Inconel 625 Flanges

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Inconel 625 Flanges Manufacturer & Supplier in India

Inconel 625 Flanges

Kalpataru Piping Solution is a trusted manufacturer, supplier, stockist, and exporter of Inconel 625 flanges, produced in full compliance with ASTM B564 / ASME SB564 and dimensional standards ASME B16.5, B16.47, and EN 1092-1. Our Alloy 625 Flanges (UNS N06625 / WNR 2.4856) are precision-forged from certified nickel-chromium-molybdenum-niobium alloy stock — the same heat-resistant, corrosion-proof material trusted in offshore platforms, chemical processing plants, marine systems, and aerospace. Our Nickel Alloy 625 Flanges also marketed as Alloy 625 Flanges are stocked across all standard flange types for immediate dispatch.

Every Inconel 625 flange we supply is traceable to its heat and lot number, backed by Mill Test Certificates (MTC) as per EN 10204 3.1, and is available for third-party inspection by TÜV, Bureau Veritas, Lloyds, and SGS. Whether you need a single weld neck flange or a bulk project quantity of blind, slip-on, or RTJ flanges, we deliver from ready stock in Mumbai, India, with global exports to 80+ countries.

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Table of Contents

What Are Inconel 625 Flanges

Inconel 625 Flanges are high-performance pipe connection components manufactured from Nickel Alloy 625 — a nickel-chromium-molybdenum alloy strengthened by niobium and tantalum additions. Unlike standard stainless steel flanges, Inconel 625 flanges derive their exceptional strength from solid-solution hardening rather than precipitation hardening, making them dimensionally stable across a wide temperature spectrum: from cryogenic (-196°C) service all the way up to 982°C (1800°F) continuous service.

The alloy’s outstanding resistance to pitting, crevice corrosion, intergranular attack, and chloride-induced stress corrosion cracking makes Inconel 625 Flanges the preferred choice wherever standard materials fail prematurely — seawater piping, FGD scrubbers, sour gas lines, and aggressive acid service environments. As a direct ASTM B564 UNS N06625 flange manufacturer based in Mumbai, Kalpataru Piping Solution maintains ready stock for same-week dispatch to clients across India and internationally.

Specification of Inconel 625 Flanges

Parameter

Details

Material Standard

ASTM B564 / ASME SB564

UNS Number

N06625

Werkstoff Nr.

2.4856

Dimensional Standards

ASME B16.5, B16.47 Series A & B, B16.48, EN 1092-1, DIN, BS 10, BS 4504

Size Range

1/2″ (15 NB) to 48″ (1200 NB)

Pressure Classes

Class 150, 300, 400, 600, 900, 1500, 2500 | PN6 to PN160

Flange Face Types

RF, FF, RTJ, LJF, MF, TG, LMF, SMF

Production Method

Forged, Heat Treated & Precision Machined

Test Certifications

MTC EN 10204 3.1 | NABL-Approved Lab | Third-Party Inspection Available

HS Code

75072000

Types of Inconel 625 Flanges

Review the diverse forms and flange types available in Inconel 625 Flanges, designed for versatile industrial connections and sealing requirements.

Chemical Composition of Inconel 625 / UNS N06625 Flanges

Element

Symbol

Min (%)

Max (%)

Nickel

Ni

58.0

Balance

Chromium

Cr

20.0

23.0

Molybdenum

Mo

8.0

10.0

Niobium + Tantalum

Nb+Ta

3.15

4.15

Iron

Fe

–

5.0

Carbon

C

–

0.10

Manganese

Mn

–

0.50

Silicon

Si

–

0.50

Sulfur

S

–

0.015

Aluminum

Al

–

0.40

Titanium

Ti

–

0.40

Cobalt

Co

–

1.0

Mechanical Properties of ASTM B564 Inconel 625 Flanges

Property

Imperial (psi)

Metric (MPa / g/cm³)

Tensile Strength (min)

135,000 psi

930 MPa

Yield Strength – 0.2% offset (min)

75,000 psi

517 MPa

Elongation (min)

