Mild & carbon steels
FERVEO STL 420B4 HD P2
covered electrode · stick electrodebasic coatingCatalogue only
AWS class
E 7018 H4
EN ISO class
E 42 4 B 42 H5
Tensile strength (Rm)
510–600 MPa
Recovery
120 %
Classification
| AWS class | E 7018 H4 |
|---|---|
| EN ISO class | E 42 4 B 42 H5 |
Purpose
- Low-hydrogen basic electrode, one mechanical-strength and toughness step above FERVEO STL 380B4 (AWS E 7018 H4, EN ISO E 42 4 B 42 H5).
Why it works
Same low-hydrogen basic character as FERVEO STL 380B4, at the FERVEO STL ladder's next mechanical-strength and certified-toughness step.
Fields of application
- General carbon-steel fabrication, where one more step of strength and toughness than FERVEO STL 380B4 is needed.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.07 |
| Mn | 1 |
| Si | 0.5 |
Mechanical properties
| Tensile strength (Rm) | 510–600 MPa |
|---|---|
| Yield strength (Rp0.2) | 420 MPa |
| Elongation (A5) | 24 % |
| Impact energy (KV) | 47 J (−40 °C) |
Process
| Polarity | DC+ |
|---|---|
| Positions | PAflatPBhorizontal-verticalPChorizontalPDhorizontal-overheadPEoverheadPFvertical-up |
| Re-drying | 300–350 °C / ≥2 h |
| Recovery | 120 % |
Sizes and part numbers
| Ø | Length | Current | Request |
|---|---|---|---|
| 2.5 mm | 350 mm | 80–110 A | |
| 3.2 mm | 350 mm | 100–140 A | |
| 4 mm | 450 mm | 130–190 A | |
| 5 mm | 450 mm | 190–240 A |
Cross-reference
| Replaces FOX EV 50 (Böhler) | Direct replacement |
| Replaces FOX 7018 (Böhler) | Direct replacement |
| Replaces OK 48.00 (ESAB) | Direct replacement |
| Replaces OK 55.00 (ESAB) | Direct replacement |
| Replaces OK 48.15 (ESAB) | Direct replacement |
| Replaces S-7018.G (Hyundai) | Direct replacement |
| Replaces LB-52-18 (Kobelco) | Direct replacement |
| Replaces Excalibur 7018-1 MR (Lincoln) | Direct replacement |
| Replaces Excalibur 7018 MR (Lincoln) | Direct replacement |
| Replaces Conarc 49C (Lincoln) | Direct replacement |
| Replaces Conarc 49 (Lincoln) | Direct replacement |
| Replaces Baso G (Lincoln) | Direct replacement |
| Replaces Baso 120 (Lincoln) | Direct replacement |
| Replaces Jetweld LH-70 (Lincoln) | Direct replacement |
| Replaces Jetweld LH-73 (Lincoln) | Direct replacement |
| Replaces ESB 52 (Magmaweld) | Direct replacement |
| Replaces ESB 48 (Magmaweld) | Direct replacement |
| Replaces ESB 50 (Magmaweld) | Direct replacement |
| Replaces AS B-204 (Askaynak) | Direct replacement |
| Replaces AS B-248 (Askaynak) | Direct replacement |
| Replaces AS B-248 H5 (Askaynak) | Direct replacement |
| Replaces AS B-255 (Askaynak) | Direct replacement |
| Replaces NIC 7018 (Nicrotec) | Direct replacement |
| Replaces SUPERCITO (Oerlikon) | Direct replacement |
| Replaces SUPERCITO 7018S (Oerlikon) | Direct replacement |
| Replaces SUPERCITO A (Oerlikon) | Direct replacement |
| Replaces TENACITO R (Oerlikon) | Direct replacement |
| Replaces TENAX 35S (Oerlikon) | Direct replacement |
| Replaces TENAX 35S R (Oerlikon) | Direct replacement |
| Replaces TENAX 58S (Oerlikon) | Direct replacement |
| Replaces TENAX 77 (Oerlikon) | Direct replacement |
| Replaces B56S (Selectarc) | Direct replacement |
| Replaces B58 (Selectarc) | Direct replacement |
| Replaces B7018S (Selectarc) | Direct replacement |
| Replaces UTP 614 Kb (UTP) | Direct replacement |
| Replaces WA SPEEDARC 7018-1-E (Welding Alloys) | Direct replacement |
| Replaces WA SPEEDARC 7018-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
S235JR-E295E335S235J2G3-S355J2G3C22C35P235T1-P355T1P235T2P355T2L210-L360L290MB-L360MBP235G1THP255G1THP235GH-P295GHS235JRS1-S235J4SS315G1S-S355G3SS255N-S355NP255NH-P355NHS255NL-S355NLGE200-GE300API 5L: ABX42X46X52X56X60
Advantages
- One mechanical-strength and certified-toughness step above FERVEO STL 380B4.
Limitations
- DC(+) polarity only — for AC welding, see FERVEO STL 420B4 HD AC.