Inconel 625 Flanges Supplier
Table of Content
- Inconel 625 Flanges Specifications
- Inconel 625 Flanges Standard Sizes
- EN 2.4856 Flange Face
- Nickel 625 Flanges Thread
- Inconel 625 Weld Neck Flanges Process
- UNS N06625 Slip On Flanges Surface Finish
- Alloy 625 Flange Types
- ASTM B564 N06625 Flange Documentation
- Inconel 2.4856 Flanges Dimensional Standards
- Nickel Alloy 625 Flanges Application
- NiCr22Mo9Nb Inconel 625 Pipe Flange Packaging
- Types of Inconel 625 Flanges
- Related Products
- Frequently Asked Questions
- Request a Quote for Inconel 625 Flanges
Kalpataru Piping is a trusted supplier and exporter of Inconel 625 Flanges, and offers a full line of ASTM B564 UNS N06625 types of flanges to cater to the needs of critical piping systems all over the world. Our inventory covers all standard flange design, pressure rating, and face finish, which are sourced from mills that meet the internationally recognized material and dimensional standards. Inconel 625 Flanges are made up of a corrosion resistant and strong nickel chromium alloy that has 58% nickel and 20% chromium in the composition with carbon, manganese, silicon, sulfur, copper and iron. Our Inconel 625 Flanges are used in industries like oil and gas, chemical processing, power generation and offshore sectors. Clients who require the complete compatibility of different systems can also source our Inconel 625 Pipes and Tubes and Inconel 625 Forged Fittings.
Inconel 625 Flanges Specifications
Inconel 625 Flanges Standard Sizes
- Schedule : Sch 5 to XXS
- NPS: 1/2″ to 48″
- Class: 150 to 2500#
EN 2.4856 Flange Face
- FF (Flat Face)
- RF (Raised Face)
- RTJ (Ring Type Joint)
Nickel 625 Flanges Thread
- FNPT, NPT
- BSPT, BSPP
- MNPT
Inconel 625 Flanges Testing
- Pressure & Tensile Testing
- PMI (Positive Material ID)
- Hardness Test
EN 2.4856 Physical Properties
- Density: 8.44 g/cm³
- Melting Point: 1290-1350°C
- Temp Range: 2000°F (1093°C)
Global Standards
ASTM: B564 | ASME: SB 564
UNS: N06625 | WNR: 2.4856
UNS N06625 Surface Finish
- Spiral / Concentric
- Mirror, Serrated
- Smooth Finish
ASTM B564 Documentation
- MTC (Mill Test Certificate)
- 100% Radiography Report
- Third Party Inspection
Dimensional Standards
- ASME B16.5 & B16.47
- Series A & B
- MSS SP44
Nickel Alloy 625 Applications
- Aerospace & Marine
- Chemical Processing
- Nuclear Industry
Inconel 625 Packaging
- Bubble Wrap & Plastic Bags
- Anti-tarnish Paper
- Plastic Wrap Sealing
Supporting Material
- Gaskets & Ring Joints
- High Strength Flange Bolts
Types of Inconel 625 Flanges
Chemical Composition of Inconel 625 Flanges
All Inconel 625 flanges supplied by Kalpataru Piping are manufactured from certified UNS N06625 material. The chemical composition per ASTM B564 is as follows:
|
Element |
Symbol |
Content (% by weight) |
Role in Alloy |
|
Nickel |
Ni |
58.0% min |
Base element — corrosion and oxidation resistance |
|
Chromium |
Cr |
20.0 – 23.0% |
High-temperature oxidation and corrosion resistance |
|
Molybdenum |
Mo |
8.0 – 10.0% |
Pitting and crevice corrosion resistance; solid solution hardening |
|
Niobium + Tantalum |
Nb + Ta |
3.15 – 4.15% |
Weld stabilisation; prevents sensitisation; matrix strengthening |
|
Iron |
Fe |
5.0% max |
Residual — kept low for corrosion performance |
|
Cobalt |
Co |
1.0% max |
Residual |
|
Manganese |
Mn |
0.50% max |
Residual |
|
Silicon |
Si |
0.50% max |
Residual |
|
Carbon |
C |
0.10% max |
Low carbon — minimises carbide precipitation |
|
Titanium |
Ti |
0.40% max |
Residual |
|
Aluminum |
Al |
0.40% max |
Residual |
Mechanical Properties of Inconel 625 Flanges
Inconel 625 flanges supplied by Kalpataru Piping consistently exceed ASTM B564 minimum requirements — tensile strength typically reaches 930 MPa against the 827 MPa code minimum, and elongation averages 42.5 % against a 30 % requirement.