30%

30%

Hardness (Brinell max)

–

≤ 220 HB

Density

0.305 lb/in³

8.44 g/cm³

Melting Range

2350–2460 °F

1290–1350 °C

Max Operating Temperature

1800 °F

982 °C

The ≤220 HB hardness rating confirms compliance with NACE MR0175/ISO 15156 requirements for sour service environments

Physical Properties of Nickel Alloy 625 Flanges

Physical Property

Value

Density

8.44 g/cm³

Melting Point Range

1290°C – 1350°C

Specific Heat Capacity

410 J/kg·K (at 21°C)

Thermal Conductivity

9.8 W/m·K (at 25°C)

Electrical Resistivity

1.29 µΩ·m

Modulus of Elasticity

207 GPa (30 × 10⁶ psi)

Coefficient of Thermal Expansion

12.8 µm/m·°C (21–538°C)

Inconel 625 / ASTM B564 UNS N06625 Equivalent Grades by International Standard

Alloy

UNS

WNR

EN

JIS

BS

AFNOR

GOST

MSRR

Inconel 625

N06625

2.4856

NiCr22Mo9Nb

NCF 625

NA 21

NC22DNB4M

ХН75МБТЮ

–

International Standards & HS Code of Alloy 625 Flanges

Learn about world standards and HS codes that streamline international trade and classification of Inconel 625 flanges.
UNS: N06625
International Specifications: WERKSTOFF Nr 2.4856
Specifications: ASTM B564/ASME SB564
Grade HS Code
Inconel 625 Flanges 75072000

Pressure Ratings & Classes of Inconel 625 Flanges

Gain clarity on pressure limits and classes to select the right Inconel 625 flanges for specific operating conditions.

Temp., °CWorking Pressures by Classes, bar
–15030040060090015002500
-29 ~ 3820.051.768.9103.4155.1258.6430.9
5019.551.768.9103.4155.1258.6430.9
10017.751.568.7103.0154.6257.6429.4
15015.850.366.8100.3150.6250.8418.2
20013.848.664.897.2145.8243.4405.4
25012.146.3061.792.7139.0231.8386.2
30010.242.957.085.7128.6214.4357.1
3259.341.455.082.6124.0206.6344.3
3508.440.353.680.4120.7201.1335.3
4753.731.742.363.495.1158.2263.9
5002.828.237.656.584.7140.9235.0
5381.416.522.133.149.682.7137.9
550–13.918.627.941.869.7116.2
3757.438.951.677.6116.5194.1323.2
600–6.68.913.319.933.255.3
625–5.16.810.315.425.742.8
650–4.76.39.514.223.639.4
4006.536.548.973.3109.8183.1304.9
4255.535.246.570.0105.1175.1291.6
4504.633.745.167.7101.4169.0281.8
575–9.412.618.928.347.278.6

