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Stainless steels

FERVEO INX 318 R

covered electrode · stick electrodeCatalogue only
also as: covered electrode · stick electrode
AWS class
~E318-16
EN ISO class
E 19 12 3 Nb R 32
Tensile strength (Rm)
580–750 MPa

Classification

AWS class~E318-16
EN ISO classE 19 12 3 Nb R 32

Purpose

  • Niobium-stabilized Cr-Ni-Mo rutile electrode (~E318-16) — same core as INX 316 but stabilized, for tanks and piping in food, chemical, textile and paint industry.

Why it works

Niobium stabilizes the deposit against chromium-carbide precipitation — the same role INX 347 plays over the 308 base, here applied to INX 316's Cr-Ni-Mo base, giving a deposit resistant to 400°C without losing the Mo's acid resistance.

Fields of application

  • Tanks and piping in stabilized Cr-Ni-Mo steel, food, chemical, textile and paint industry.

Chemical composition

ElementTypical, %
C0.04
Cr19.4
Mn0.8
Mo2.8
Ni11
Si0.8

Mechanical properties

Tensile strength (Rm)580–750 MPa
Yield strength (Rp0.2)390 MPa
Elongation (A5)30 %
Impact energy (KV)47 J (20 °C)

Process

PolarityDC+/AC
PositionsPAflatPBhorizontal-verticalPChorizontalPDhorizontal-overheadPEoverheadPFvertical-up
Re-drying120–200 °C / ≥2 h

Sizes and part numbers

ØLengthCurrentRequest
2 mm250 mm40–60 A
2.5 mm250 mm50–90 A
3.2 mm300 mm80–120 A
3.2 mm350 mm80–120 A
4 mm350 mm110–160 A

Cross-reference

Replaces FOX SAS 4 (Böhler)Direct replacement
Replaces FOX SAS 4-A (Böhler)Direct replacement
Replaces EI 318 (Magmaweld)Direct replacement
Replaces SUPRANOX RS 318 (Oerlikon)Direct replacement
Replaces UTP 68 Mo (UTP)Direct replacement

Equivalence refers to the classification (AWS / EN ISO), not to product identity. In applications with a qualified procedure (WPS), validate the substitution before use.

Advantages

  • Niobium-stabilized — resistant to 400°C.
  • Weldable on DC+ or AC.

Limitations

Notes