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BÖHLER DMO-IG TIG rod: Böhler Welding TIG rods in an R20 box, coppered
Böhler Welding, TIG rod, creep-resistant CrMo steels

BÖHLER DMO-IG TIG rod

EN ISO classification21952-A W MoSi
AWS classificationA5.28 / SFA-5.28 ER70S-A1 (ER80S-G)
Shielding gasI1: 100 % argon
ApprovalsTÜV (00020), KTA 1408.1; (8066), DB (42.132.70), BV (UP), DNV, CRS, 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 BÖHLER DMO-IG TIG rod is used for

BÖHLER DMO-IG is a low-alloy, creep resistant TIG rod. It is used on boilers, steam pipelines, refinery installations and parts working at elevated temperature.

Base materials include S235JR, S355JR, S235J0, S355J0, S450J0, S235J2 and S355J2. The deposit resists creep at elevated temperature.

  • Classification EN ISO: 21952-A W MoSi
  • AWS classification: A5.28 / SFA-5.28 ER70S-A1 (ER80S-G)
  • Shielding gas: I1
  • Diameters: 0.8 / 1.0 / 1.2 / 1.6 / 2.0 / 2.4 / 3.0 / 3.2 mm
  • Approvals: TÜV (00020), KTA 1408.1; (8066), DB (42.132.70), BV (UP), DNV, CRS, CE

Do not interrupt welding and do not let the joint drop below the interpass temperature before the fill is finished. Set the gas post-flow long enough for the pool and the electrode to cool under the shield. Grind the tungsten tip along its axis and hold a short arc, otherwise the pool spreads.

Manufacturer datasheet

Chemical composition and properties from the manufacturer datasheet

Datasheet PDF

Typical weld metal values from the voestalpine Böhler Welding data sheet, issue 10/2025. 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.-%
CSiMnMo
0,10,61,10,5
Welding data and approvals
Polaritydirect current, electrode negative (DC-)
Shielding gas to EN ISO 14175I1
ApprovalsTÜV (00020, 08066), DB (42.132.72), BV, DNV, CE
Datasheet edition10/2025
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 Impact energy KV, J at -30 °C
a 530 (min. 470) 650 (range 550 to 740) 26 (min. 22) 180 (min. 130) 100 (min. 80)
s 480 (min. 470) 585 (min. 550) 27 (min. 22) 210 (min. 150) 180 (min. 130)
  • a: as welded
  • s: stress relieved (620 °C / 1 h)
Fits

For which materials and machines

Base materials
  • S235JR
  • S355JR
  • S235J0
  • S355J0
  • S450J0
  • S235J2
  • S355J2
  • S275N
  • S460N
  • S275M
  • S460M
  • P235GH
Process and machines

TIG rod, works on any sound machine for this process: welders. Shielding gas: I1: 100 % argon.

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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: TIG welding rods