FCW S 309H

FCW S 309H

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Product description

– Stainless steel flux-cored wire for gas-shielded arc welding

– 24% chromium – 13% nickel – high-carbon deposit

– Outstanding weldability, no spatter

– Automatic slag removal, excellent radiographic quality

– High productivity for welding in horizontal position

– Can be used in

position – Can be welded with mixed gas or CO2

Product application instructions

APPLICATIONS

FCW S 309H provides good resistance to hot oxidation and creep. It is suitable for joining refractory stainless steels of the corresponding grade

Welding positions: EN ISO 6947: PA, PB, ASME IX: 1G, 1F, 2F.

Classification

AWS A 5.22 EN ISO 17633-A: ASME IX Qualification EN ISO 17633-B
E309T0-4 - E309T0-1 T 22 12 H R M 3 - T 22 12 H R C 3 QW432 F-N° 6 / QW442 A-N° 8 TS309-FB0

Chemical analysis (%)

C Mn If Cr Ni
0.06 1.4 0.8 23.0 12.8

Mechanical characteristics

Rm (MPa) Rp0.2 (MPa) A5 (%) KCV
600 495 33 20°C: 50 J

Why choose FCW S 309H cored wire?

  • Specific to 309H stainless steels:

    • 309H is a high-temperature-resistant stainless steel with a high carbon content (H = High carbon) for improved creep resistance.

    • 309H flux-cored wire is designed for welding dissimilar steels (e.g. carbon steel + stainless steel) or stainless steels subjected to temperatures > 600°C.

  • Advantages of flat welding only :

    • 309H flux-cored wire for flat welding is optimized for high-speed deposition with controlled penetration.

    • In the flat position, it allows a high deposition rate, which increases productivity, particularly in heavy industry or prefabrication.

  • Excellent resistance to oxidation and heat:

    • The deposited metal resists oxidation up to 1000°C, making it ideal for applications such as boilers, furnaces and heat exchangers.

  • Less deformation than with solid wire:

    • Thanks to better thermal control and a softer arc, flux-cored wire limits stress and therefore the risk of hot cracking or deformation.

  • Very good appearance of the weld bead:

    • Smooth surface, few splashes, little cleaning required – essential in demanding environments.

  • Alloy compatible with non- or low-alloy steels :

    • 309H is often used as a transition metal between mild steels and stainless steels – something the cored wire handles perfectly.

  • Development of self-detachable slag :

    • Facilitates series welding operations, saving time and improving working comfort.