TNI 425


EN ISO 18274 - A SNi 6625 (NiCr22Mo9Nb)
TS EN ISO 18274 - A SNi 6625 (NiCr22Mo9Nb)
DIN M. No. 2.4831

Properties And Applications

Ni-Cr-Mo alloyed GTA (TIG) welding rod, depositing Ni-22Cr9Mo3,5Nb weld metal. TNI 425 is used for welding of highly corrosion resistant Ni-Cr-Mo alloys, like Alloy 625, 825 and similar alloys. Due to it's good cryogenic toughness down to -196°C, preferred for welding of cyrogenic nickel alloys, e.g. X1NiCrMoCuN25-20-7. In sulphur free atmospheres the weld metal is non-scaling 1200°C, in sulphurous atmospheres the weld metal can be used in service temperatures up to 500°C. It is also highly resistant stress corrosion cracking and pitting corrosion in phosphoric acid, organic acids, sea water and polluting environments. Weld metal is insensitive to cracking and very resistant to thermal shocks. Used for joining of dissimilar nickel alloys, joining dissimilar stainless steels, low alloyed steels to stainless steels or to nickel alloys, buffering of difficult to weld steels and repair welding of them. Stick Electrode : ENI 425MIG/MAG Welding Wire: MNI 425

Typical Chemical Features of the Welding Wire

Type of AnalysisCSiMnCrNiMoNbTiPSFe
Welding Wire0.010.040.0222.2565.008.703.700.200.020.0010.30

Typical Mechanical Values of Weld Metal(%)

Test ConditionProtection GasYield Strength (N/mm²)Tensile Strength (N/mm²)Elongation A5 (%)Charpy V-Notch Properties (J)
As weldedI15707603920°C → 135-196°C → 130

* Chemical compositon and mechanical properties are valid when using shielding gas .

Application Information

Welding Positions :
Tni 425 Kaynak Pozisyonu Tni 425 Kaynak Pozisyonu Tni 425 Kaynak Pozisyonu Tni 425 Kaynak Pozisyonu Tni 425 Kaynak Pozisyonu Tni 425 Kaynak Pozisyonu


Tni 425 Kutuplama DC(-)

Protection Gas:


Welding Parameters & Efficiency :

Packaging Information

Product CodeDiameter X Length (mm)Weight Of The Box (kg)Boxes Per PackageWeight Of The PackagePackaging Type
26104GBKM21.60x10005.0421.4Cardboard Tube
26104IBKM22.40x10005.0421.4Cardboard Tube

Storage & Re-Drying Information

>Shouldn t be exposed to high statical load and impact.