Dimension Chart of Alloy 625 Slip On & Socket Weld Flanges

Dimension tables and charts ensure accurate material selection and efficient installation for every connection type.
Normal Pipe Size (NPS) Outside Daimeter (O.D.) Of Flange Diameter of Raised Face Thickness Of Flanges Hub at Base Diameter Hub at Bevel Diameter Radius of Fillet Socket Deptd Lengtd Tdru Hub Bore And Diameter
Weld Neck (WN) SORF (Slip-On) NPT (Threaded) SWRF (Socket) Loose (Lap Joint) SORF (Slip-on) SWRF (Socket) Loose (Lap Joint)
O R Q X H r Z Y Y Y W B
1/2 3-1/2 1-3/8 7/16 1-3/16 .84 1/8 3/8 1-7/8 5/8 5/8 .88 .90
3/4 3-7/8 1-11/16 1/2 1-1/2 1.05 1/8 7/16 2-1/16 5/8 5/8 1.09 1.11
1 4-1/4 2 9/16 1-15/16 1.32 1/8 1/2 2-3/16 11/16 11/16 1.36 1.38
1-1/4 4-5/8 2-1/2 5/8 2-5/16 1.66 3/16 9/16 2-1/4 13/16 13/16 1.70 1.72
1-1/2 5 2-7/8 11/16 2-9/16 1.90 1/4 5/8 2-7/16 7/8 7/8 1.95 1.97
2 6 3-5/8 3/4 3-1/16 2.38 5/16 11/16 2-1/2 1 1 2.44 2.46
2-1/2 7 4-1/8 7/8 3-9/16 2.88 5/16 3/4 2-3/4 1-1/8 1-1/8 2.94 2.97
3 7-1/2 5 15/16 4-1/4 3.50 3/8 13/16 2-3/4 1-3/16 1-3/16 3.57 3.60
3-1/2 8-1/2 5-1/2 15/16 4-13/16 4.00 3/8 7/8 2-13/16 1-1/4 1-1/4 4.07 4.10
4 9 6-3/16 15/16 5-5/16 4.50 7/16 15/16 3 1-5/16 1-5/16 4.57 4.60
5 10 7.5/16 15/16 6-7/16 5.56 7/16 15/16 3-1/2 1-7/16 1-7/16 5.66 5.69
6 11 8-1/2 1 7-9/16 6.63 1/2 1-1/16 3-1/2 1-9/16 1-9/16 6.72 6.75
8 13-1/2 10-5/8 1-1/8 9-11/16 8.63 1/2 1-1/4 4 1-3/4 1-3/4 8.72 8.75
10 16 12-3/4 1-3/16 12 10.75 1/2 1-5/16 4 1-15/16 1-15/16 10.88 10.92
12 19 15 1-1/4 14-3/8 12.75 1/2 1-9/16 4-1/2 2-3/16 2-3/16 12.88 12.92
14 21 16-1/4 1-3/8 15-3/4 14.00 1/2 1-5/8 5 2-1/4 3-1/8 14.14 14.18
16 23-1/2 18-1/2 1-7/16 18 16.00 1/2 1-3/4 5 2-1/2 3-7/16 16.16 16.19
18 25 21 1-9/16 19-7/8 18.00 1/2 1-15/16 5-1/2 2-11/16 3-13/16 18.18 18.20
20 27-1/2 23 1-11/16 22 20.00 1/2 2-1/8 5-11/16 2-7/8 4-1/16 20.20 20.25
24 32 27-1/4 1-7/8 26-1/8 24.00 1/2 2-1/2 6 3-1/4 4-3/8 24.25 24.25

