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diamondspark 620 MC metal-cored wire: Böhler Welding wire on a BS300 spool, uncoppered
diamondspark, flux-cored wire, high-strength steels

diamondspark 620 MC metal-cored wire

EN ISO classification18276-A T 62 4 Z M M21 1 H5
AWS classificationA5.28 / SFA-5.28 E100C-GH4
Shielding gasI1: 100 % argon, M21: Ar with 15 to 25 % CO2
ApprovalsABS, DNV
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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 diamondspark 620 MC metal-cored wire is used for

diamondspark 620 MC is a seamless, high strength metal-cored wire alloyed with nickel and molybdenum, with a yield strength above 620 MPa. It is used in machine building, crane structures and commercial vehicles.

The wire suits grades such as ASTM A519. Its seamless sheath protects the core against moisture even after long storage.

  • Classification EN ISO: 18276-A T 62 4 Z M M21 1 H5
  • AWS classification: A5.28 / SFA-5.28 E100C-GH4
  • Shielding gas: M21, I1
  • Diameters: 1.2 / 1.6 mm
  • Approvals: ABS, DNV

Keep the hydrogen level low: dry consumables, a clean groove and preheating on heavier sections. Set the parameters for spray arc, in the short arc range a metal-cored wire loses its deposition advantage. Keep the gas cover complete, without a full slag layer the pool is more sensitive to draughts. Match the diameter to the material thickness and the welding position, thinner wires are easier to control out of position.

Manufacturer datasheet

Chemical composition and properties from the manufacturer datasheet

Datasheet PDF

Typical weld metal values from the voestalpine Böhler Welding data sheet, issue 11/2021. 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.

Chemical composition, wt.-%
CSiMnNiMo
gas M210,100,501,800,900,55
Welding data and approvals
Polaritydirect current, electrode positive (DC+)
Shielding gas to EN ISO 14175M21, I1
Type of consumableseamless metal cored wire for high strength steels, alloyed with nickel and molybdenum
ApprovalsABS, DNV
Datasheet edition11/2021
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 -29 °C Impact energy KV, J at -40 °C
u 780 (min. 620) 820 (range 700 do 830) 20 (min. 17) - 70 (min. 47)
s 670 (min. 620) 750 (range 700 do 830) 22 (min. 17) - 60 (min. 47)
s1 720 (min. 620) 800 (range 700 do 830) 20 (min. 17) 55 (min. 35) -
  • u: Untreated, as welded, shielding gas M21
  • s: stress relieved 650°C x 4h, shielding gas M21
  • s1: stress relieved 650°C x 4h, shielding gas I1
Fits

For which materials and machines

Base materials
  • ASTM A519
Process and machines

Flux-cored wire, works on any sound machine for this process: welders. Shielding gas: I1: 100 % argon, M21: Ar with 15 to 25 % CO2.

Used welders New welders Ask us to help you choose
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: Flux-cored wires