We are Riddhi Siddhi Impex, a Mumbai-based supplier and stockist of Hastelloy C22 Coils, founded in 2002. We hold a ready stock of Alloy C-22 (UNS N06022) coils to ASTM B575 / ASME SB-575 from 0.03 mm to 5 mm thick. Our ISO 9001, 14001, and 45001-certified firm has a monthly supply capacity of 400-500 tonnes, with EN 10204 Type 3.1 / 3.2 mill test certificates on request.
Hastelloy C22 Coils are flat-rolled nickel-chromium-molybdenum-tungsten alloy, valued for holding up in oxidising and reducing media alike. Chromium at 20.0 to 22.5% shields the surface in oxidising service. Molybdenum at 12.5 to 14.5%, backed by tungsten, blocks pitting and crevice corrosion in reducing acids and chlorides. A tight 0.015% carbon ceiling limits carbide precipitation, so welded parts keep their corrosion resistance without post-weld treatment. These Hastelloy Coils are used in chemical and petrochemical industries and pharmaceuticals.
As a trusted Hastelloy coil supplier, we buy source coils of this Ni-Cr-Mo-W alloy from reputed primary producers and slit them to width on our own lines. UNS N06022 coils ship in the annealed mill condition, in BA or 2B finish.
We supply ASTM B575 coils in the annealed condition across the finishes and edges below, slit to width from ready stock in hot rolled and cold rolled forms.
| Parameter | Details |
|---|---|
| Standard | ASTM B575 / ASME SB-575 |
| Thickness | 0.03 mm to 5 mm |
| Width | 3 mm to 2000 mm |
| Coil ID | 150 mm to 610 mm |
| Coil OD | Up to 1800 mm |
| Condition | Annealed (standard mill) |
| Surface Finish | BA (Bright Annealed), 2B |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
| Supply Form | Hot Rolled (HR), Cold Rolled (CR) |
Chromium is the key element in these coils, sitting well above the level found in most Ni-Cr-Mo grades. The full ASTM B575 limits for Hastelloy C-22 Coils follow.
| Element | Composition (% by weight) |
|---|---|
| Nickel (Ni) | Balance (approx. 56) |
| Chromium (Cr) | 20.0 to 22.5 |
| Molybdenum (Mo) | 12.5 to 14.5 |
| Iron (Fe) | 2.0 to 6.0 |
| Tungsten (W) | 2.5 to 3.5 |
| Cobalt (Co) | 2.5 max |
| Manganese (Mn) | 0.50 max |
| Vanadium (V) | 0.35 max |
| Silicon (Si) | 0.08 max |
| Phosphorus (P) | 0.02 max |
| Sulphur (S) | 0.02 max |
| Carbon (C) | 0.015 max |
Annealed N06022 coils carry a minimum tensile strength of 690 MPa with 45% elongation, so they form, press, and deep-draw without cracking. ASTM B575 sets the minimums below.
| Property | Value (Annealed) |
|---|---|
|
Tensile Strength, minimum
|
690 MPa (100 ksi) |
|
Yield Strength (0.2% offset), minimum
|
310 MPa (45 ksi) |
|
Elongation in 50 mm, minimum
|
45% |
Buyers who order Alloy C22 Coils by a regional designation can cross-reference W.Nr 2.4602 Coils and the other equivalents below. The matching weld filler is ERNiCrMo-10.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | N06022 |
| Europe (EN) | NiCr21Mo14W |
| Germany (W.Nr) | 2.4602 |
| Japan (JIS) | NW 6022 |
| China (GB) | NS3308 |
These 4 industries widely use the Alloy 22 Coils we dispatch. Buyers pick the grade when one circuit swings between oxidising and reducing chemistry.
Process plants use Alloy C-22 Coils in reactor linings, heat exchangers, and agitator components handling mixed acid streams. Sulphuric, nitric, and hydrochloric duties often share the same circuit, and the balanced chemistry copes with swings that push single-purpose grades out of service.
Flue gas desulphurisation systems often use these coils. Scrubber shells, inlet ducting, and stack liners run in hot chloride-laden condensate, where C22 resists the pitting and crevice attack that wet acid gas inflicts on coated steel.
Pharmaceutical plants specify Hastelloy C22 Coils for reaction vessels, transfer lines, and clean utility parts. The grade keeps product streams free of metallic contamination and withstands the acids and halide salts used in synthesis and clean-in-place cycles.
Bleach washers, chlorine dioxide generators, and incinerator scrubbers all draw on this alloy. Oxidising bleach chemistry favours the high chromium content, and waste-to-energy plants use C-22 Coils where flue gas composition changes from day to day.
Orders leave from our Mumbai and Taloja warehouses in wooden cases or on pallets.
| Parameter | Details |
|---|---|
| Packaging | Wooden cases, pallet packing |
| Incoterms | FOB, CIF, CFR, EXW Mumbai |
| Dispatch Points | Mumbai and Taloja warehouses |
| Standard Lead Time | 4 to 5 days |
| Urgent Dispatch | 2 to 3 days |
| Payment Terms | Advance, credit, LC |
| Certification | EN 10204 Type 3.1 / 3.2 on request |
Hastelloy C22 Coils price in India is around ₹2,700 to ₹4,400 per kg, roughly $29 to $46 per kg for international buyers. The rate tracks nickel and molybdenum benchmarks, and thickness, width, finish, and volume all move the figure. Volume discounts apply, so call or WhatsApp us with your requirement for the best rate.
The chemical composition of Hastelloy C22 coils per ASTM B575 is 20.0 to 22.5% chromium, 12.5 to 14.5% molybdenum, 2.5 to 3.5% tungsten, and 2.0 to 6.0% iron, with carbon capped at 0.015% and nickel as the balance.
The main difference between Hastelloy C22 and C276 coils is chromium. C22 carries 20.0 to 22.5% against 14.5 to 16.5% in C276, so it performs better in oxidising media. For hot concentrated hydrochloric acid, C276 stays the safer pick. Both ship as annealed ASTM B575 coils.
We supply Hastelloy C22 coils in thicknesses from 0.03 mm to 5 mm and widths from 3 mm to 2000 mm, slit to ±0.1 mm. It's all held as ready stock in the annealed condition.
The price of Hastelloy C-22 coils is around ₹2,700 to ₹4,400 per kg in India, roughly $29 to $46 per kg for export buyers. Thickness, width, finish, quantity, and prevailing nickel rates all shift the figure, so contact us for a firm quote.
You can source Hastelloy C22 coils in India from us at Riddhi Siddhi Impex. Our Mumbai warehouse holds C22 coil stock for prompt dispatch, and as a supplier, stockist, and exporter, we serve buyers across India and overseas. Get a quote within 24 hours.