Thickness of UNS N06625 Blind & Spectacle Blind Flanges

Listed thicknesses guarantee safety, longevity, and pressure integrity for specialized blind and spectacle blind flange designs.
Normal Pipe Size (NPS) O.D. (Outside Daimeter) STD Wall Outside Daimeter EXT Hvy Outside Daimeter Sch 10 Sch 20 Sch 30 Sch 40 Sch 60 Schedule 80 Schedule 100 Schedule 120 Schedule 140 Schedule 160 XX Hvy
½ 0.84 0.109 0.147 0.083 – – 0.109 – 0.147 – – – 0.188 0.294
¾ 1.05 0.113 0.154 0.083 – – 0.113 – 0.154 – – – 0.219 0.308
1 1.315 0.133 0.179 0.109 – – 0.133 – 0.179 – – – 0.25 0.358
1 ¼ 1.66 0.14 0.191 0.109 – – 0.14 – 0.191 – – – 0.25 0.382
1 ½ 1.9 0.145 0.2 0.109 – – 0.145 – 0.2 – – – 0.281 0.4
2 2.375 0.154 0.218 0.109 – – 0.154 – 0.218 – – – 0.344 0.436
2 ½ 2.875 0.203 0.276 0.12 – – 0.203 – 0.276 – – – 0.375 0.552
3 3.5 0.216 0.3 0.12 – – 0.216 – 0.3 – – – 0.438 0.6
3 ½ 4 0.226 0.318 0.12 – – 0.226 – 0.318 – – – – 0.636
4 4.5 0.237 0.337 0.12 – – 0.237 – 0.337 – 0.438 – 0.531 0.674
5 5.563 0.258 0.375 0.134 – – 0.258 – 0.375 – 0.5 – 0.625 0.75
6 6.625 0.28 0.432 0.134 – – 0.28 – 0.432 – 0.562 – 0.719 0.864
8 8.625 0.322 0.5 0.148 0.25 0.277 0.322 0.406 0.5 0.594 0.719 0.812 0.906 0.875
10 10.75 0.365 0.5 0.165 0.25 0.307 0.365 0.5 0.594 0.719 0.844 1 1.125 1
12 12.75 0.375 0.5 0.18 0.25 0.33 0.406 0.562 0.688 0.844 1 1.125 1.312 1
14 14 0.375 0.5 0.25 0.312 0.375 0.438 0.594 0.75 0.938 1.094 1.25 1.406 –
16 16 0.375 0.5 0.25 0.312 0.375 0.5 0.656 0.844 1.031 1.219 1.438 1.594 –
18 18 0.375 0.5 0.25 0.312 0.438 0.562 0.75 0.938 1.156 1.375 1.562 1.781 –
20 20 0.375 0.5 0.25 0.375 0.5 0.594 0.812 1.031 1.281 1.5 1.75 1.969 –
22 22 0.375 0.5 0.25 – – – – – – – – – –
24 24 0.375 0.5 0.25 0.375 0.562 0.688 0.969 1.219 1.531 1.812 2.062 2.344 –
26 26 0.375 0.5 – – – – – – – – – – –
30 30 0.375 0.5 0.312 0.5 0.625 – – – – – – – –
36 36 0.375 0.5 0.312 0.5 0.625 0.75 – – – – – – –
40 40 0.375 0.5 – – – – – – – – – – –
42 42 0.375 0.5 – – – – – – – – – – –
48 48 0.375 0.5 – – – – – – – – – – –

Weight Chart of Inconel 625 Forged Flanges

Weight charts assist in estimating logistics and structural requirements when planning piping systems with forged flanges.
Standard Class Diameter Number of Bolts Bolt Circle Diameter Diameter of Bolt Hole Bolt Size
AS4087 Flange PN14 Flange 95 4 67 14 M12
ANSI B16.5 Flanges ANSI 150 Flanges 89 4 60 16 13
ANSI 300 Flanges 95 4 67 16 13
ANSI 600 Flanges 95 4 67 16 13
ANSI 900 Flanges 121 4 83 22 19
ANSI 1500 Flanges 121 4 83 22 19
AS 2129 Flange Table C Flange 95 4 67 14 13
Table D Flange 95 4 67 14 13
Table E Flange 95 4 67 14 13
Table F Flanges 95 4 67 14 13
Table H Flanges 114 4 83 17 16
Table J Flanges 114 4 83 17 16
ISO 7005 (DIN) Flange PN6 Flanges 80 4 55 11 M10
PN10 Flanges 95 4 65 14 M12
PN16 Flanges 95 4 65 14 M12
PN20 Flanges 90 4 60.5 16 M14
PN25 Flanges 95 4 65 14 M12
PN40 Flanges 95 4 65 14 M12

Flange Faces & Gasket Sizes of Alloy 625 Flanges (RF, FF, RTJ)

Understand face types and gasket sizing to achieve optimal sealing and compatibility in Alloy 625 flange assemblies.
Normal Pipe Size Gasket I.D.
 Gasket O.D.
150 LB 300 LB 400 LB 600 LB 900 LB
1/2 0.84 1.875 2.125 2.125 2.125 2.50
1 1/4 1.66 3 3.25 3.25 3.25 3.50
2 1/2 2.88 4.875 5.125 5.125 5.125 6.50
3/4 1.06 2.25 2.625 2.625 2.625 2.75
1 1/2 1.91 3.375 3.75 3.75 3.75 3.875
2 2.38 4.125 4.375 4.375 4.375 5.625
1 1.31 2.625 2.875 2.875 2.875 3.125
3 3.50 5.375 5.875 5.875 5.875 6.625
4 4.50 6.875 7.125 7.00 7.625 8.125
5 5.56 7.75 8.50 8.375 9.50 9.75
6 6.62 8.75 9.875 9.75 10.50 11.375
8 8.62 11 12.125 12.00 12.625 14.125
10 10.75 13.375 14.25 14.125 15.75 17.125
12 12.75 16.125 16.625 16.50 18.00 19.625

