S9074-AQ-GIB-010/248 Rev 1
Table 7-1. Grouping of Base Materials (Welding) 1/ - Continued
NOTES:
1/ If material of similar chemistry and mechanical properties is not listed under an S-group, it may be considered as a part of a group upon approval. S-23 materials are as stated; other alloys shall be approved as special welds by NAVSEA. Also, for materials to be added to S-1 or S-2, the carbon equivalent shall be calculated for minimum preheat purposes as required by the applicable fabrication document (e.g., NAVSEA S9074-AR-GIB-010/278, table 6-2.1).
2/ Si = 0.40 maximum, Al = 0.15 maximum, and Cb + Ta = 3.15 - 4.50.
3/ Procedure qualifications for these materials shall be submitted to NAVSEA for approval.
4/ With additional requirements for toughness, composition, heat treatment, and testing for absence of intermetallic phases (e.g., ASTM A923, Test Method B) imposed by the component specification. 5/ Welding procedure and personnel qualification for S-11F propulsion shafting and rudder stocks shall be in accordance with MIL-STD-2191; otherwise, qualification shall be in accordance with the requirements of this document. 6/ Qualification requirements shall be as approved by NAVSEA. 7/ See 4-7.1.a(4). 8/ Welding procedures for S-23 materials shall identify each specific application for which the procedure will be used. Applications shall be limited to those specified by the fabrication document for S-23 materials or other applications specifically approved by NAVSEA (see 4-3.1.1). 9/ Welding of HSLA-65 is only permitted where the fabrication document lists specific electrode types for this specific steel; otherwise, welding requires NAVSEA approval. 10/ With additional toughness, composition, melting, processing and other controls as approved by NAVSEA. Toughness testing for welding procedure qualification is required as approved by NAVSEA.
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