ASTM B366/B366M-20 - 1.10.2020
 
1. Scope

1.1 This specification covers wrought welding fittings for pressure piping, factory-made from nickel and nickel alloys. Threaded fittings as covered in ASME B16.11 are also covered by this specification. The term welding applies to butt-welding or socket-welding parts such as 45° and 90° elbows, 180° bends, caps, tees, reducers, lap-joint stub ends, and other types, as covered by ASME B16.9, ASME B16.11, MSS SP-43, MSS SP-95, and MSS SP-97.

1.1.1 Several grades of nickel and nickel alloys are included in this specification. Grades are designated with a prefix, WP or CR, based on the applicable ASME or MSS dimensional and rating standards.

1.1.2 Class WP fittings are those manufactured to the requirements of ASME B16.9, B16.11.

1.1.3 For each of the WP nickel and nickel alloy grades, several classes of fittings are covered to indicate whether seamless or welded construction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent of nondestructive examination (NDE). Table 1 is general summary of the fitting classes applicable to all WP grades of nickel and nickel alloys covered by this specification. There are no classes for the CR grades. Specific requirements are covered elsewhere.

1.2 This specification does not apply to cast welding fittings.

1.3 Optional supplementary requirements are provided for fittings where a greater degree of examination is desired. These supplementary requirements call for additional tests. When desired, one or more of these may be specified in the order.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

B536-19

Standard Specification for Nickel-Iron-Chromium-Silicon Alloys Plate, Sheet, and Strip

B675-22

Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy Welded Pipe

B434-22

Standard Specification for Nickel-Molybdenum-Chromium-Iron Alloys Plate, Sheet, and Strip

B435-22

Standard Specification for Heat and Corrosion Resistant High Temperature Alloy Plate, Sheet, and Strip

B443-19

Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloy and Nickel-Chromium-Molybdenum-Silicon Alloy Plate, Sheet, and Strip

B444-23

Standard Specification for Nickel-Chromium-Molybdenum-Niobium Alloys and Nickel-Chromium-Molybdenum-Silicon Alloy Pipe and Tube

B573-06(2016)

Standard Specification for Nickel-Molybdenum-Chromium-Iron Alloys (UNS N10003, N10242) Rod

B574-23

Standard Specification for Low-Carbon Nickel-Chromium-Molybdenum, Low-Carbon Nickel-Molybdenum-Chromium, Low-Carbon Nickel-Molybdenum-Chromium-Tantalum, Low-Carbon Nickel-Chromium-Molybdenum-Copper, and Low-Carbon Nickel-Chromium-Molybdenum-Tungsten Alloy Rod and Bar

B575-17(2023)

Standard Specification for Low-Carbon Nickel-Chromium-Molybdenum, Low-Carbon Nickel-Chromium-Molybdenum-Copper, Low-Carbon Nickel-Chromium-Molybdenum-Tantalum, Low-Carbon Nickel-Chromium-Molybdenum-Tungsten, and Low-Carbon Nickel-Molybdenum-Chromium Alloy Plate, Sheet, and Strip

B564-22

Standard Specification for Nickel Alloy Forgings

B581-17(2023)

Standard Specification for Nickel-Chromium-Iron-Molybdenum-Copper Alloy Rod

B582-07(2018)

Standard Specification for Nickel-Chromium-Iron-Molybdenum-Copper Alloy Plate, Sheet, and Strip

B572-06(2016)

Standard Specification for UNS N06002, UNS N06230, UNS N12160, and UNS R30556 Rod

B619/B619M-19(2023)

Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Pipe

B622-23

Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube

B625-21

Standard Specification for Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloy, Ni-Fe-Cr-Si Alloy, Cr-Ni-Fe-N Low-Carbon Alloy, Fe-Ni-Cr-Mo-Cu-N Alloy, and Ni-Fe-Cr-Mo-N Alloy Plate, Sheet, and Strip

B626-19

Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Tube

B649-21

Standard Specification for Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloy and Cr-Ni-Fe-N Low-Carbon Alloy Bar and Wire, Ni-Cr-Fe-Mo-N Alloy Wire, and Ni-Fe-Cr-Mo-N Alloy Bar

B673-21

Standard Specification for Nickel-Iron-Chromium-Molybdenum and Iron-Nickel-Chromium-Molybdenum-Copper Welded Pipe

B674-21

Standard Specification for Nickel-Iron-Chromium-Molybdenum and Iron-Nickel-Chromium-Molybdenum-Copper Welded Tube

B729-20

Standard Specification for Seamless Nickel-Iron-Chromium-Molybdenum-Copper Nickel Alloy Pipe and Tube

B899-21

Standard Terminology Relating to Non-ferrous Metals and Alloys

B880-14(2019)

Standard Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys

E165-09

Standard Practice for Liquid Penetrant Examination for General Industry

E1916-11(2019)

Standard Guide for Identification of Mixed Lots of Metals

B688-22

Standard Specification for Chromium-Nickel-Molybdenum-Iron Plate, Sheet, and Strip

B676-19

Standard Specification for UNS N08367 Welded Tube

B677-23

Standard Specification for Nickel-Iron-Chromium-Molybdenum, Iron-Nickel-Chromium-Molybdenum-Copper, and Nickel-Iron-Chromium-Molybdenum-Nitrogen Seamless Pipe and Tube

B690-22

Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy Seamless Pipe and Tube

B704-23

Standard Specification for Welded Nickel Alloy Tubes

B691-18

Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy (UNS N08367) Rod, Bar, and Wire

B705-17

Standard Specification for Nickel-Alloy (UNS N06625, N06219 and N08825) Welded Pipe

B710-20ae1

Standard Specification for Nickel-Iron-Chromium-Silicon Alloy Welded Pipe (Includes all amendments and changes 8/8/2023).

B409-22

Standard Specification for Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip

B423-22

Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy Seamless Pipe and Tube

B424-22

Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloys Plate, Sheet, and Strip

B425-19

Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloys Rod and Bar

B408-22

Standard Specification for Nickel-Iron-Chromium Alloy Rod and Bar

B127-19

Standard Specification for Nickel-Copper Alloy Plate, Sheet, and Strip

B167-23

Standard Specification for Nickel-Chromium-Aluminum Alloys, Nickel-Chromium-Iron Alloys, Nickel-Chromium-Cobalt-Molybdenum Alloy, Nickel-Iron-Chromium-Tungsten Alloy, and Nickel-Chromium-Molybdenum-Copper Alloy Seamless Pipe and Tube

B168-19e1

Standard Specification for Nickel-Chromium-Aluminum Alloys (UNS N06699), Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N06045, and N06696), Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617), Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674), and Nickel-Chromium-Molybdenum-Copper Alloy (UNS N06235) Plate, Sheet, and Strip (Includes all amendments and changes 10/20/2022).

B333-03(2018)

Standard Specification for Nickel-Molybdenum Alloy Plate, Sheet, and Strip

B335-03(2018)

Standard Specification for Nickel-Molybdenum Alloy Rod

B407-22

Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube

B166-19

Standard Specification for Nickel-Chromium-Aluminum Alloy, Nickel-Chromium-Iron Alloys, Nickel-Chromium-Cobalt-Molybdenum Alloy, Nickel-Iron-Chromium-Tungsten Alloy, and Nickel-Chromium-Molybdenum-Copper Alloy Rod, Bar, and Wire

B160-05(2019)

Standard Specification for Nickel Rod and Bar

B161-05(2019)

Standard Specification for Nickel Seamless Pipe and Tube

B162-99(2019)

Standard Specification for Nickel Plate, Sheet, and Strip

B163-22

Standard Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes

B164-03(2019)

Standard Specification for Nickel-Copper Alloy Rod, Bar, and Wire

B165-19

Standard Specification for Nickel-Copper Alloy Seamless Pipe and Tube

B446-23

Standard Specification for Nickel-Chromium-Molybdenum-Niobium Alloy, Nickel-Chromium-Molybdenum-Silicon Alloy, and Nickel-Chromium-Molybdenum-Tungsten Alloy Rod and Bar

B462-18e1

Standard Specification for Forged or Rolled Nickel Alloy Pipe Flanges, Forged Fittings, and Valves and Parts for Corrosive High-Temperature Service (Includes all amendments and changes 1/29/2021).

B463-21

Standard Specification for UNS N08020 Alloy Plate, Sheet, and Strip

B464/B464M-15(2020)

Standard Specification for Welded UNS N08020 Alloy Pipe

B468-10(2020)

Standard Specification for Welded UNS N08020 Alloy Tubes

B472-23

Standard Specification for Nickel Alloy Billets and Bars for Reforging

B473-07(2018)

Standard Specification for UNS N08020, UNS N08024, and UNS N08026 Nickel Alloy Bar and Wire

B511-01

Standard Specification for Nickel-Iron-Chromium-Silicon Alloy Bars and Shapes

B512-20

Standard Specification for Nickel-Chromium-Silicon Alloy Billets and Bars

B514-05(2019)

Standard Specification for Welded Nickel-Iron-Chromium Alloy Pipe

B516-18

Standard Specification for Welded Nickel-Chromium-Aluminum Alloy (UNS N06699) and Nickel-Chromium-Iron Alloy (UNS N06600, UNS N06601, UNS N06603, UNS N06025, UNS N06045, UNS N06690, and UNS N06693) Tubes

B517-19

Standard Specification for Welded Nickel-Chromium-Iron-Alloy Pipe

B515-22

Standard Specification for Welded Nickel-Iron-Chromium Alloy Tubes

B535-06(2022)

Standard Specification for Nickel-Iron-Chromium-Silicon Alloys (UNS N08330 and N08332) Seamless Pipe and Tube