Indicative Weight Chart of Inconel 625 Weld Neck Flanges (Class 150, ASME B16.5)

NPS (in)

OD (in)

Flange OD (in)

No. of Bolts

Approx. Weight (kg)

1/2

0.84

3.50

4

0.45

1

1.32

4.25

4

0.91

2

2.38

6.00

4

1.82

3

3.50

7.50

4

3.63

4

4.50

9.00

8

5.90

6

6.63

11.00

8

10.43

8

8.63

13.50

8

17.24

10

10.75

16.00

12

27.22

12

12.75

19.00

12

38.56

14

14.00

21.00

12

50.35

16

16.00

23.50

16

64.86

18

18.00

25.00

16

81.65

20

20.00

27.50

20

102.06

24

24.00

32.00

20

145.15

Testing & Quality Control of Inconel 625 Flanges

Every Inconel 625 Flange manufactured and supplied by Kalpataru Piping Solution undergoes a rigorous multi-stage quality control process:

Test Type

Method / Standard

Purpose

Chemical Analysis (PMI)

OES / XRF Spectrometry

Verify alloy composition against ASTM B564

Mechanical Testing

Tensile, Yield, Elongation per ASTM E8

Confirm strength meets spec minimums

Hardness Testing

Brinell / Rockwell per ASTM E10/E18

Check max hardness for NACE compliance

Hydrostatic Test

ASME B16.5 Section 8

Ensure no leakage under pressure

IGC (Intergranular Corrosion)

ASTM A262 Practice E / C

Confirm resistance to sensitization

Ultrasonic Testing (UT)

ASTM E114

Detect subsurface defects in forging

Magnetic Particle / Dye Penetrant

ASTM E709 / ASTM E165

Surface crack detection

Dimensional Inspection

ASME B16.5 tolerance check

Verify OD, bore, thickness, bolt circle

Pitting Resistance Test

ASTM G48 Method A/B

Confirm PREN value and pitting resistance

Corrosion Resistance Properties of Inconel 625 Flanges

Inconel 625 offers one of the broadest corrosion resistance profiles of any commercially available alloy, making it the flange material of choice in industries where failure is not an option:

Corrosion Type

Performance

Key Contributing Element

General Corrosion

Excellent – resists a wide range of organic & inorganic acids

High Ni + Cr content

Pitting Corrosion

Outstanding – PREN > 50

Mo + Nb additions

Crevice Corrosion

Excellent in chloride-bearing environments

Mo content 8–10%

Stress Corrosion Cracking (SCC)

Highly resistant in chloride media

High Ni (≥58%) base

Intergranular Corrosion

Excellent – Nb stabilizes grain boundaries vs. Cr carbide precipitation

Niobium (Nb)

High-Temp Oxidation

Resistant to 982°C (1800°F) continuous

Cr protective oxide layer

Seawater Corrosion

Excellent – widely used in offshore / marine applications

Mo + Ni combination

Phosphoric Acid

Good – suitable for wet-process phosphoric acid

Mo + Cr synergy

Applications & Industries Using Inconel 625 Flanges

Discover how Inconel 625 flanges support industries such as oil & gas, marine, petrochemical, and power with reliability and strength:

  • Chemical Processing
  • Power Generation
  • Oil and Gas
  • Marine Engineering
  • Aerospace
  • Desalination Plants
  • Pharmaceutical
  • Food Processing

Related Products

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Inconel 625 Flanges

Inconel 800 Flanges

Inconel 825 Flanges

Inconel 718 Flanges

Request a Quote for Inconel 625 Flanges Price

Kalpataru Piping Solution is your single-source inconel 625 flanges supplier in india for ASTM B564 UNS N06625 material in Mumbai. Whether you need a single piece for maintenance or a project quantity of thousands, we deliver quality, certifications, and on-time shipment.

