Inconel 625 Flanges Manufacturer & Supplier

Midland Alloys Inc. is a trusted Inconel 625 flanges manufacturer based in India. Our flanges are crafted from a high-performance nickel-chromium-molybdenum alloy, known for strength, resistance to seawater corrosion, and durability in extreme environments. Inconel 625 flanges are widely utilized in marine hardware, chemical processing, offshore oil platforms, aerospace systems, and nuclear reactors. As a leading inconel Alloy 625 flanges supplier, we use advanced production systems and global logistics to serve critical industries worldwide.

Inconel 625 Flanges Overview

Inconel 625 flanges are made from a nickel-based alloy with high amounts of chromium, molybdenum, and niobium. This unique Inconel 625 flange material offers great fatigue strength, resists pitting and crevice corrosion especially in seawater and harsh chemicals. These flanges meet key industry standards such as ASTM B564, UNS N06625, and ASME SB564.

These flanges withstand extreme temperatures—from cryogenic conditions up to 980°C. Available in different types like Inconel 625 weld neck flange, blind, slip-on, socket weld, threaded, and lap joint. These alloy 625 flanges are rated between class 150# to 2500#.

They are typically available in sizes from ½” to 24” in diameter, following ANSI/ASME B16.5 and B16.47 inconel 625 flange specifications. Custom sizes are also available to meet specific project needs.

Benefits of Inconel 625 Flanges

Inconel 625 flanges offer long-lasting strength and stability in demanding environments. Their unique alloy mix handles pressure, heat, and corrosion. That makes alloy 625 flanges a trusted choice across industries.

Seawater & Chemical Resistance
Resist seawater and harsh chemicals without breaking down.
High-Temperature Strength
Hold mechanical strength and creep resistance at high temperatures.
Fatigue Performance
Provides great fatigue strength in systems with thermal and pressure cycles.
Corrosion Protection
Withstands pitting, crevice corrosion, and chloride cracking.
Dimensional Stability
These inconel 625 flanges keep shape and size steady under pressure and heat.
Reliable in Harsh Environments
Perform reliably in extreme marine, chemical, and offshore conditions.

Inconel 625 Flanges Standard Size & Specification

Knowing the right specifications of Inconel 625 flanges ensures proper fit, safety, and reliable performance. It helps in accurate selection for pressure handling and compatibility with connected systems.

Types of Inconel 625 Flanges

Inconel 625 flanges come in various types to suit different pipe connections and pressure needs. Each type serves a specific function depending on the installation style, strength, and sealing method required.

Manufacturing Types

SORF (Slip-On Raised Face)

Slides over the pipe and gets welded for easy installation in low-pressure systems.
BLRF (Blind Raised Face)

Closes off pipe ends; used for testing or sealing flow in a system.
SWRF (Socket Weld Raised Face)

Pipe fits into a recessed area and is welded around the edge. Ideal for small-bore, high-pressure lines.
WNRF (Weld Neck Raised Face)

Has a long, tapered hub and welds to the pipe for strong, leak-proof joints under high pressure.

Face Forms

Raised Face (RF)

The most common type has a raised surface that improves gasket sealing in medium to high pressure.
Ring Type Joint (RTJ)

Uses a metal ring for sealing and works well in high-pressure, high-temperature services.
Flat Face (FF)

Flat surface flange used with cast iron or low-pressure piping where full face gasket is needed.
Lap-Joint Face (LJF)

Used with stub ends and are easy to align and install. Good for systems that need frequent dismantling.

Contact Midland Alloys Inc. for Your Inconel 625 Flanges Needs

Contact us today to discuss how Inconel 625 Flanges can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.

Technical Details & Delivery Condition

Chemical Composition of Inconel 625 Flanges

The chemical makeup of Inconel 625 flanges plays a key role in their strength and corrosion resistance. With high nickel, chromium, and molybdenum content, this alloy performs well in harsh and high-temperature environments.

Grade	C	Mn	Si	S	Cu	Fe	Ni	Cr
Inconel 625	0.10 max	0.50 max	0.50 max	0.015 max	–	5.0 max	58.0 min	20.0 – 23.0

Mechanical & Physical Properties of Alloy 625 Flanges

Alloy 625 flanges offer a strong combination of mechanical strength and thermal stability. The mechanical properties include tensile strength, yield strength, elongation, and hardness—key factors for performance under pressure and heat.

Element	Density	Melting Point	Tensile Strength	Yield Strength (0.2% Offset)	Elongation
Inconel 625	8.4 g/cm³	1350 °C (2460 °F)	Psi – 1,35,000 , MPa – 930	Psi – 75,000 , MPa – 517	42.5 %

Equivalent Grades Of Inconel 625 Flanges

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
Inconel 625	2.4856	N06625	NCF 625	NA 21	–	NC22DNB4M	NiCr22Mo9Nb

Inconel 625 Flanges Dimension

Size

Hub at Base Dia.

Raised Face Dia.

Length Thru Hub

Hub at Bevel Dia.

Bore And Dia.

