Welding of 25%Cr-9%Ni-3%MoCu duplex STS with chemical plant, shipbuilding, nuclear plant industries(UNS S32520, S32550)
AWSA5.22 : E2594T1-1
JISZ3323 : TS329 J4L FC1


Sizes (mm) Standard Welding Position Shielding gas Polarity
1.2~1.6 AWS A5.22
JIS Z3323
TS329 J4L FC1
F, HF, H, VU, VD, OH CO2 DC(+)
Typical chemical composition all-weld metal (%)
C Si Mn P S Cr Ni Mo Remark
0.03 0.48 0.94 25.52 9.25 3.62 PREN 40.5

FN 55

Typical mechanical properties of all-weld metal
Y.S (MPa) T.S (MPa) EI. (%) Hardness (HV) IV (J) PWHT
817 909 22 28 (-40℃)