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Thermanit, solid MIG/MAG wire, creep-resistant CrMo steels

Thermanit MTS 4 Si solid MIG/MAG wire

EN ISO classification21952-A G CrMoWV 12 Si
AWS classificationA5.28 / SFA-5.28 EG [ER90S-B9(mod.)]
Shielding gasM12: Ar with CO2 added (up to 5 %), M13: Ar with O2 added (up to 3 %)
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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 MTS 4 Si solid MIG/MAG wire is used for

Thermanit MTS 4 Si is a low-alloyed, creep resistant solid wire. It suits welding CrMo steels on boilers, steam lines, refinery plant and parts working at elevated temperature.

It is used on grades such as 1.4922, 1.4935, 1.4923, 1.4926, 1.4913 and 1.4931. The deposit stands up to creep at elevated temperature, and the wire goes into boiler, pressure vessel and petrochemical plant construction.

  • Classification EN ISO: 21952-A G CrMoWV 12 Si
  • AWS classification: A5.28 / SFA-5.28 EG [ER90S-B9(mod.)]
  • Shielding gas: M12, M13
  • Diameters: 1.2 mm

Do not break off welding and do not let the joint cool below the interpass temperature before the fill is finished. Match the drive rolls to the wire diameter and check the liner, wire slip shows up at once in an unstable arc. Watch the wire stick-out from the contact tip, too long a one lowers the arc voltage and worsens the fusion.

Manufacturer datasheet

Chemical composition and properties from the manufacturer datasheet

Datasheet PDF

Typical weld metal values from the voestalpine Böhler Welding data sheet, issue 10/2023. 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.

Chemical composition, wt.-%
CSiMnCrNiMoWV
0,200,30,611,00,41,00,50,3
Welding data and approvals
Polaritydirect current, electrode positive (DC+)
Shielding gas to EN ISO 14175M1
ApprovalsDB (42.132.91), CE
Datasheet edition10/2023
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
s 585 (min. 550) 780 (min. 690) 16 (min. 15) 45 (min. 34)
  • s: heat treated, tempered 760 °C / 4 h, shielding gas Ar + 2.5 % CO2
Fits

For which materials and machines

Base materials
  • 1.4922
  • 1.4935
  • 1.4923
  • 1.4926
  • 1.4913
  • 1.4931
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