Welding Preheat Interpass: quenched_tempered
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 | carbon equivalent CE max | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| quenched_tempered | D | no | A514 / A517 (all grades T1 A-F), A709 HPS100W, A710 | 0.5 | low_H2_required | 205 | 400 | 79 | 175 | D#1-1/2_to_2-1/2 | 1-1/2_to_2-1/2 | 38_to_64 | Q&T steels: max interpass 400°F strictly enforced; use E11018 or matching filler; no interpass calc basis — max preheat = interpass max |
| quenched_tempered | D | no | A514 / A517 (all grades T1 A-F), A709 HPS100W, A710 | 0.5 | low_H2_required | 205 | 400 | 52 | 125 | D#3/4_to_1-1/2 | 3/4_to_1-1/2 | 19_to_38 | Q&T steels: max interpass 400°F strictly enforced; use E11018 or matching filler; no interpass calc basis — max preheat = interpass max |
| quenched_tempered | D | no | A514 / A517 (all grades T1 A-F), A709 HPS100W, A710 | 0.5 | low_H2_required | 205 | 400 | 107 | 225 | D#over_2-1/2 | over_2-1/2 | over_64 | Q&T steels: max interpass 400°F strictly enforced; use E11018 or matching filler; no interpass calc basis — max preheat = interpass max |
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