|
Property |
Value |
Unit |
|
Tensile Strength (min) |
930 MPa (135,000 psi) |
ASTM B564 requirement: 827 MPa (120 ksi) min |
|
Yield Strength 0.2% offset (min) |
517 MPa (75,000 psi) |
ASTM B564 requirement: 414 MPa (60 ksi) min |
|
Elongation (min) |
42.5% |
In 50mm gauge length (ASTM B564 min: 30%) |
|
Hardness (max) |
241 HB / 100 HRB |
As-forged and heat-treated condition |
|
Density |
8.44 g/cm³ (0.305 lb/in³) |
— |
|
Melting Range |
1290 – 1350°C (2350 – 2460°F) |
— |
|
Elastic Modulus |
207 GPa (30.1 × 10³ ksi) |
At room temperature |
|
Poisson’s Ratio |
0.278 |
— |
|
Max. Continuous Service Temperature |
982°C (1800°F) |
Oxidising atmosphere |
|
Min. Service Temperature (Cryogenic) |
-196°C (-320°F) |
No ductile-to-brittle transition |
Physical Properties of Inconel 625 Flanges
|
Property |
Value at 21°C (70°F) |
Value at 204°C (400°F) |
Value at 538°C (1000°F) |
|
Density (lb/in³ / g/cm³) |
0.305 / 8.44 |
0.305 / 8.44 |
0.305 / 8.44 |
|
Thermal Conductivity (Btu·in/h·ft²·°F) |
68 |
87 |
139 |
|
Specific Heat (Btu/lb·°F) |
0.098 |
0.109 |
0.118 |
|
Thermal Expansion (×10⁻⁶/°F) |
— |
7.3 |
7.7 |
|
Elastic Modulus (×10³ ksi) |
30.1 |
28.7 |
25.7 |
|
Magnetic Permeability at 200 Oe (15.9 kA/m) |
1.0006 |
— |
— |
Inconel 625 Flange Dimensions
|
Nominal Size |
Outside Diameter (OD) |
Min. Thickness (T) |
RF Dia. (R) |
No. of Bolt Holes |
Diameter of Holes |
Bolt Circle (BC) |
SO Bore ID (SB) |
Dia. Hub Base (HB) |
Dia. Hub Top (HT) |
SO LTH (SL) |
WN LTH (WL) |
* WN Bore ID (WB) |
|
1⁄2 |
3.75 |
0.56 |
1.38 |
4 |
0.63 |
2.62 |
0.88 |
1.5 |
0.84 |
0.88 |
2.06 |
* |
|
3⁄4 |
4.62 |
0.62 |
1.69 |
4 |
0.75 |
3.25 |
1.09 |
1.88 |
1.05 |
1.00 |
2.25 |
* |
|
1 |
4.88 |
0.69 |
2.00 |
4 |
0.75 |
3.50 |
1.36 |
2.12 |
1.32 |
1.06 |
2.44 |
* |
|
11⁄4 |
5.25 |
0.81 |
2.50 |
4 |
0.75 |
3.88 |
1.70 |
2.50 |
1.66 |
1.12 |
2.62 |
* |
|
11⁄2 |
6.12 |
0.88 |
2.88 |
4 |
0.88 |
4.50 |
1.95 |
2.75 |
1.90 |
1.25 |
2.75 |
* |
|
2 |
6.50 |
1.00 |
3.62 |
8 |
0.75 |
5.00 |
2.44 |
3.31 |
2.38 |
1.44 |
2.88 |
* |
|
21⁄2 |
7.50 |
1.12 |
4.12 |
8 |
0.88 |
5.88 |
2.94 |
3.94 |
2.88 |
1.62 |
3.12 |
* |
|
3 |
8.25 |
1.25 |
5.00 |
8 |
0.88 |
6.62 |
3.57 |
4.62 |
3.50 |
1.81 |
3.25 |
* |
|
31⁄2 |
9.00 |
1.38 |
5.50 |
8 |
1.00 |
7.25 |
4.07 |
5.25 |
4.00 |
1.94 |
3.38 |
* |
|
4 |
10.00 |
1.38 |
6.19 |
8 |
1.00 |
7.88 |
4.57 |
5.75 |
4.50 |
2.00 |
3.50 |
* |
|
5 |
11.00 |
1.50 |
7.31 |
8 |
1.00 |
9.25 |
5.66 |
7.00 |
5.56 |
2.12 |
4.00 |
* |
|
6 |
12.50 |
1.62 |
8.50 |
12 |
1.00 |
10.62 |
6.72 |
8.12 |
6.63 |
2.25 |
4.06 |
* |
|
8 |
15.00 |
1.88 |
10.62 |
12 |
1.12 |
13.00 |
8.72 |
10.25 |
8.63 |
2.69 |
4.62 |
* |
|
10 |
17.50 |
2.12 |
12.75 |
16 |
1.25 |
15.25 |
10.88 |
12.62 |
10.75 |
2.88 |
4.88 |
* |
|
12 |
20.50 |
2.25 |
15.00 |
16 |
1.38 |
17.75 |
12.88 |
14.75 |
12.75 |
3.12 |
5.38 |
