1. INHERENTLY RELIABLE FACILITIES API 5CT/ISO 11960 Grades in NACE MR0175/ISO 15156 Pt. 2 John W Martin

2. Listing of API 5CT/ISO 11960 Grades 2 Group 1 −H40, J55, K55, N80 Type 1, N80Q, R95 Group 2 −M65, L80 Type 1, C90 Type 1, T95 Type 1, C110* Group 3 −P110 Group 4 −Q125 Type 1 *Not presently covered in NACE MR0175/ISO 15156 Part 2

3. Clause A.2.2.3 NACE MR0175/ISO 15156 Pt. 2 3

4. Table A.3 NACE MR0175/ISO 15156 Pt. 2 4

5. 5 N80 (Q or type 1)Q125 type 1N80Q R95 Delete year reference (2001) Note b can be deleted

6. Future Work/Ballot 6 How to deal with API 5CT/ISO 11960 Grade C110? −This is the closest available. Is it adequate? Can the Grade be listed? Properties of API 5CT/ISO 11960 Grade C110:- −Chemistry – C 0.35 max.; Cr 0.4 to 1.5; Mo 0.25 to 1.00 (e.g. UNS G41350 C 0.33 to 0.38; Cr 0.80 to 1.10; Mo 0.15 to 0.25) −Heat Treatment – Quenched and Tempered (649°C; 1200°F min.) −Yield Strength (range) – 758 to 828 MPa (110 to 120ksi) −Maximum Hardness – 30 HRC