Alloy 718 Specimens | Product form | HT Condition | Heat treatment detail |
1 × S1 | RB | ST Standard | 1035˚C–2 h AC to RT |
1 × S2 | RB | STA Standard (Oilfield Spec. API 6A718) | 1035˚C–2 h AC/788˚C–7 h AC to RT |
1 × S3 | RB | ST Non-Standard | 1250˚C–2 h WQ |
2 × S4 | RB | STA Non-Standard | 1250˚C–2 h WQ/788˚C–16 and 25 h WQ to RT |
1 × S5 | RB | STA Standard | 1035˚C–1 h AC, then 718˚C–8 h, then FC at 0.433˚C/min–0.933˚C/min to 621˚C, and then hold for 8 h, AC to RT |
4 × S6 | Bolt (Φ 22 mm) | Standard (Oilfield Spec. API 6A718) | 1035˚C–2 h AC/788˚C–7 h AC to RT |
4 × S7 | Bolt (Φ 28 mm) | As-Received from subsea (Oilfield Spec. API 6A718) | 1035˚C–2 h AC/788˚C–7 h AC to RT |