Stainless steels
FERVEO INX 309H
covered electrode · stick electrodeCatalogue only
also as: solid wireTIG rod
AWS class
E 309 H-16
EN ISO class
ES309-16
Tensile strength (Rm)
550–720 MPa
Classification
| AWS class | E 309 H-16 |
|---|---|
| EN ISO class | ES309-16 |
Purpose
- Cr-Ni 23/12 rutile electrode, slightly higher carbon than INX 309L (0.06%), for higher tensile and hot creep strength.
Why it works
Same Cr-Ni 23/12 core as INX 309L, but with more carbon — the manufacturer states higher tensile and creep strength at elevated temperature compared with INX 309L R.
Fields of application
- Joining of similar or dissimilar austenitic stainless steels.
- High-strength unalloyed and heat-treatable steels, ferritic Cr steels, austenitic Cr-Ni and Mn steels.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.06 |
| Cr | 23 |
| Mn | 0.8 |
| Ni | 12 |
| Si | 0.8 |
Mechanical properties
| Tensile strength (Rm) | 550–720 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-upPGvertical-down |
Sizes and part numbers
| Ø | Length | Current | Request |
|---|---|---|---|
| 2.5 mm | 250 mm | 50–85 A | |
| 3.2 mm | 350 mm | 80–120 A |
Base metals
Alloyed and unalloyed steelsAISI 309 Type SteelTool SteelsAustenitic Cr-Ni and Mn steelsTS EN ISO 3581-B : ES309-16EN ISO 3581-B : ES309-16AWS A5.4 : E 309 H-16
Advantages
- Higher tensile and hot creep strength than INX 309L R.
Limitations
- Intended for continuous high-temperature service; if the part cools after prolonged exposure at 600–900°C, room-temperature toughness may drop due to sigma-phase formation.