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ST-50.3

FIller Metal Breakdown

ST-50.3

ST-50.3 is a wire for TIG welding with pure Ar gas. All position welding and steel sheet welding can be performed quite easily. Most suitable for one-side welding of tubes. It is used in DC electrode negative polarity.
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MSDS
Data Sheet
  • Welding Positions

Classification

  • AWS A5.18/ASME SFA-5.18 ER70S-3
  • EN ISO 636-A-W2Si

Approvals

ABS
✓

Features

  • Good impact value at low temperature
  • Great workability and bead appearance
  • Good performance
Polarity: DC

Application Areas

  • Pressure vessels
  • Nuclear reactors
  • Rail road car
  • Shipbuilding
  • Pipeline
Shielding Gas: 100% Ar

Base Materials to be welded

Butt and fillet welding of carbon steel for pressure vessels, tubes, ships

Diameter / Packaging

Wire Diameter Packaging
1.2 (0.045) 5kg (11lbs) * 1000
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
0.07 0.65 1.15 0.009 0.009 0.05

Typical Mechanical Properties of All-Weld Meta

Yield Strength MPa(ksi) Tensile Strength MPa(ksi) Elongation (%) Temperature °C (°F) Impact Toughness J (ft·lbs)
430 (62) 540 (78) 30 -40 / -20 150 / 105

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