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MIG/TIG ARC WELDING FOR STAINLESS STEELS & CARBON STEELS
SM-308 AWS A5.9 / ASME SFA5.9 ER308
JIS Z3321 Y308
MIG welding of 18%Cr-8%Ni steel for chemical industries such as oil, medical, fertilizer and
textile industries and for nuclear reactors.
Applications
Characteristics on Usage
Though SM-308 is austenitic type stainless steel wire, the weld metal contains ferrite and resistance
to crack is extremely good. The usability, such as arc stability and assimilability of welds to base
metal is extremely good. Resistance to corrosion and the mechanical properties of the weld metal
are good.
Typical Chemical Composition of All-Weld Metal (%)
C Si Mn Ni Cr
0.04 0.41 1.65 9.8 19.9
Typical Mechanical Properties of All-Weld Metal
T.S EL. CVN-Impact Value Ferrite
N/mm2 (lbs/in2) (%) 0 (32 ) -20 (-4 ) Quantity (FN)
590 (85,600) 40 100 (74) 50 (37) 7~10
Typical Welding Conditions (DC+)
Size
A V
speed Gas Flow
Remarks
mm (in) (cm/min.) ( /min.)
1.2 (.045) 260 27 30 25 Shielding gas
1.6 (1/16) 300 29 34 25 100%Ar or Ar+2%O2
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