ASME B16.9 Concentric Eccentric Reducer Inconel 625 Nickel Alloy
1.TYPES OF INCONEL 625 REDUCERS
Reducers connect pipes of different sizes. They are available in
eccentric or eccentric. One connecting end of the reducer is larger
than the other. Pipe reducers often have male threads on one end
and female threads on the other. Reducers come in a wide variety of
materials, sizes and types, designed to suit specific applications.
Pipelines are not of uniform size and there is requirement of
reducing or expanding the lines depending on process requirement or
availability of material. Here comes the importance of a special
pipe fitting called Reducers.
Reducers are most extensively used in piping industry to reduce or
expand the straight part of run pipe. Basically, reducers are
available in two styles:
Inconel 625 Concentric Reducers
In this type of reducers area reduction is concentric and center
line of the pipe on bigger end and smaller end remains same. The
reduction of the pipe size is achieved by decreasing the diameter
of the fitting at a constant rate over a specified length,
maintaining symmetry around the fitting. These styles are normally
used for vertical lines.
Inconel 625 Eccentric Reducers
In this style of reducer there is an offset in between the center
lines of bigger end and center line of smaller end. This offset or
eccentricity will maintain a flat side either on top or on bottom
side. The reduction of the pipe size is achieved by decreasing the
diameter of the fitting at a constant rate over a specified length,
maintaining one side of the fitting horizontally.
2.ASTM B366 Inconel 625 Reducer Useful info
INCONEL® alloy 625 (UNS N06625)
Ni 58.0, Cr 21.5 Mo 9.0, Mn 0.50 C0.10 Si 0.50 Fe 5.0
A material with excellent resistance to pitting, crevice and
corrosion cracking. Highly resistant in a wide range of organic and
mineral acids. Good high temperature strength.
- Excellent mechanical properties at both extremely low and extremely
- Outstanding resistance to pitting, crevice corrosion and
- Almost complete freedom from chloride induced stress corrosion
- High resistance to oxidation at elevated temperatures up to 1050C.
- ASTM B366 Inconel 625 Reducer have good resistance to acids, such
as nitric, phosphoric, sulfuric and hydrochloric, as well as to
alkalis makes possible the construction of thin structural parts of
high heat transfer.
- Components where exposure to sea water and high mechanical stresses
- Oil and gas production where hydrogen sulfide and elementary sulfur
exist at temperature in excess of 150C.
- Components exposed to flue gas or in flue gas desulfurization
- Flare stacks on offshore oil platforms.
- Hydrocarbon processing from tar-sand and oil-shale recovery
|Metal Type||UNS N06625|
|Bar||ASTM B446 AMS 5666 BS3076|
|Sheet||ASTM B443 AMS 5599 BS3072|
|Plate||ASTM B443 AMS 5599 BS3072|
ASTMB444 ASTM B704 AMS 5581 BS3074 GEB50TF133
ASTM B444 ASTM B704 AMS 5581 BS3074 GEB50TF133
|Fitting||ASTM B366 Din 17754|
|NA 21||All forms|
3.ASTM B564 Inconel Forged Fittings Specification
Specifications : ASTM B564 / ASTM SB 564
Type : Socketweld Fittings, Screwed-Threaded Fittings
Size : ⅛” to 4”
Class :2000 LBS, 3000 LBS, 6250 LBS, 9000 LBS
Standards : ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Inconel 625 Forged Fittings Equivalent Grade
|Inconel 625||2.4856||N06625||NCF 625||NA 21||ХН75МБТЮ||NC22DNB4M||NiCr22Mo9Nb||ЭИ602|
Inconel 625 Socketweld Forged Fittings Chemical Composition
|Grade||C||Mn||Si||P||S||Ni||Cr||Fe||Mo||Co||Al||Ti||Nb + Ta|
|Inconel 625||0.10 max||0.50 max||0.50 max||0.015 max||0.015 max||58.0 min||20.0 – 23.0||5.0 max||8.0 – 10.0||1.0 max||0.40 max||0.40 max||3.15 – 4.15|
Alloy 625 Threaded Forged Fittings Mechanical Properties
|Density||Melting Point||Tensile Strength||Yield Strength (0.2%Offset)||Elongation|
|Inconel 625||8.4 g/cm3||1350 °C (2460 °F)||Psi – 135,000 , MPa – 930||Psi – 75,000 , MPa – 517|