 N

CHEMICAL Typical values (Weight %)

ANALYSIS C Cr Ni Mo N Others
.020 22 5.3 3 .16 S  .002
PREN = [Cr %] + 3.3 [Mo %] + 16 [N %]  33 or 34
Mo content is optimised in the 2.7 - 3.1% range

MECHANICAL Tensile properties - Minimum values

PROPERTIES °C Rp 0.2 Rp 1.0 Rm °F YS 0.2% YS 1.0% UTS A/El %
MPa
MPa
680
20 460 490 MPa 68 KSI KSI KSI 25
67
71
98
50 430 470 660 122 62 68 96 25
100 360 400 630 212 52 57 92 25
150 340 380 605 302 49 54 88 20
200 320 360 590 392 46 52 86 20
250 305 345 590 482 44 50 86 20
300 290 330 590 572 42 48 86 20
For solution annealed condition and plate thickness  50 mm (2").
SD 2205 grade should not be used over 280°C (530°F) for long periods.