Dear All

Is this Inconel Alloy 625 (UNS N06625) forgings can be used in a Div 2 pressure vessel.

One of our client needs solid alloy nozzle for sizes up to 4". The prefered material is Inconel 625. But i cant find the same in ASME Sec II Part D Div 2 materials.

Please Help...!!!!



Regards

Vijeesh

There´s a Code case 2468, however, for the 2001 edition through the 2004 edition, 2006 addenda only. For the current edition the material is neither listed nor there is a CC.

Michael

This is the CC, still in force
CASES OF ASME BOILER AND PRESSURE VESSEL CODE 2468
Approval Date: January 26, 2009
Code Cases will remain available for use until annulled
by the applicable Standards Committee.
Case 2468
Use of Nickel-Chromium-Molybdenum-Columbium
Alloy UNS N06625
Section VIII, Division 2
Inquiry: Under what conditions may UNS N06625
SB-443, Grade 1 (annealed) plate, sheet, and strip, SB-444
Grade 1 (annealed) pipe and tube, SB-446 Grade 1
(annealed) rod and bar, and SB-564 be used in Section
VIII, Division 2 (2001 edition through 2004 edition, 2006
addenda only)?
Reply: It is the opinion of the Committee that UNS
N06625 SB-443 Grade 1 (annealed) plate, sheet, and strip,
The Committee’s function is to establish rules of safety, relating only to pressure integrity, governing the construction of boilers, pressure vessels, transport tanks and
nuclear components, and inservice inspection for pressure integrity of nuclear components and transport tanks, and to interpret these rules when questions arise
regarding their intent. This Code does not address other safety issues relating to the construction of boilers, pressure vessels, transport tanks and nuclear components,
and the inservice inspection of nuclear components and transport tanks. The user of the Code should refer to other pertinent codes, standards, laws, regulations or
other relevant documents.
1 (2468)
SB-444 Grade 1 (annealed) pipe and tube, SB-446 Grade 1
(annealed) rod and bar, and SB-564 may be used for welded
construction in Section VIII, Division 2 for the 2001 edition
through the 2004 edition, 2006 addenda, provided the following
additional requirements are met:
(a) The design stress intensity values, Sm, shall be those
listed in Tables 1 and 1M. The maximum use temperature
is 800°F (427°C).
(b) For external pressure design, the requirements of
Fig. NFN-17 of Section II, Part D shall apply.
(c) This Case number shall be shown on the
Manufacturer’s Data Report.
Copyright 2010 by the American Society of Mechanical Engineers.
No reproduction