NICKEL FITTINGS

Work Scope

The table shown above addresses only the WP Grade wrought buttweld fittings produced in accordance with ASME B16.9. The permissible raw materials and manufacturing operations listed in B/SB366 allow producing forged threaded and socket weld fittings in accordance with ASME B16.11.

Specifications B/SB366 cover all the material grades listed above. Alloy 20 is the only grade listed above that is covered by A/SA182. B/SB462 also covers Alloy 20 B16.11 forged fittings.

Most nickel/nickel alloy specifications especially in pipe and tube refer only to the uns number for material identification. Classes and Grades are occasionally used to identify options for items such as NDT, heat treatment or different methods employed when welding with filler metal such as single welded or double welded. these options do not result in an additional uns number in the nickel materials.

Grades/Classes/Identification Symbols are shown in this table only when they are used for material identification. Buttweld Fittings under B/SB366 have the same suffix class marking requirements (S,W,WX,WU and CR) as A/SA403.

Specification B/SB564 permits manufacture of all the grades listed above except for Nickel 201 and Alloy 20.
Refer to Flowones’ forged fitting web page for more details.

Review of Procurement Requirements:

Specification B/SB366 offers suggested requirements for purchasing requirements including but not limited to the following:

1) Quantities to be furnished.
2) Description of fitting including any non-standard dimensional requirements.
3) Alloy / UNS Designation.
4) Selection of heat treatment desired when purchaser options are offered. Refer to heat treatment requirements for Inconel 625 for an example.
5) WP fitting Class (S, W, WX or WU).
6) Any Purchaser Inspection requirements at the manufacturing facility.
7) Any purchaser requirements for providing material for Product Check Analysis.
8) Test Report requirements.
9) Any supplementary requirements desired.

Work Scope

The three specifications listed provide the requirements for manufacture of a variety of forged items, including forged fittings to industry standards such as ASME B16.11.

These alloys are primarily selected for use in high temperature and/or corrosive environments.

Incoloy alloys 800H and 800HT are utilized in high temperature services where resistance to creep and rupture is required.

Review of Procurement Requirements:

These three specifications each have their own requirement for ordering material.

A/SA182: Refers to the guidelines in Common Requirements Specification A/SA961, along with addressing any options offered in A/SA182 and any purchaser requirement for manufacturing drawings for approval.

B/SB462:
Lists these minimum suggested requirements for placement of an order:
1) Quantity.
2) Alloy name or UNS number.
3) Drawing, if required.
4) Forging sectioning, if required.
5) ASTM Specification and year of issue.
6) Any purchaser inspection requirements.
7) Any supplementary requirements.

B/SB564:
Lists these minimum suggested requirements for placement of an order:
1) Alloy name (UNS number)
2) Heat treatment condition.
3) Quantity.
4) Certification/test report requirements.
5) Purchaser requirement for Check Analysis samples, if any.
6) Purchaser source inspection requirements, if any.