Stainless steels
FERVEO INX 309L R 17
covered electrode · stick electrodeCatalogue only
AWS class
E309L-17
EN ISO class
E 23 12 L R 32
Tensile strength (Rm)
540–720 MPa
Classification
| AWS class | E309L-17 |
|---|---|
| EN ISO class | E 23 12 L R 32 |
Purpose
- Same class as INX 309L R 16 (low-carbon Cr-Ni 23/13, buffer layers and dissimilar-steel joining), -17 coating variant.
Why it works
Same core and chemistry as INX 309L R 16; the -17 rutile coating variant is the catalog version for this diameter/packaging, with the same stated welding behavior.
Fields of application
- Buffer layer over mild and low-alloy steel, before overlaying or cladding with any stainless electrode.
- Joining stainless steel to mild or low-alloy steel, dissimilar steels, clad steels.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.03 |
| Cr | 23 |
| Mn | 0.8 |
| Ni | 12.6 |
| Si | 0.8 |
Mechanical properties
| Tensile strength (Rm) | 540–720 MPa |
|---|---|
| Yield strength (Rp0.2) | 440 MPa |
| Elongation (A5) | 30 % |
| Impact energy (KV) | 47 J (20 °C) |
Process
| Polarity | DC+/AC |
|---|---|
| Positions | PAflatPBhorizontal-verticalPChorizontalPDhorizontal-overheadPEoverheadPFvertical-up |
| Re-drying | 120–200 °C / ≥2 h |
Sizes and part numbers
| Ø | Length | Current | Request |
|---|---|---|---|
| 2.5 mm | 250 mm | 60–90 A | |
| 3.2 mm | 350 mm | 80–120 A | |
| 4 mm | 350 mm | 100–160 A |
Cross-reference
| Replaces FOX CN 23/12-A (Böhler) | Direct replacement |
| Replaces EutecTrode 309L-17 (Castolin) | Direct replacement |
| Replaces EutecTrode 309L-16 (Castolin) | Direct replacement |
| Replaces OK 67.60 (ESAB) | Direct replacement |
| Replaces S-309L.16 (Hyundai) | Direct replacement |
| Replaces Arosta 309S (Lincoln) | Direct replacement |
| Replaces Limarosta 309S (Lincoln) | Direct replacement |
| Replaces Excalibur 309/309L-16 (Lincoln) | Direct replacement |
| Replaces EI 309L (Magmaweld) | Direct replacement |
| Replaces AS P-309L (Askaynak) | Direct replacement |
| Replaces NIC 309 (Nicrotec) | Direct replacement |
| Replaces CLEARINOX E 309L (Oerlikon) | Direct replacement |
| Replaces SUPRANOX 309L (Oerlikon) | Direct replacement |
| Replaces SUPRANOX RS 309L (Oerlikon) | Direct replacement |
| Replaces 24/12S (Selectarc) | Direct replacement |
| Replaces 309HR (Selectarc) | Direct replacement |
| Replaces UTP 6824 LC (UTP) | Direct replacement |
| Replaces WA TETRA V 309L-E (Welding Alloys) | 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.
Base metals
High-strength unalloyed and heat-treatable steelsferritic Cr and austenitic CrNi steelsaustenitic Mn steelsUnalloyed tempered steelstool steelshard manganese steelshard-to-weld steels
Advantages
- Good cracking resistance with hard-to-weld steels.
Limitations
- High ferrite content in the deposit: risk of sigma-phase embrittlement under sustained exposure at 600–900°C — not recommended for critical structures in that range.