Hastelloy C22 Slip-on FlangeASTM B462 · ASME B16.5 · Manufacturer, stockist & exporter, India
Alloy C-22 · UNS N06022 · SORF
A Hastelloy C22 slip-on flange is a flange that slides over the pipe and is fillet-welded inside and outside, made from Hastelloy C22 to ASTM B462 / B564. Choose a slip-on flange for lower-pressure lines where easy alignment and lower cost matter more than fatigue strength. It needs less precise pipe cutting than a weld neck.
- ASTM B462
- ASME B16.5
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a Hastelloy C22 Slip-on Flange?
- What it is
- A flange that slides over the pipe and is fillet-welded inside and outside
- Material
- ASTM B462 / B564
- Dimensions
- ASME B16.5 · EN 1092-1
- Grade
- Hastelloy C22 · UNS N06022
- Best at
- Mixed oxidising and reducing acids, and weld overlays
Hastelloy C22 Slip-on Flange Specification
| Product | Hastelloy C22 Slip-on Flange |
|---|---|
| Material standard | ASTM B462 / B564 |
| Dimensional standard | ASME B16.5 · EN 1092-1 |
| Sizes | ½" – 24" (ASME B16.5) · 26" – 60" (ASME B16.47) |
| Pressure class | Class 150, 300, 400, 600, 900, 1500, 2500 · PN 6 – PN 100 |
| Facing | RF · FF · RTJ · tongue & groove |
| Bore | To match pipe schedule (state on order) |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Slip-on Flange
Choose a slip-on flange for lower-pressure lines where easy alignment and lower cost matter more than fatigue strength. It needs less precise pipe cutting than a weld neck.
- Two fillet welds: one at the hub, one inside the bore
- Lower fatigue life than a weld neck in cyclic service
- Available with a hub or as a plate (hubless) design
More on choosing: Slip-on flange guide.
Hastelloy C22 Slip-on Flange: Why C22 for slip-on flanges
Choose a slip-on flange for lower-pressure lines where easy alignment and lower cost matter more than fatigue strength. It needs less precise pipe cutting than a weld neck. In Hastelloy C22, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Nickel-alloy flanges are used where acids, chlorides or heat defeat stainless. Hastelloy C22 is picked for mixed oxidising and reducing acids, and weld overlays. |
|---|---|
| Typical service | Chemical processing — Equipment seeing both oxidising and reducing conditions. |
| B16.5 material group | 3.8 |
| Bolting | B7 (coated), B8M or nickel-alloy studs such as Hastelloy C22 from ASTM B574, as the project specifies |
| Welding to carbon steel | A nickel-base filler such as ERNiCr-3 (or ERNiCrMo-3) is used when joining it to carbon steel |
| Matching filler | ERNiCrMo-10 (AWS A5.14) |
| Sour service | Listed in NACE MR0175 / ISO 15156-3 within its limits — state it on the order |
Hastelloy C22 Slip-on Flange Chemical Composition
| Element | Weight % |
|---|---|
| Nickel | Balance |
| Chromium | 20.0 – 22.5 |
| Molybdenum | 12.5 – 14.5 |
| Iron | 2.0 – 6.0 |
| Tungsten | 2.5 – 3.5 |
| Cobalt | 2.5 max |
| Carbon | 0.015 max |
| Manganese | 0.50 max |
Hastelloy C22 Slip-on Flange Mechanical Properties
| Solution-annealed plate & sheet | Value |
|---|---|
| Tensile strength | 690 MPa · 100 ksi |
| Yield strength 0.2% | 310 MPa · 45 ksi |
| Elongation | 45% |
Full chemistry, properties and equivalents are on the Hastelloy C22 grade page.
Other Hastelloy C22 flanges
Hastelloy C22 Slip-on Flanges for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiHastelloy C22 Slip-on Flange dimensions — ASME B16.5 Class 150 & 300
Outside diameter, thickness and bolting are set by size and class. Values in mm; thickness excludes the 1.6 mm raised face.
| NPS | Cl 150 OD | Cl 150 thickness | Cl 150 bolt circle | Cl 150 bolts | Cl 300 OD | Cl 300 thickness | Cl 300 bolt circle | Cl 300 bolts |
|---|---|---|---|---|---|---|---|---|
| ½" | 90 | 9.6 | 60.3 | 4 × ½" | 95 | 12.7 | 66.7 | 4 × ½" |
| 1" | 110 | 12.7 | 79.4 | 4 × ½" | 125 | 15.9 | 88.9 | 4 × ⅝" |
| 1½" | 125 | 15.9 | 98.4 | 4 × ½" | 155 | 19.1 | 114.3 | 4 × ¾" |
| 2" | 150 | 17.5 | 120.7 | 4 × ⅝" | 165 | 20.7 | 127.0 | 8 × ⅝" |
| 3" | 190 | 22.3 | 152.4 | 4 × ⅝" | 210 | 27.0 | 168.3 | 8 × ¾" |
| 4" | 230 | 22.3 | 190.5 | 8 × ⅝" | 255 | 30.2 | 200.0 | 8 × ¾" |
| 6" | 280 | 23.9 | 241.3 | 8 × ¾" | 320 | 35.0 | 269.9 | 12 × ¾" |
| 8" | 345 | 27.0 | 298.5 | 8 × ¾" | 380 | 39.7 | 330.2 | 12 × ⅞" |
| 10" | 405 | 28.6 | 362.0 | 12 × ⅞" | 445 | 46.1 | 387.4 | 16 × 1" |
| 12" | 485 | 30.2 | 431.8 | 12 × ⅞" | 520 | 49.3 | 450.8 | 16 × 1⅛" |
Full chart: ASME B16.5 flange dimensions.
Hastelloy C22 Slip-on Flange — questions buyers ask
Slip-on or weld neck — which is stronger?
The weld neck. A slip-on flange is fine for moderate pressure and temperature, but in cyclic or severe service engineers specify weld neck flanges.
What pressure rating does a Hastelloy C22 slip-on flange have?
It depends on class and temperature. Hastelloy C22 forgings are in ASME B16.5 material group 3.8; read your class column in that group's table at the design temperature.
Can Hastelloy C22 slip-on flanges be welded to carbon steel?
Yes — a nickel-base filler such as ERNiCr-3 (or ERNiCrMo-3) is used when joining it to carbon steel.
Which standard covers Hastelloy C22 slip-on flanges?
The material is ASTM B462 / B564; dimensions follow ASME B16.5 · EN 1092-1. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Hastelloy C22 slip-on flange?
The alloy price, the size and pressure class, quantity, and the testing and documents required. Send your list and we quote the same working day.
Can you supply Hastelloy C22 slip-on flanges to NACE MR0175?
Yes. Hastelloy C22 is listed in NACE MR0175 / ISO 15156-3 within its limits; state NACE compliance on the order and it is confirmed on the certificate.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026