A240 · 430
For A240 · 430, astm specification is A240; class or grade is 430; esab preheat group is C; esab-recommended gmaw/gtaw filler is Autrod/Tigrod 430Ti/430LNb; esab-recommended saw (submerged arc) filler is Flux 10.93/Autrod 430, recorded from its source on 2026-09-16.
- ASTM specification
- A240 verified
- Class or grade
- 430 verified
- ESAB preheat group
- C verified
- ESAB-recommended GMAW/GTAW filler
- Autrod/Tigrod 430Ti/430LNb verified
- ESAB-recommended SAW (submerged arc) filler
- Flux 10.93/Autrod 430 verified
- ESAB-recommended MCAW (metal-cored) filler
- AR MC439Ti/MC430LNb verified
- Suggested preheat, low hydrogen (H8 and less), by thickness
- T < .75: 200, .75 < T < 1.5: 300, 1.5 < T < 2.5: 300, T > 2.5: 350 our reading
- Suggested preheat, hydrogen above H8, by thickness
- T < .75: NR, .75 < T < 1.5: NR, 1.5 < T < 2.5: NR, T > 2.5: NR 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
A240 201, 301, 302, 304 AR 308/308H, OK 61.25, AR 308L Autrod/Tigrod 308H/308L/308LSi 201L, 301L, 301LN, 304L, 304LN AR 308L Autrod/Tigrod 308L/308LSi 202, 304H, 304N AR 308/308H, OK 61.25 Autrod/Tigrod 308H 305 AR 308/308H, OK 61.25, AR 309/309H Autrod/Tigrod 308H 309H AR 309/309H 309S AR 309L Autrod/Tigrod 309L/309Si 310S, 310H OK 67.13 Autrod/Tigrod 310 316H AR 316/316H Autrod/Tigrod 316L/316LSi 316 AR 316/316H/316L Autrod/Tigrod 316L/316LSi 316L, 444 AR 316L Autrod/Tigrod 316L/316LSi 317 Autrod/Tigrod 317L 317L Autrod/Tigrod 317L 321, 321H, 347, 347H, 348, 348H OK 61.81/61.85 Autrod/Tigrod 347/347Si 405, S41500 OK 68.17 Autrod/Tigrod 410NiMo 409, S40910, S40920, S40930 AR 309/309H/308/308H, OK 61.25 Autrod/Tigrod 409Nb 429 C AR 309L, OK 67.13 Autrod/Tigrod 309L/309Si/310 430 C Autrod/Tigrod 430Ti/430LNb
— 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 that states it.
ESAB-recommended SAW (submerged arc) filler and ESAB-recommended MCAW (metal-cored) filler
Flux 10.93/Autrod 430 AR MC439Ti/MC430LNb
Suggested preheat, low hydrogen (H8 and less), by thickness and Suggested preheat, hydrogen above H8, by thickness
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