* |
|
14 |
23.00 |
2.38 |
16.25 |
20 |
1.38 |
20.25 |
14.14 |
16.75 |
14.00 |
3.31 |
5.88 |
* |
|
16 |
25.50 |
2.50 |
18.50 |
20 |
1.50 |
22.50 |
16.16 |
19.00 |
16.00 |
3.69 |
6.00 |
* |
|
18 |
28.00 |
2.62 |
21.00 |
24 |
1.50 |
24.75 |
18.18 |
21.00 |
18.00 |
3.88 |
6.50 |
* |
|
20 |
30.50 |
2.75 |
23.12 |
24 |
1.62 |
27.00 |
20.20 |
23.12 |
20.00 |
4.00 |
6.62 |
* |
|
22 |
33.00 |
2.88 |
25.25 |
24 |
1.75 |
29.25 |
22.22 |
25.25 |
22.00 |
4.25 |
6.75 |
* |
|
24 |
36.00 |
3.00 |
27.25 |
24 |
1.88 |
32.00 |
24.25 |
27.62 |
24.00 |
4.50 |
6.88 |
* |
International Standards of 625 Inconel Flange
|
UNS: |
N06625 |
|
International Specifications: |
WERKSTOFF Nr 2.4856 |
|
Specifications: |
ASTM B564/ASME SB564 |
Gasket Size Of Inconel 625 Flanges
|
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 |
Inconel 625 Flange Pressure Rating
|
Temp., °C |
Working Pressures by Classes, bar |
||||||
|
– |
150 |
300 |
400 |
600 |
900 |
1500 |
2500 |
|
-29 ~ 38 |
20.0 |
51.7 |
68.9 |
103.4 |
155.1 |
258.6 |
430.9 |
|
50 |
19.5 |
51.7 |
68.9 |
103.4 |
155.1 |
258.6 |
430.9 |
|
100 |
17.7 |
51.5 |
68.7 |
103.0 |
154.6 |
257.6 |
429.4 |
|
150 |
15.8 |
50.3 |
66.8 |
100.3 |
150.6 |
250.8 |
418.2 |
|
200 |
13.8 |
48.6 |
64.8 |
97.2 |
145.8 |
243.4 |
405.4 |
|
250 |
12.1 |
46.30 |
61.7 |
92.7 |
139.0 |
231.8 |
386.2 |
|
300 |
10.2 |
42.9 |
57.0 |
85.7 |
128.6 |
214.4 |
357.1 |
|
325 |
9.3 |
41.4 |
55.0 |
82.6 |
124.0 |
206.6 |
344.3 |
|
350 |
8.4 |
40.3 |
53.6 |
80.4 |
120.7 |
201.1 |
335.3 |
|
475 |
3.7 |
31.7 |
42.3 |
63.4 |
95.1 |
158.2 |
263.9 |
|
500 |
2.8 |
28.2 |
37.6 |
56.5 |
84.7 |
140.9 |
235.0 |
|
538 |
1.4 |
16.5 |
22.1 |
33.1 |
49.6 |
82.7 |
137.9 |
|
550 |
– |
13.9 |
18.6 |
27.9 |
41.8 |
69.7 |
116.2 |
|
375 |
7.4 |
38.9 |
51.6 |
77.6 |
116.5 |
194.1 |
323.2 |
|
600 |
– |
6.6 |
8.9 |
13.3 |
19.9 |
33.2 |
55.3 |
|
625 |
– |
5.1 |
6.8 |
10.3 |
15.4 |
25.7 |
42.8 |
|
650 |
– |
4.7 |
6.3 |
9.5 |
14.2 |
23.6 |
39.4 |
|
400 |
6.5 |
36.5 |
48.9 |
73.3 |
109.8 |
183.1 |
304.9 |
|
425 |
5.5 |
35.2 |
46.5 |
70.0 |
105.1 |
175.1 |
291.6 |
|
450 |
4.6 |
33.7 |
45.1 |
67.7 |
101.4 |
169.0 |
281.8 |
|
575 |
– |
9.4 |
12.6 |
18.9 |
28.3 |
47.2 |
78.6 |
Inconel 625 Flange Faces
Related Products
- Inconel 625 Perforated Sheets
- Inconel 625 Forged Fittings
- Inconel 625 Fasteners
- Inconel 625 Compression Tube Fittings
- Inconel 625 Pipes and Tubes
- Inconel 625 Flanges
- Inconel 625 Plates and Sheets
- Inconel 625 Buttweld Fittings
- Inconel 625 Shims
- Inconel 625 Filler Wire
- Inconel 625 Perforated Sheets
- Inconel 625 Forged Fittings
- Inconel 625 Fasteners
- Inconel 625 Compression Tube Fittings
- Inconel 625 Pipes & Tubes
- Inconel 625 Flanges
- Inconel 625 Round Bars & Wires
- Inconel 625 Plates & Sheets
- Inconel 625 Buttweld Fittings
- Inconel 625 Shims
