High-strength steels
FERVEO HTS 500B3
covered electrode · stick electrodebasic coatingCatalogue only
AWS class
E 8018-G H4
EN ISO class
E 50 3 B 42 H5
Tensile strength (Rm)
550–720 MPa
Recovery
115 %
Classification
| AWS class | E 8018-G H4 |
|---|---|
| EN ISO class | E 50 3 B 42 H5 |
Purpose
- Manganese-alloyed, low-hydrogen basic electrode (H4) (AWS E 8018-G H4, EN ISO E 50 3 B 42 H5), also intended for rail-steel repair.
Why it works
Manganese hardening, without nickel, gives the next FERVEO HTS ladder step with a simpler alloy system; this class's impact test ("3" in the EN ISO designation) is certified at a less demanding temperature than the "6" sub-family (420B6/460B6/550B6).
Fields of application
- Carbon-manganese steel, cast steel, and high-strength rail-steel repair — API 5L pipe up to X70.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.06 |
| Mn | 1.6 |
| Si | 0.7 |
Mechanical properties
| Tensile strength (Rm) | 550–720 MPa |
|---|---|
| Yield strength (Rp0.2) | 500 MPa |
| Elongation (A5) | 19 % |
| Impact energy (KV) | 47 J (−30 °C) |
Process
| Polarity | DC+ |
|---|---|
| Positions | PAflatPBhorizontal-verticalPChorizontalPDhorizontal-overheadPEoverheadPFvertical-up |
| Re-drying | 350–400 °C / ≥2 h |
| Recovery | 115 % |
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 OK 73.08 (ESAB) | Direct replacement |
| Replaces EM 160 (Magmaweld) | Direct replacement |
| Replaces AS DA-708 (Askaynak) | Direct replacement |
| Replaces TENAX 56ST (Oerlikon) | Direct replacement |
| Replaces TENAX 70 (Oerlikon) | Direct replacement |
| Replaces TENCORD 85 Kb (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
S355J2G3E295-E360C35-C60S315N-S500NP315NH-P500NHGE240-GE340Resistance of the rail steels up to 785 N/mm2 are used.API 5L: X52X56X60X65X70
Advantages
- Higher deposit recovery — improves productivity in build-up and rail-repair applications.
- A specific high-strength rail-repair application, uncommon in the FERVEO HTS ladder.
Limitations
- Toughness certified at a less demanding temperature than the "6" sub-family (420B6/460B6/550B6) — use that sub-family for colder service.