Contact us today with your requirements: size, pressure class, face type, standard, and quantity. Our sales engineers will revert with a competitive quotation and material availability within 24 hours.

Request a Quote

Other Available Stock of ASTM B564 Inconel 625 Flanges

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  • Inconel Alloy 625 Long Weld Neck Flanges
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  • B564 Inconel 625 BLRF Flanges Distributors
  • Nickel Alloy 625 Lap Joint Flanges Trader
  • SB564 Inconel 625 LJRF Flanges Manufacturer
  • Inconel 625 Slip-on Raised Face Flanges
  • Inconel 625 SORF Flanges Stockholder
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  • Inconel 625 EN 1092-1 Flanges in Mumbai
  • Inconel 625 ASME/ANSI B16.5 Flanges
  • ASTM B564 Inconel 625 Weldoflange
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  • Inconel® 625 Forged Flanges Wholesaler
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  • Inconel 625 Ring Spacers (Paddle Spacers)
  • Inconel 625 Male & Female Flanges
  • B564 Inconel 625 Flat Face Flanges
  • Inconel 625 Flat Flanges Exporter
  • Alloy UNS N06625 Flanges
  • Inconel DIN 2.4856 Flange
  • Inconel 625 High Hub Blind Flanges
  • Inconel 625 ASME B16.5 Loose Flanges
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  • Inconel 625 DIN Flanges in India
  • Nickel Alloy 625 Flanges in Supplier

Applications of Inconel 625 Flanges Across Industries

Inconel 625 Flanges are specified wherever aggressive media, extreme temperatures, or chloride exposure rules out standard materials. Primary application environments include: offshore oil & gas platforms (sour gas lines, subsea manifolds), chemical processing plants (HCl, HF, phosphoric acid service), marine systems (seawater cooling, ballast systems), FGD scrubbers and flue gas desulphurisation plants, aerospace fuel and hydraulic systems, nuclear power plant coolant circuits, and LNG / cryogenic service down to -196°C.

Suppliers and Exporters of Inconel 625 ASME, ASTM, DIN, BS, EN Flanges in Countries Like

Germany, United States, Bahrain, thailand, Finland, Thailand, Estonia, Peru, cyprus, Austria, Iran, Turkey, srilanka, Hong Kong, Nigeria, France, Norway, Russia, Bhutan, Japan, Ghana, Mexico, China, Sweden, Bulgaria, Denmark, Ukraine, Argentina, Yemen, India, United Kingdom, Croatia, Venezuela, Costa Rica, Ireland, Canada, Zimbabwe, Nepal, Morocco, Qatar, Hungary, Taiwan, Egypt, Gambia, Greece, Slovakia, Serbia, South Korea, Gabon, Switzerland, Lebanon, Oman, Indonesia, Spain, Libya, malaysia, Australia, Vietnam, Poland, Mexico, Iran, Tibet, Chile, Sri Lanka, Italy, Puerto Rico, Belgium, Czech Republic, Nigeria, Trinidad & Tobago, brazil, Poland, Jordan, Malaysia, Bangladesh, Israel, Philippines, Afghanistan, Romania, Algeria, Colombia, Namibia, Belarus, Lithuania, Singapore, Macau, New Zealand, Mongolia, Kenya, Tunisia, Azerbaijan, Ecuador, mexico, Portugal, Bolivia, Netherlands, United Arab Emirates, Chile, Brazil, South Africa, Saudi Arabia, Kuwait, Kazakhstan.

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FAQ’s About Inconel 625 Flanges

Yes. Inconel 625 can operate over a wide range — from cryogenic temperatures up to about 982 °C (1800 °F). It also resists oxidation and scaling at high temperature due to its protective oxide film.
The high nickel content helps protect against chloride-induced stress corrosion cracking, and the niobium + molybdenum strengthens the matrix to resist crack propagation.
Yes. The alloy has very good weldability and can be joined by standard methods (like TIG, MIG). Machining is possible but demands care, as the alloy work-hardens; using rigid tooling and appropriate cutting speeds is recommended.