Welding Preheat Interpass: austenitic_SS
Minimum preheat and maximum interpass temperatures for welding per AWS D1.1, ASME BPVC, ASME B31.3, and EN 1011. Covers carbon steels (AWS categories A/B), HSLA (category C, HPS 70W/100W), quenched and tempered (category D), Cr-Mo alloys (P5/P11/P22/P91/P4/P5B), austenitic stainless (P8), duplex stainless (P10H), nickel alloys, aluminum, titanium, and copper. Each record includes base metal group, thickness range, carbon equivalent, preheat/interpass temperatures in both F and C, PWHT requirements, hydrogen control level, and welding process notes. 46 records.
| base metal group | AWS group number | PWHT required | base metal examples | hydrogen control | interpass max C (degC) | interpass max F (degF) | preheat min C (degC) | preheat min F (degF) | record key | thickness range in | thickness range mm | welding process notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| austenitic_SS | P8 | no | ASTM A312 TP304/316/321/347; A240 304/316L; A182 F304/316 | standard | 177 | 350 | 0 | 32 | P8#any | any | any | No preheat required except to remove moisture/chill below 32°F; max interpass 350°F to limit sensitization and preserve corrosion resistance; use low-carbon (L) or stabilized grades for service |
This is a sample. Search the full welding preheat interpass dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE