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

Specification for Nickel-Iron-Chromium-Silicon Alloys (UNS N08330 and N08332) Plate, Sheet, and Strip

B675

Specification for UNS N08367 Welded Pipe

B434

Specification for Nickel-Molybdenum-Chromium-Iron Alloys (UNS N10003, UNS N10242) Plate, Sheet, and Strip

B435

Specification for UNS N06002, UNS N06230, UNS N12160, and UNS R30556 Plate, Sheet, and Strip

B443

Specification for Nickel-Chromium-Molybdenum-Columbium Alloy(UNS N06625) and Nickel-Chromium-Molybdenum-SiliconAlloy (UNS N06219) Plate, Sheet, and Strip

B444

Specification for Nickel-Chromium-Molybdenum-Columbium Alloys (UNS N06625 and UNS N06852) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219) Pipe and Tube

B573

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

B574

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

B575

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

Specification for Nickel Alloy Forgings

B581

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

B582

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

B572

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

B619/B619M

Specification for Welded Nickel and Nickel-Cobalt Alloy Pipe

B622

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

B625

Specification for UNS N08925, UNS N08031, UNS N08932, UNS N08926, UNS N08354, UNS N08830, and UNS R20033 Plate, Sheet, and Strip

B626

Specification for Welded Nickel and Nickel-Cobalt Alloy Tube

B649

Specification for Ni-Fe-Cr-Mo-Cu-N Low-Carbon Alloys (UNS N08925, UNS N08031, UNS N08354, and UNS N08926), and Cr-Ni-Fe-N Low-Carbon Alloy (UNS R20033) Bar and Wire, and Ni-Cr-Fe-Mo-N Alloy (UNS N08936) Wire

B673

Specification for UNS N08925, UNS N08354, and UNS N08926 Welded Pipe

B674

Specification for UNS N08925, UNS N08354, and UNS N08926 Welded Tube

B729

Specification for Seamless UNS N08020, UNS N08026, and UNS N08024 Nickel-Alloy Pipe and Tube

B899

Terminology Relating to Non-ferrous Metals and Alloys

B880

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

E165

Practice for Liquid Penetrant Examination for General Industry

E1916

Guide for Identification of Mixed Lots of Metals

B688

Specification for Chromium-Nickel-Molybdenum-Iron (UNS N08366 and UNS N08367) Plate, Sheet, and Strip

B676

Specification for UNS N08367 Welded Tube

B677

Specification for UNS N08925, UNS N08354, and UNS N08926 Seamless Pipe and Tube

B690

Specification for Iron-Nickel-Chromium-Molybdenum Alloys (UNS N08366 and UNS N08367) Seamless Pipe and Tube

B704

Specification for Welded UNS N06625, UNS N06219 and UNS N08825 Alloy Tubes

B691

Specification for Iron-Nickel-Chromium-Molybdenum Alloys (UNS N08366 and UNS N08367) Rod, Bar, and Wire

B705

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

B710

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

B409

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

B423

Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825, N08221, and N06845) Seamless Pipe and Tube

B424

Specification for Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825, UNS N08221, and UNS N06845) Plate, Sheet, and Strip

B425

Specification for Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825, UNS N08221, and UNS N06845) Rod and Bar

B408

Specification for Nickel-Iron-Chromium Alloy Rod and Bar

B127

Specification for Nickel-Copper Alloy (UNS N04400) Plate, Sheet, and Strip

B167

Specification for Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N06045, and N06696), Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617), and Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674) Seamless Pipe and Tube

B168

Specification for Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N06045, and N06696), Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617), and Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674) Plate, Sheet, and Strip

B333

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

B335

Specification for Nickel-Molybdenum Alloy Rod

B407

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

B166

Specification for Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N06045, and N06696), Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617), and Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674) Rod, Bar, and Wire

B160

Specification for Nickel Rod and Bar

B161

Specification for Nickel Seamless Pipe and Tube

B162

Specification for Nickel Plate, Sheet, and Strip

B163

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

B164

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

B165

Specification for Nickel-Copper Alloy (UNS N04400) Seamless Pipe and Tube

B446

Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625), Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219), and Nickel-Chromium-Molybdenum-Tungsten Alloy (UNS N06650) Rod and Bar

B462

Specification for Forged or Rolled UNS N06030, UNS N06022, UNS N06035, UNS N06200, UNS N06059, UNS N10362, UNS N06686, UNS N08020, UNS N08367, UNS N10276, UNS N10665, UNS N10675, UNS N10629, UNS N08031, UNS N06045, UNS N06025, UNS R20033 Alloy Pipe Flanges, Forged Fittings

B463

Specification for UNS N08020 Alloy Plate, Sheet, and Strip

B464/B464M

Specification for Welded UNS N08020 Alloy Pipe

B468

Specification for Welded UNS N08020 Alloy Tubes

B472

Specification for Nickel Alloy Billets and Bars for Reforging

B473

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

B511

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

B512

Specification for Nickel-Chromium-Silicon Alloy (UNS N08330) Billets and Bars

B514

Specification for Welded Nickel-Iron-Chromium Alloy Pipe

B516

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

B517

Specification for Welded Nickel-Chromium-Iron-Alloy (UNS N06600, UNS N06603, UNS N06025, and UNS N06045) Pipe

B515

Specification for Welded UNS N08120, UNS N08800, UNS N08810, and UNS N08811 Alloy Tubes

B535

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