AWS NAVSAE B2.1-1-316 pdf free download

AWS NAVSAE B2.1-1-316 pdf free download.Standard Welding Procedure Specification for Naval Applications (SWPS-N) for Argon Plus 2% Oxygen Shielded Gas Metal Arc Welding (Spray Transfer Mode) of Carbon Steel (S-1), 1/8 inch [3 mm] through 1-1/2 inch [38 mm] Thick, MIL .-70S-3, in the As-Welded or PWHT Condition, Primarily Pipe for Naval Applications.
Supplementary Instructions. To adapt this SWPS-N to a specific application, a user may issue supplementary instruc- tions. Such instructions may consist of tighter fit-up tolerances, higher minimum preheat temperature, or any other instruc- tions necessary to produce a weldment that meets the requirements of the fabrication document(s). These instructions shall not be less restrictive than provided in the SWPS-N. Nomenclature Caution. The base material S numbers appearing in this standard are base material groupings used for qualification purposes in NAVSEA Technical Publication S9074-AQ-GIB-010/248 just as M numbers in AWS B2. I/B2M and P numbers in the ASME Pressure Vessel Code are material groupings. The S numbers in this standard are different from and not to be confused with the S number nomenclature that has been used in the ASME Pressure Vessel Code. The P number joint designations and P piping classifications in this standard have no association with the ASME P number material groupings. The A number suffix letter fller metal grouping in this standard is that included in NAVSEA Technical Publication S9074-AQ-GIB-010/248 and should not be confused with the A number weld metal groupings included in AWS B2.1/B2. 1M or in ASME Boiler and Pressure Vessel Code, Section lX, Welding, Brazing, and Fusing Qualifications. Standard Units of Measure. This standard makes use of both U.S. Customary Units and the International System of Units (SI). The latter are shown within brackets ([ ]) or in appropriate columns in tables and figures. The measurements may not be exact equivalents; therefore, each system must be used independently.
Work performed in accordance with this standard may involve the use of materials that have been deemed hazardous, and may involve operations or equipment that may cause injury or death. This standard does not purport to address all safety and health risks that may be encountered. The user of this standard should establish an appropriate safety program to address such risks as well as to meet applicable regulatory requirements. ANSI Z49.1 should be considered when develop- ing the safety program.
Welds may either be as-welded or postweld heat treated. Postweld heat treat when required by the fabrication document or contract. Heat treat at 1100°F [595°C] to 1250°F [675°C]. If heat treated, the heat treatment time shall be 1 hour per inch [25 mm] of thickness (30 minutes minimum) unless otherwise noted in the fabrication document. If heat treated, materials that have been normalized and tempered shall be postweld heat treated at a temperature at least 50°F [28°C] but no more than 100°F [56°C] below the tempering temperature found in the material certification report.
Preheat and interpass temperature may be reduced to ambient during welding provided preheat is reapplied prior to resumption of welding. At the completion of welding, preheat or interpass temperature may be reduced to ambient prior to any subsequent PWHT.AWS NAVSAE B2.1-1-316 pdf download.