A542 · Type C Cl 3, Cl 4, Cl 4A
For A542, class or grade is Type C Cl 3, Cl 4, Cl 4A; esab preheat group is B; esab-recommended smaw (stick) filler is AA 9018-CM; esab-recommended gmaw/gtaw filler is ER90S-B3; esab-recommended saw (submerged arc) filler is 10.62/Autrod 13.20SC, 10.63/Autrod 13.20SC, recorded from its source on 2026-09-16.
- ASTM specification
- A542 verified
- Class or grade
- Type C Cl 3, Cl 4, Cl 4A verified
- ESAB preheat group
- B verified
- ESAB-recommended SMAW (stick) filler
- AA 9018-CM verified
- ESAB-recommended GMAW/GTAW filler
- ER90S-B3 verified
- ESAB-recommended SAW (submerged arc) filler
- 10.62/Autrod 13.20SC, 10.63/Autrod 13.20SC verified
- ESAB-recommended FCAW (gas-shielded flux-cored) filler
- DS 9000-B3 verified
- Suggested preheat by thickness, low hydrogen (H8 and less) — the A-D column for this grade's preheat group
- T < .75: 70, .75 < T < 1.5: 125, 1.5 < T < 2.5: 200, T > 2.5: 300 our reading
- Suggested preheat by thickness, hydrogen above H8 — the A-D column for this grade's preheat group
- T < .75: 175, .75 < T < 1.5: 225, 1.5 < T < 2.5: 275, T > 2.5: 300 our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
A542 Type A Cl 3, Cl 4, Cl 4A B AA 9018-CM ER90S-B3 Type B Cl 3, Cl 4, Cl 4A B AA 9018-CM ER90S-B3 Type C Cl 3, Cl 4, Cl 4A B AA 9018-CM ER90S-B3
— assets.esab.com, retrieved 2026-09-16
Where each value comes from
This source states these in separate places, so each value is shown with the passage it comes from.
ESAB-recommended SAW (submerged arc) filler and ESAB-recommended FCAW (gas-shielded flux-cored) filler
The source prints these values inside the passage below but does not name them there. The passage shows where each one appears; what ties them to this record is the position on the page, not anything the passage says.
10.62/Autrod 13.20SC, 10.63/Autrod 13.20SC DS 9000-B3
Suggested preheat by thickness, low hydrogen (H8 and less) — the A-D column for this grade's preheat group and Suggested preheat by thickness, hydrogen above H8 — the A-D column for this grade's preheat group
Preheat A B C D Low Hydrogen H8 and less T < .75 70 70 200 300 .75 < T < 1.5 70 125 300 400 1.5 < T < 2.5 150 200 300 400 T > 2.5 225 300 350 500 Hydrogen > H8 T < .75 175 175 NR NR .75 < T < 1.5 225 225 NR NR 1.5 < T < 2.5 275 275 NR NR T > 2.5 300 300 NR NR
— all from assets.esab.com, retrieved 2026-09-16
Source
- assets.esab.comhttps://assets.esab.com/assetbank-esab/assetfile/22174.pdf