Welding wire MTC MT-309 1.4829

Welding rod/wire electrode made of austenitic chromium-nickel steel for TIG or MIG/MAG welding of heat-resistant steels. Weld metal is scale-resistant up to +800°C.

Most important applications

Dissimilar steels (ferritic-austenitic joints),

claddings and buffer layers.

Most important

Heat- and scale-resistant steels, e.g.

Base materials

1.4710

G-X 30 CrSi 6

1.4825

G-X 25 CrNiSi 18 9

1.4729

G-X 40 CrSi 13

1.4828/1.2780

X 15 CrNiSi 20 12

1.4740

G-X 40 CrSi 17

1.4878

X 12 CrNiTi 18 9

Welding positions according to DIN EN ISO 6947 MIG

PA, PB, PF

Standard designation

Material number

1.4829

AWS/ASME SFA-5.9

ER 309 Si

EN ISO 14343-A

G/W 22 12H

Special notes

Claddings and buffer layers are corrosion-resistant even in the first layer. No risk of martensite formation (root welding) even with higher dilution rates. Operating temperatures for ferritic-austenitic joints max. +300°C. For prolonged annealing treatment above +300°C, nickel-based welding consumables must be used.