WIG Rods 2.4831 IGS-Chronin 625 ER-NiCrMo3

Nickel-chromium-molybdenum alloy welding rod/wire electrode for TIG or MIG welding of nickel alloys, cryogenic nickel steels, and dissimilar joints for operating temperatures up to +550°C, cryogenic down to -196°C.

Standard Designation

Material Number

2.4831

AWS/ASME SFA-5.9

ER NiCrMo - 3

EN ISO 18274

S Ni 6625

Main

Applications

Nickel-chromium-molybdenum alloys, e.g., NiCr 22 Mo 9 Nb (1.4876),

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

Dissimilar joints for operating temperatures above +300°C.

Mechanical Properties

of the Weld Metal

(Typical 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% Proof Stress     R_p0.2

MPa

>295

Tensile Strength               R_m

MPa

>760

Elongation at Break            A₅

[%]

>30

Impact Energy        A_V

[J]

LNB

Special Notes

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

Always guide the TIG welding rod in the shielding gas area.

MIG - Preferably weld wire electrode with pulsed arc.

Welding Positions according to EN ISO 6947 TIG

PA, PB, PC, PE, PF

Applicable Shielding Gases TIG

I 1