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ST-347

FIller Metal Breakdown

ST-347

As the weld metal contains ferrite, its resistance to crack is good. Bead appearance and weldability are good. ST-347 has stabilizing element (Nb) thus providing good integranular corrosion resistance and better heat resistance. Due to high creep strength at high temperature, suitable for the welding of boiler and gas turbine.
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MSDS
Data Sheet
  • Welding Positions

Classification

  • AWS A5.9/ASME SFA-5.9 ER347
  • JIS Z 3321 Y347
  • EN ISO 14343-A-W 19 9 Nb
  • KS D7026 Y347

Approvals

ABS
✓

Features

  • Resistance to crack is good
  • Nb contents improves corrosion resistance and heat resistance
Polarity: DC

Application Areas

  • Boiler and gas turbine
Shielding Gas: 100% Ar

Base Materials to be welded

TIG Welding of 18%Cr-8%Ni-Nb(STS 347) and 18%Cr-8%Ni-Ti(STS 321) stainless steel

Diameter / Packaging

Wire Diameter Packaging
1.6 (1/16) 5kg (11lbs) * 1000
2.0 (5/64) 5kg (11lbs) * 1000
2.4 (3/32) 5kg (11lbs) * 1000
2.6 (0.10) 5kg (11lbs) * 1000
3.2 (1/8) 5kg (11lbs) * 1000

Typical Chemical Composition of the Wire (wt%)

C Si Mn P S Cu Ni Cr Mo
0.05 0.41 1.6 0.09 9.1 19.2 0.06

Typical Mechanical Properties of All-Weld Meta

Tensile Strength MPa(ksi) Elongation (%) Temperature °C (°F) Impact Toughness J (ft·lbs)
730 (106) 32

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