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Thermanit H-347 Si solid MIG/MAG wire: Böhler Welding wire on a BS300 spool, uncoppered
Thermanit, solid MIG/MAG wire, stainless and acid-resistant steels

Thermanit H-347 Si solid MIG/MAG wire

EN ISO classification14343-A G 19 9 Nb Si
AWS classificationA5.9 / SFA-5.9 ER347Si
Shielding gasM12: Ar with CO2 added (up to 5 %), M13: Ar with O2 added (up to 3 %)
ApprovalsTÜV (00604), DB (43.132.06), CE
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Authorised distributorvoestalpine Böhler Welding
Courier shippingfrom the warehouse in Krotoszyn
Data sheetcomposition, properties, specifications
Wire selectionhelp from a welding engineer
Manufacturer data sheet
Application Specifications Manufacturer datasheet Fits Substitute Bought together
Application

What Thermanit H-347 Si solid MIG/MAG wire is used for

Thermanit H-347 Si is a high-alloyed austenitic stainless solid wire. Typical work covers tanks, process plant, food and chemical equipment and structures in contact with water and steam.

It joins grades such as 1.4301, X5CrNi18-10, 1.4306, X2CrNi19-11, 1.4311, 1.4312 and 1.4541 together with their equivalents. The wire also serves for cladding carbon steel surfaces, and the deposit has an austenitic structure.

  • Classification EN ISO: 14343-A G 19 9 Nb Si
  • AWS classification: A5.9 / SFA-5.9 ER347Si
  • Shielding gas: M12, M13
  • Diameters: 0.8 / 1.0 / 1.2 / 1.5 mm
  • Approvals: TÜV (00604), DB (43.132.06), CE

After welding remove the heat tint by pickling or brushing, the oxide layer alone lowers the corrosion resistance of the joint. Set the gas flow so the pool is covered over the whole length of the bead, and shield the station when you work in wind. Check the contact tip, a worn bore upsets the wire feed and causes burnback.

Manufacturer datasheet

Chemical composition and properties from the manufacturer datasheet

Datasheet PDF

Typical weld metal values from the voestalpine Böhler Welding data sheet, issue 12/2021. The minimum or the range guaranteed by the maker is given in brackets. The figures depend on the heat treatment condition and the shielding gas stated in the row and do not replace testing the joint to your own WPS.

Welding data and approvals
Polaritydirect current, electrode positive (DC+)
Shielding gas to EN ISO 14175M1
ApprovalsTÜV (19611), DB (43.132.84), CE
Datasheet edition12/2021
Mechanical properties of the all-weld metal, typical values
Condition Yield strength Re, MPa Tensile strength Rm, MPa Elongation A, % Impact energy KV, J at 20 °C
u 400 (min. 350) 570 (min. 550) 30 (min. 25) 65
  • u: untreated, as-welded, shielding gas Ar + 2.5% CO2
Fits

For which materials and machines

Base materials
  • 1.4301
  • X5CrNi18-10
  • 1.4306
  • X2CrNi19-11
  • 1.4311
  • 1.4312
  • 1.4541
  • 1.4546
  • 1.4550
  • 1.4552
  • UNS S30400
  • AISI 347
Process and machines

Solid MIG/MAG wire, works on any sound machine for this process: welders. Shielding gas: M12: Ar with CO2 added (up to 5 %), M13: Ar with O2 added (up to 3 %).

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Technical substitute

A substitute for this consumable

We will find a substitute with the same classification, diameter and shielding gas over the phone: +48 669 162 833.

From the same group

Other consumables for the same material

For comparison before you buy. A technical substitute is listed above.

All: Solid MIG/MAG wires