Abrafil UP S3Si

Abrafil UP S3Si

S3SI wire for submerged arc welding

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Product description

ABRAFIL S3Si is a solid manganese-silicon wire for welding mainly unalloyed and low-alloy steels in SAW processes.

Product application instructions

Non-alloy structural steels acc. to EN 10025 and ASTM : S235JRG2 / A570 Gr. 36 to S355J2G3R / A572 Gr. 50
suitable fluxes BF 3 and BF 5.1

Fine grain steels acc. to EN 10025, EN 10028 and ASTM : P355N / S355NL / A516 Gr. 70 / 633 Gr. E and P460N / S460NL
suitable fluxes BF 3, BF 5.1, BF 6.5 and BF 10

Off-Shore structural steels up to 460 MPa yield strength and BS 4360-Grade 50 D
suitable fluxes BF 5.1 and BF 10

Shipbuilding steels: higher strength, suitable fluxes BF 5.1 and BF 10

Pipe steels acc. to ISO 3183, EN 10208 and API-5 : L360N / X52 to L485Q / X70
suitable fluxes BF 5.1, BF 6.30 and BF 6.5

Boiler and vessel steels acc. to EN 10028 and ASTM : P235GH / A516 Gr.55, P355GH / A516 Gr. 70 and S275J2G3 / A572 Gr. 42, S355J2G3 / A572 Gr. 50
suitable fluxes BF 3, BF 5.1, BF 6.5 and BF 10

Flux type suitability is strongly dependent on its application. In combination with the wire electrode the most suitable flux should match the requirements of the plate material as closely as possible under the existing welding conditions.

PWHT: 620 °C / 1 h

Classification

EN ISO 14171-A SFA 5.17 / AWS A5.17
S3Si EH12K

Chemical analysis (%)

C If Mn Mo Ni Cr P S Cu
0.09 0.33 1.57 0.06 0.04 0.03 0.012 0.009 0.06

Mechanical characteristics

0.2-Yield Strength Tensile Strength Elongation ISO-V impact
> 400 N / mm2 480 - 660 N / mm2 > 22 % 27 J: -62°C

Why choose ABRAFIL UP S3Si?

  • Excellent weldability on mild and low-alloy steels
    Ideal for welding structural steels, tanks, heavy structures, pipelines, etc.

  • Deposition with good mechanical properties
    It offers excellent toughness and strength, particularly at low temperatures (depending on the flux used).

  • Compatibility with many fluxes
    ABRAFIL UP S3Si is versatile: it can be used with neutral, active or alloyed fluxes to adjust cord characteristics.

  • Optimized silicon content (~0.8-1%)
    Si improves wettability (bead beauty) and helps clean the surface slightly during welding (slight tolerance to surface impurities).

  • Heavy-duty industrial applications
    Used for large thicknesses and long passes, typically in structural steelwork, offshore, boilers, railcar manufacturing, etc.