Welding of 25%Cr-9%Ni-3%MoCu duplex STS with chemical plant, shipbuilding, nuclear plant industries (UNS S32520, S32550)

AWS           A5.22 : E2553T0-G
EN              ISO 17633-B : TS2553-FC0
JIS              Z3323 : TS329 J4L FC0


Sizes (mm) Standard Welding Position Shielding gas Polarity
1.2~1.6 AWS A5.22
JIS Z3323
EN ISO 17633-B
TS329 J4L FC0
F, HF CO2 DC(+)
Typical chemical composition all-weld metal (%)
C Si Mn P S Cr Ni Mo Remark
0.03 0.60 1.00 25.60 9.00 3.7 PREN 40.5

FN 55

Typical mechanical properties of all-weld metal
Y.S (MPa) T.S (MPa) EI. (%) Hardness (HV) IV (J) PWHT
750 860 25 27 (-40℃)