Socket Depth

Fillet Radius

Loose (Lap Joint)

Weld Neck (WN)

SORF, NPT, SWRF

SORF, SWRF

Loose (Lap Joint)

3/4

3-7/8

1/2

1-1/2

1-11/16

5/8

2-1/16

5/8

1.05

1.11

1.09

7/16

1/8

1/2

3-1/2

7/16

1-3/16

1-3/8

5/8

1-7/8

5/8

.84

.90

.88

3/8

1/8

4-1/4

9/16

1-15/16

11/16

2-3/16

11/16

1.32

1.38

1.36

1/2

1/8

1-1/2

11/16

2-9/16

2-7/8

7/8

2-7/16

7/8

1.90

1.97

1.95

5/8

1/4

1-1/4

4-5/8

5/8

2-5/16

2-1/2

13/16

2-1/4

13/16

1.66

1.72

1.70

9/16

3/16

3/4

3-1/16

3-5/8

2-1/2

2.38

2.46

2.44

11/16

5/16

7-1/2

15/16

4-1/4

1-3/16

2-3/4

1-3/16

3.50

3.60

3.57

13/16

3/8

2-1/2

7/8

3-9/16

4-1/8

1-1/8

2-3/4

1-1/8

2.88

2.97

2.94

3/4

5/16

3-1/2

8-1/2

15/16

4-13/16

5-1/2

1-1/4

2-13/16

1-1/4

4.10

4.07

7/8

3/8

15/16

6-7/16

7.5/16

1-7/16

3-1/2

1-7/16

5.56

5.69

5.66

15/16

7/16

15/16

5-5/16

6-3/16

1-5/16

4.50

4.60

4.57

15/16

7/16

7-9/16

8-1/2

1-9/16

3-1/2

1-9/16

6.63

6.75

6.72

1-1/16

1/2

1-3/16

12-3/4

1-15/16

10.75

10.92

10.88

1-5/16

1/2

13-1/2

1-1/8

9-11/16

10-5/8

1-3/4

8.63

8.75

8.72

1-1/4

1/2

1-1/4

14-3/8

2-3/16

4-1/2

2-3/16

12.75

12.92

12.88

1-9/16

1/2

23-1/2

1-7/16

18-1/2

3-7/16

2-1/2

16.19

16.16

1-3/4

1/2

1-3/8

15-3/4

16-1/4

3-1/8

2-1/4

14.18

14.14

1-5/8

1/2

1-9/16

19-7/8

3-13/16

5-1/2

2-11/16

18.20

18.18

1-15/16

1/2

1-7/8

26-1/8

27-1/4

4-3/8

3-1/4

24.25

2-1/2

1/2

27-1/2

1-11/16

4-1/16

5-11/16

2-7/8

20.25

20.20

2-1/8

1/2

Sizes of Inconel 625 Flanges

Flange Type	Available Sizes
Inconel 625 Weld Neck Flange	1/2″ (15 NB) to 48″ (1200 NB)
Inconel 625 Slip On Flange	1/2″ NB to 24″ NB
Inconel 625 Blind Flange	1/2″ NB to 24″ NB
Inconel 625 Socket Weld Flange	1/2″ NB to 12″ NB
Inconel 625 Threaded Flange	1/2″ NB to 12″ NB
Inconel 625 Lap Joint Flange	1/2″ NB to 24″ NB
Inconel 625 Ring Type Joint Flange (RTJ)	1/2″ NB to 24″ NB
Inconel 625 Orifice Flange	1/2″ NB to 24″ NB

Inconel Flanges Grades We Offer

Inconel Flanges

Inconel 600 Flanges

Inconel 625 Flanges

Inconel 718 Flanges

Manufacturing Process of Inconel 625 Flanges

Plate

Shear

Press

Inspection

Lathe

Drilling

Cleaning

Flange

Inspection

Analytic

Marking

Packing & Shipping

Industrial Applications

Inconel 625 flanges are used in many tough environments. In aerospace, they handle heat and stress in engine parts. In marine systems, they resist seawater corrosion. Chemical plants and power stations use them for their strength and stability. The oil and gas industry uses these flanges for high-pressure flow lines. They are also used in food and pharma plants where clean, durable materials are necessary.

Offshore Industry

Nuclear Industries

Refineries

Ship Building

Aerospace

Pharmaceutical

Inconel 625 Flanges Certifications & Compliance

All our inconel 625 flanges meet global standards like ASTM B564, ASME SB564, and follow EN 10204 3.1 and DIN/ISO norms. Production process is conducted under ISO 9001:2015 certified system to ensure quality, reliability, and traceability. These flanges also meet industry-specific requirements such as NACE MR0175, PED 2014/68/EU, and AD 2000 W0, based on its application. Quality checks include raw material tests, size checks, NDT reports, and third-party review. Each flange is fully traceable and goes through final inspection before shipping to ensure it meets international expectations.

Why Choose Us?

Midland Alloys Inc offers reliable quality and on-time delivery across a global export network. We offer custom lengths, finishes, and coil forms to match your exact needs. Every product comes with full material traceability and documents. Our team is available 24/7 to assist with orders, queries, or technical support. With strict quality checks and flexible supply, we ensure to meet specific project needs on time.

Testing & Packaging

We test every Inconel 625 flange using methods like PMI, ultrasonic (UT), hydro, and visual checks. These tests help confirm strength, material grade, and surface quality. For safe delivery, we pack flanges in strong wooden boxes with plastic wrapping and export-ready labels. Each package is clearly marked for easy handling and tracking during transport.

FAQs

What is the maximum temperature Inconel 625 flanges can withstand?

Up to 980°C. These inconel 625 flanges maintain strength and resist oxidation at high heat.

Can Inconel 625 flanges be welded easily?

Yes. Inconel 625 flanges offer good weldability without cracking or loss of corrosion resistance.

How does Inconel 625 compare to stainless steel in flanges?

Inconel 625 flanges has better heat, corrosion, and pressure resistance than most stainless steel flanges.

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