Frequently Asked Questions About Inconel 625 Flanges
How suitable are Inconel 625 flanges for cryogenic applications?
Inconel 625 flanges are also characterized by high mechanical strength and toughness in cryogenic conditions to -196°C (-320°F). It is not able to fracture at low temperatures in a brittle manner, the high nickel content and solid-solution-strengthened structure makes it impossible to occur like ferritic steels which have a ductile-to-brittle transition. They can thus be used in the LNG pipelines, cryogenic storage tanks, and low-temperature process equipment without low-temperature impact testing.
What is the maximum service temperature of Inconel 625 flanges?
Continuous service up to 982°C (1800°F) at oxidising atmospheres is possible using Inconel 625 flanges. Exposure to 1093°C (2000°F) is tolerable in the case of intermittent or short-duration service. The table above (per ASME B16.5) is the pressure-temperature ratings that specifies the way high pressure can be operated at each operating temperature, however, the lower the temperature, the lower the allowable pressure is – above 500°C the allowable pressure drops considerably.
What is the difference between Inconel 625 and Hastelloy C276 flanges?
Both alloys excel in corrosive environments, but they are specified for different threats. Inconel 625 has a higher niobium content for superior weld stability and performs better under cyclic thermal stress. Hastelloy C276 has a higher molybdenum content (15–17%) and is preferred where reducing acids (HCl, H₂SO₄) are the primary corrosive agent. For mixed or oxidising acid environments, Inconel 625 is typically the engineer’s first choice. Our technical team can advise on grade selection for your specific process stream. Contact us with your service conditions.
Are your Inconel 625 flanges dual-stamped or traceable to a specific heat?
Yes. Every Inconel 625 flange supplied by Kalpataru Piping carries a heat number stamped on the flange body and traceable to the original billet. The EN 10204 3.1 Mill Test Certificate links the heat number to the chemical analysis, mechanical test results, and PMI report for that specific heat. For projects requiring 3.2 certification, third-party inspection by Bureau Veritas, SGS, TÜV, or Intertek can be arranged at the enquiry stage.
Request a Quote for Inconel 625 Flanges
Kalpataru Piping maintains ready stock of ASTM B564 / UNS N06625 Inconel 625 Flanges in all standard and custom sizes, including slip-on, weld neck, blind, socket weld, threaded, lap joint, and spectacle blind flanges.
Get an immediate price for your Inconel 625 flange requirement. Our technical team will review your specifications and respond within 24 hours with the best pricing and delivery options.
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