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Inconel Forged Fittings

Inconel Forged Fittings Specification

This premium material for severely corrosive environments exhibits resistance to alkaline solutions, stress-corrosion cracking, and pitting. Inconel forged fittings are available in various compositions, but their standard mix includes nickel, chromium, molybdenum, and niobium

  625 600 800 825
Molybdenum content Higher (8-10%), also has tantalum - - Lower (3.5%)
Corrosion resistance Highest Lower Lower High
Strength in MPa 880 655 536 720

These high-performance products are available in different shapes and sizes to fulfill application-specific requirements. Marine applications like undersea communication cables, propeller blades, and propulsion motors frequently use an Inconel 625 Union.

We are alloy 625 threaded elbow supplier in India


Specification of inconel forged fittings

Specifications Size Class
ASTM B564, ASME SB564 1/8" - 4" NB 2000 LBS, 6000 LBS, 3000 LBS, 9000 LBS
Standard Process Types
ASME 16.11, BS 3799, MSS SP-79, 97, 83, 95 Forging, socket, threaded, screwed Forged fitting, socket weld fittings, threaded fittings
Connection Surface treatment Tolerance
Compressed, welding Customized 0.01- +/-0.005mm

To get the best longevity of inconel 800 forged fittings in high and low-temperature, please connect with us

What are the benefits of using Inconel Forged Fittings over other materials in industrial applications?

Inconel socket weld fittings extend numerous industrial benefits in the pharmaceutical, chemical processing, and nuclear engineering sectors:

  • These components are hardy when faced with harsh chemicals like hydrochloric acid, chlorinated solvents, and seawater.
  • Show excellent mechanical strength (e.g., a tensile strength over 800 MPa compared to 505 MPa of stainless steel 304)
  • Possesses a high melting point of 1400°C or 2550°F
  • Has good oxidation resistance, but less hardy than Hastelloy amid reducing corrosion
  • Inconel 625 forged fittingstolerate high temperatures (cryogenic to 1800°F), which is comparable to stainless steel 330

Inconel, a trade name owned by Special Metals Corp., an American company, is essentially the same as an Alloy 625 socket weld elbow. Customers can acquire diverse fittings like tees, nipples, couplings, etc.

Types of inconel socket weld fittings


Inconel 600 Forged Fittings

Inconel 600 Forged Fittings

Alloy 625 Socket Weld Fittings

Alloy 625 Socket Weld Fittings

Inconel UNS N08800 Forged Fittings

Inconel UNS N08800 Forged Fittings

1.4876 coupling

1.4876 coupling

We use advanced techniques to achieve high strength and toughness of alloy 625 socket weld fittings

What are the typical tensile and Charpy impact testing procedures used to evaluate the performance of Inconel Forged Fittings?

The Charpy impact test is a high-strain procedure to ascertain the impact energy and toughness of Inconel threaded fittings. For instance, the impact strength at 1100°F is around 75 ft-lb under 101.7 Joules.

Manufacturers also subject an Inconel 825 coupling to tensile strength testing. The basic procedure is destructive and uses a universal testing machine.

We summarise the test results of Inconel 600 socket weld fittings in the Mill Test Certificate, which also offers heat traceability to the clients.

Chemical composition of inconel threaded fittings


Grade C Mn Si S Cu Fe Ni Cr
Inconel 600 0.15 max 1.00 max 0.50 max 0.015 max 0.50 max 6.00 - 10.00 72.00 min 14.00 - 17.00
Inconel 601 0.10 max 1.0 max 0.5 max 1.0 max Balance 58.0 - 63.0 72.00 min 21.0 - 25.0
Inconel 625 0.10 max 0.50 max 0.50 max 0.015 max - 5.0 max 58.0 min 20.0 - 23.0
Inconel 718 0.08 max 0.35 max 0.35 max 0.015 max 0.30 max - 50.00 - 55.00 17.00 - 21.00
To ensure that you select the right inconel 600 union for your application, check our specification table

