Böhler Welding, solid MIG/MAG wire, mild and low-alloy steels

BÖHLER EMK 6-Ultra solid MIG/MAG wire

EN ISO classification14341-A G 42 4 M21 3Si1 G 42 4 C1 3Si1
AWS classificationA5.18 ER70S-6
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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

What BÖHLER EMK 6-Ultra solid MIG/MAG wire is used for

BÖHLER EMK 6-Ultra is a solid MIG/MAG wire for mild and low-alloy steels, fine-grained grades included. It is used in structural steelwork, on tanks, piping and series production.

It joins grades such as S235JR, S355JR, S235J0, S355J0, S235J2, S355J2 and S275N together with their equivalents, and the wire runs well on robot and mechanised stations.

  • Classification EN ISO: 14341-A, G 42 4 M21 3Si1, G 42 4 C1 3Si1
  • AWS classification: A5.18 ER70S-6
  • Diameters: 0.8 / 1.0 / 1.2 / 1.4 / 1.6 mm

On thicker parts and in a cold workshop plan preheating to cut the risk of cold cracking. Check the contact tip, a worn bore upsets the wire feed and causes burnback. Match the drive rolls to the wire diameter and check the liner, wire slip shows up at once in an unstable arc. Thinner diameters suit root runs and thin sheet, thicker ones the fill passes.

Manufacturer datasheet

Chemical composition and properties from the manufacturer datasheet

Datasheet PDF

Typical weld metal values from the voestalpine Böhler Welding data sheet, issue 05/2026. 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.-%
CSiMn
0,070,901,45
Welding data and approvals
Polaritydirect current, electrode positive (DC+)
Shielding gas to EN ISO 14175C1, M1, M2, M3
ApprovalsTÜV (20297), DB (42.132.98), CWB (CSA W48-23: B-G 49A 3 C1 S6), DNV, LR, RINA, CE
Datasheet edition05/2026
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 -40 °C
u 510 (min. 420) 600 (range 500 do 640) 24 (min. 20) 100 (min. 47)
u1 480 (min. 420) 585 (range 500 do 640) 27 (min. 20) 85 (min. 47)
u2 440 (min. 420) 540 (range 500 do 640) 29 (min. 20) 120 (min. 47)
s 430 540 24 125
  • u: Untreated, as welded, shielding gas M20
  • u1: Untreated, as welded, shielding gas M21
  • u2: Untreated, as welded, shielding gas C1
  • s: Stress relieved 620°C / 3h, shielding gas M21
Fits

For which materials and machines

Base materials
  • S235JR
  • S355JR
  • S235J0
  • S355J0
  • S235J2
  • S355J2
  • S275N
  • S420N
  • S275M
  • S420M
  • P235GH
  • P355GH
Process and machines

Solid MIG/MAG wire, works on any sound machine for this process: welders.

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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