A511 · MT309S
For A511 · MT309S, astm specification is A511; class or grade is MT309S; esab-recommended smaw (stick) filler is AR 309L; esab-recommended gmaw/gtaw filler is Autrod/Tigrod 309L/309Si; esab-recommended saw (submerged arc) filler is 10.93/Autrod 309L, verified against its source on 2026-09-16.
- ASTM specification
- A511 verified
- Class or grade
- MT309S verified
- ESAB-recommended SMAW (stick) filler
- AR 309L verified
- ESAB-recommended GMAW/GTAW filler
- Autrod/Tigrod 309L/309Si verified
- ESAB-recommended SAW (submerged arc) filler
- 10.93/Autrod 309L verified
- ESAB-recommended FCAW (gas-shielded flux-cored) filler
- SB 309L verified
- ESAB-recommended FCAW (self-shielded flux-cored) filler
- CB 309L verified
- ESAB-recommended MCAW (metal-cored) filler
- AR MC309L verified
What the source says
A511 MT302 AR 308/308H/308L, OK 61.25 Autrod/Tigrod 308H/308L/308LSi MT304 AR 308/308H/308L, OK 61.25 Autrod/Tigrod 308H/308L/308LSi MT304L AR 308L Autrod/Tigrod 308L/308LSi MT305 AR 308/308H/309/309H, OK 61.25 Autrod/Tigrod 308H, MT309S AR 309L Autrod/Tigrod 309L/309Si
— assets.esab.com, retrieved 2026-09-16
Where each value comes from
The values above are stated away from the sentence quoted with the answer, so the passage that states them is shown here too.
ESAB-recommended SAW (submerged arc) filler, ESAB-recommended FCAW (gas-shielded flux-cored) filler, ESAB-recommended FCAW (self-shielded flux-cored) filler and ESAB-recommended MCAW (metal-cored) filler
10.93/Autrod 309L SB 309L CB 309L AR MC309L
— all from assets.esab.com, retrieved 2026-09-16
Source
- assets.esab.comhttps://assets.esab.com/assetbank-esab/assetfile/22174.pdf