A554 · MT-429

For A554 · MT-429, astm specification is A554; class or grade is MT-429; esab-recommended smaw (stick) filler is AR 309L, OK 67.13; esab-recommended gmaw/gtaw filler is Autrod/Tigrod 309L/309Si/310; esab-recommended fcaw (gas-shielded flux-cored) filler is SB 309L, verified against its source on 2026-09-16.

What the source says

A554 MT301, MT 302, MT 304 AR 308/308H, OK 61.25 Autrod/Tigrod 308H MT305 AR 308/308H/309/309H, OK 61.25 Autrod/Tigrod 308H, MT309S AR 309L Autrod/Tigrod 309L/309Si MT310S OK 67.13 Autrod/Tigrod 310 MT316 AR 316/316H/316L Autrod/Tigrod 316L/316LSi MT316L AR 316L Autrod/Tigrod 316L/316LSi MT317 Autrod/Tigrod 317L MT321, MT347 OK 61.81/61.85 Autrod/Tigrod 347/347Si MT-429 AR 309L, OK 67.13 Autrod/Tigrod 309L/309Si/310

— 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.

— all from assets.esab.com, retrieved 2026-09-16

Source

• assets.esab.comhttps://assets.esab.com/assetbank-esab/assetfile/22174.pdf

Last verified against source: 2026-09-16. Due for re-check by 2028-09-15. This page as Markdown · OKF bundle · full dataset as JSON.