Stainless steels
FERVEO INX 308H R
covered electrode · stick electrodeCatalogue only
AWS class
E 308 H- 16
EN ISO class
E 19 9 H R 32
Tensile strength (Rm)
550–650 MPa
Classification
| AWS class | E 308 H- 16 |
|---|---|
| EN ISO class | E 19 9 H R 32 |
Purpose
- Rutile electrode from the 308 family for high-temperature service (up to 700°C) — the "H" (controlled 0.04–0.08% carbon) version of INX 308L R, for AISI 304H/321H/347H.
Why it works
Same austenitic Cr-Ni core as INX 308L, but with slightly higher, controlled carbon (0.07% typical) for better creep strength at elevated temperature — the manufacturer states higher creep resistance than INX 308L R in the same service.
Fields of application
- Joining and surfacing of high-temperature austenitic Cr-Ni steel and equivalent cast steel.
- Continuous service up to 700°C.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.07 |
| Cr | 19 |
| Mn | 0.8 |
| Ni | 10.4 |
| Si | 0.7 |
Mechanical properties
| Tensile strength (Rm) | 550–650 MPa |
|---|---|
| Yield strength (Rp0.2) | 355 MPa |
| Elongation (A5) | 35 % |
| Impact energy (KV) | 47 J (20 °C) |
Process
| Polarity | DC+/AC |
|---|---|
| Positions | PAflatPBhorizontal-verticalPChorizontalPDhorizontal-overheadPEoverheadPFvertical-up |
Sizes and part numbers
| Ø | Length | Current | Request |
|---|---|---|---|
| 2.5 mm | 250 mm | 50–80 A | |
| 3.2 mm | 350 mm | 80–110 A | |
| 4 mm | 350 mm | 110–140 A |
Cross-reference
| Replaces SUPRANOX RS 308H (Oerlikon) | 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
DIN; X5CrNi18 -10X6CrNiTi18-10X6CrNiNb18-10X8CrNiTi18-10X7CrNi18-9AISI; 304304H321321H347347H
Advantages
- Fracture and corrosion resistance.
- Higher hot creep resistance than INX 308L R.
- All positions except vertical-down.