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ST-309

FIller Metal Breakdown

ST-309

As the weld metal contains ferrite, its crack resistibility is good. Due to its high level of alloy, it has excellent resistance to heat.
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MSDS
Data Sheet
  • Welding Positions

Classification

  • AWS A5.9/ASME SFA-5.9 ER309
  • JIS Z 3321 YS309
  • EN ISO 14343-A-W Z(23 12)

Approvals

ABS CE
✓ ✓

Features

  • Resistance to crack
  • High Efficiency
  • Excellent resistance to heat
Polarity: DC

Application Areas

  • Steel structures
  • Oil, nuclear reactor
Shielding Gas: 100% Ar

Base Materials to be welded

ST-309 is designed for welding of 22% Cr-12% Ni steel and a dissimilar metals, clad side of 18% Cr-8% Ni 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 0.32 1.7 13.3 23.7 0.15

Typical Mechanical Properties of All-Weld Meta

Tensile Strength MPa(ksi) Elongation (%) Temperature °C (°F) Impact Toughness J (ft·lbs)
620 (90) 44 -60 (-75) 145 (107)

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