Welding wire VDM FM 625 2.4831 ER-NiCrMo3

Standard designation

EN ISO 18274

S Ni 6625

Material number

2.4831

AWS/ASME SFA-5.14

ER NiCrMo - 3

Main

areas of application

Nickel-chromium-molybdenum alloys, e.g., NiCr 22 Mo 9 Nb

NiCr 22 Mo 6 Cu (2.4618), NiCr 22 Mo 7 Cu (2.4619) and their joints with unalloyed, low-alloy, and high-alloy steel/cast steel; claddings; cryogenic nickel steels, e.g., X 8 Ni 9 (1.4529)

Dissimilar metal joints for operating temperatures over +300°C.

Welding positions according to DIN EN ISO 6947 MIG

PA, PB, PF

Mechanical properties

of the weld metal

(Guideline values)

Welding process

Shielding gas

Heat treatment

TIG

Welding argon

untreated

MIG

Welding argon

untreated

Test temperature

[°C]

+20°C

-196°C

+20°C

-196°C

0.2% yield strength     R_p0,2

MPa

>295

Tensile strength               R_m

MPa

>760

Elongation at break            A₅

[%]

>30

Notch impact energy        A_V

[J]

LNB

Special notes

Cleanliness of the workpiece in the weld seam area is a prerequisite for a crack-free connection. Backing gas is required for thin sheets and root passes. For V- and X-seams, the opening angle should be at least 70°.

Always keep the TIG welding rod within the shielding gas zone.

MIG wire electrode should preferably be welded with pulsed arc.