A473 · 502
For A473 · 502, astm specification is A473; class or grade is 502; esab preheat group is C; esab-recommended smaw (stick) filler is AA 8018-B6/8018-B6L; esab-recommended gmaw/gtaw filler is ER80S-B6, recorded from its source on 2026-09-16.
- ASTM specification
- A473 verified
- Class or grade
- 502 verified
- ESAB preheat group
- C verified
- ESAB-recommended SMAW (stick) filler
- AA 8018-B6/8018-B6L verified
- ESAB-recommended GMAW/GTAW filler
- ER80S-B6 verified
- ESAB-recommended FCAW (gas-shielded flux-cored) filler
- SB B6 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
A473 201, 302 AR 308/308H/308L, OK 61.25 Autrod/Tigrod 308H/308L/308LSi 202 AR 308/308H, OK 61.25 Autrod/Tigrod 308H 304, 308 AR 308/308H/308L, OK 61.25 Autrod/Tigrod 308H/308L/308LSi 304L AR 308L Autrod/Tigrod 308L/308LSi 305 AR 308/308H/309/309H, OK 61.25 Autrod/Tigrod 308H 309 AR 309/309H 309S AR 309L Autrod/Tigrod 309L/309Si 310, 310S OK 67.13 Autrod/Tigrod 310 316 AR 316/316H/316L Autrod/Tigrod 316L/316LSi 316L AR 316L Autrod/Tigrod 316L/316LSi 317 Autrod/Tigrod 317L 321, 347, 348 OK 61.8161.85 Autrod/Tigrod 347/347Si 405 C OK 68.17 Autrod/Tigrod 410NiMo 429 AR 309L, OK 67.13 Autrod/Tigrod 309L/309Si/310 430 Autrod/Tigrod 430Ti/430LNb S31254 250 max OK NiCrMo-3 Autrod/Tigrod NiCrMo-3 S32550, S32760, S32950 OK 67.55/67.53 Autrod/Tigrod 2209 501A, 501B D AA 8018-B8 502 C AA 8018-B6/8018-B6L ER80S-B6
— 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 FCAW (gas-shielded flux-cored) filler
SB B6
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