Mechanical properties of alloy 600 socket weld fitting


Grade Density Melting point Tensile strength Yield strength(0.2% offset) Elongation
Inconel 600 8.47 g/cm3 1413°C(2580°F) PSi-95000, MPa-655 PSi-45000, MPa-310 40%
Inconel 601 8.1 g/cm3 1411°C(2571°F) PSi-80000, MPa-550 PSi-30000, MPa-205 30%
Inconel 625 8.4 g/cm3 1350°C(2460°F) PSi-1,35000, MPa-930 PSi-75000, MPa-517 42.5%
Inconel 718 8.2 g/cm3 1350°C(2460°F) PSi-1,35000, MPa-930 PSi-75000, MPa-482 45%
To view the technical specifications of inconel 825 socket weld fittings, please visit our website for detailed information

Equivalent grade of inconel 625 forged fitting


STANDARD WNR UNS JIS BS AFNOR EN
Inconel 600 2.4816 N06600 NCF600 NA13 NC15FE11M NiCr15Fe
Inconel 601 2.4851 N06601 NCF601 NA49 NC23FeA NiCr23Fe
Inconel 625 2.4856 N06625 NCF625 NA21 NC22DNB4M NiCr22MOgNb

Applications of inconel 625 forged fitting


  • → Oil and gas industries
  • → Equipments
  • → Food processing industries
  • → Power industries
  • → Pipeline
  • → Paper industries
  • → Ship building industries
  • → Chemical industries
  • → Cement industries

Manufacturing standard of inconel threaded fitting


ASME B16.11 Socket weld, threaded forged fittings
ASME B16.9 Factory-made wrought buttweld fittings
MSS SP-43 Fabricated butt-welding fittings for corrosion resistant applications
BS3799 Specification for pipe fittings, socket-weld for the petroleum industry
ASTM B564 – ASME SB564 Standard specification for wrought austenitic pipe fittings
MSS SP-95 Swage nipples, bull plugs

Testing methods of inconel socket weld fitting


  • → Mechanical testing ( tensile of area )
  • → Positive material identification (PMI testing)
  • → Hardness test
  • → Flattening test
  • → Chemical analysis (spectro analysis)
  • → Micro / macro test
  • → Flaring test
  • → Pitting resistance test
  • → Intergranular corrosion test (IGC)

Thickenss chart of inconel socket weld fitting


OD NPS (inches) Inconel 625 union Inconel 825 cross (straight) Inconel coupling (Straight) Inconel 600 forged fittings
(mm) (inches) Length (inch) Center to end (inch) Center to end (inch) Lap diameter (inch) Short length (inch) Long length (inch)
33.4 1.315 1 1 1/2 1 1/2 1 1/2 2 2 4
26.7 1.050 3/4 1 - 1 1/8 1 11/16 2 3
42.2 1.660 1 1/4 1 1/2 1 7/8 1 7/8 2 1/2 2 4
60.3 2.375 2 1 1/2 2 1/2 2 1/2 3 5/8 2 1/2 6
48.3 1.900 1 1/2 1 1/2 2 1/4 2 1/4 2 7/8 2 4
73.0 2.875 2 1/2 1 1/2 3 3 4 1/8 2 1/2 6
101.6 4.000 3 1/2 2 1/2 3 3/4 3 3/4 5 1/2 3 6
88.9 3.500 3 2 3 3/8 3 3/8 5 2 1/2 6
114.3 4.500 4 2 1/2 4 1/8 4 1/8 6 3/16 3 6
168.3 6.625 6 3 1/2 5 5/8 5 5/8 8 1/2 3 1/2 8
141.3 5.563 5 3 4 7/8 4 7/8 7 5/16 3 8
219.1 8.625 8 4 7 7 10 5/8 4 8
323.9 12.750 12 6 10 10 15 6 10
273.1 10.750 10 5 8 1/2 8 1/2 12 3/4 5 10
21.3 0.840 1/2 1 - 1 1 3/8 2 3