Hastelloy C22 Sheets & Plates
- Home
- Sheet and Plate
- Hastelloy Sheets & Plates
- Hastelloy C22 Sheets & Plates
Hastelloy C22 Sheets & Plates Supplier in Mumbai, India – ASTM B575 UNS N06022
Nicorex Alloys is an ISO 9001 and ISO 14001 certified supplier, stockist, and importer based in Mumbai, India. We supply Hastelloy C22 sheet and plate manufactured to ASTM B575 / ASME SB575.
Alloy C22 (UNS N06022, Werkstoff Nr. 2.4602) is a flat-rolled nickel-chromium-molybdenum-tungsten material with a nominal balance of Ni 56%, Cr 22%, Mo 13%, and W 3%. As per ASTM B575, material under 4.76 mm (3/16″) is classified as sheet; and above is plate. Sheet thickness ranges from 0.1 to 4.76 mm; plate from 4.76 to 120 mm. Widths span 1000 to 2500 mm, with lengths up to 6000 mm for sheets and 12000 mm for plates. Standard sizes include 1000×2000, 1220×2440, 1500×3000, and 2000×4000 mm. Available forms are sheet, plate, strip, coil, foil, and shim in both hot-rolled and cold-rolled processes. Surface finishes include #1, #2D, #2B, and BA. The melting range falls between 1357-1399°C (2475–2550°F), and the maximum continuous service temperature is 677°C (1250°F).
The key advantage of Hastelloy C22 lies in its higher chromium (22%). That extra Cr gives UNS N06022 sheet stronger resistance to oxidising media and chloride-induced pitting, while the Mo + W combination still covers reducing-acid service. This makes Alloy C22 the most versatile Ni-Cr-Mo alloy for mixed-acid environments and abnormal operating conditions. Target industries include chemical processing, FGD pollution control, oil and gas, pharmaceutical, pulp and paper, power generation, and marine. Every shipment includes EN 10204/3.1B mill test certificates.
Hastelloy C22 Sheet & Plate Specifications
Hastelloy C22 sheet and plate specifications consist of standards, dimensions, conditions, surface finishes, etc.
| Specification: | ASTM B575 / ASME SB575 |
|---|---|
| Sheet Thickness: | 0.1 to 4.76 mm |
| Plate Thickness: | 4.76 to 120 mm |
| Width: | 1000 to 2500 mm |
| Length: | Up to 6000 mm (sheets), 12000 mm (plates) |
| Standard Sizes: | 1000×2000, 1220×2440, 1500×3000, 2000×4000 mm |
| Process: | Hot Rolled, Cold Rolled |
| Condition: | Solution Annealed, As-Rolled |
Hastelloy C22 Sheet vs C276 Sheet – Selection Guide
| Parameter | C22 | C276 |
|---|---|---|
| Chromium | 20–22.5% | 14.5–16.5% |
| Molybdenum | 12.5–14.5% | 15–17% |
| Oxidising Acid Resistance | Superior | Good |
| Reducing Acid Resistance | Good | Superior |
| CPT in 6% FeCl₃ | >85°C | ~70°C |
| Mixed-Acid Upset | Best choice | Moderate |
Choose C22 for oxidising or mixed-acid upsets. Choose C276 for strongly reducing acids.
Chemical Composition of Hastelloy C22 Sheet & Plate
The Hastelloy C22 has a balanced amount of Nickel (approximately 56%) and its chromium sits at a range of 20-22.5%. The chemical composition table as per ASTM B575 has been given below:
| Element | Ni | Cr | Mo | W | Fe | Co | Mn | V | Si | C | P | S |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| wt% | Bal (~56) | 20.0–22.5 | 12.5–14.5 | 2.5–3.5 | 2.0–6.0 | 2.5 max | 0.50 max | 0.35 max | 0.08 max | 0.015 max | 0.02 max | 0.02 max |
0.015% C and 0.08% Si prevent weld HAZ precipitation, keeping C22 fully corrosion-resistant as-welded.
Mechanical Properties of ASTM B575 Hastelloy C22 Sheet & Plate
Mechanical properties per ASTM B575, solution-annealed, display the alloy’s high tensile and yield strength:
| Property | Tensile Strength (min) | Yield Strength, 0.2% Offset (min) | Elongation (min) | Hardness (max) | Charpy V-Notch Impact |
|---|---|---|---|---|---|
| Value | 690 MPa (100 ksi) | 310 MPa (45 ksi) | 45% | 100 HRB | >200 J at room temperature |
Mill values typically exceed minimums by 10–15%. C22 is not age-hardenable.
Physical Properties of Hastelloy C22
Physical properties of Alloy C22 consist of density, melting range, thermal conductivity, and other information:
| Property | Density | Melting Range | Thermal Conductivity (21°C) | Thermal Expansion (20–100°C) | Modulus of Elasticity |
|---|---|---|---|---|---|
| Value | 8.69 g/cm³ (0.314 lb/in³) | 1357–1399°C (2475–2550°F) | 10.1 W/m·°C | 12.4 µm/m·°C | 206 GPa (29.9 × 10⁶ psi) |
Hastelloy C22 Sheet & Plate Equivalent Grades
C22 is widely recognised by its standard equivalent designation as UNS N06022 and its Werkstoff number as 2.4602. The other equivalent designations for C22 sheet and plate are given below.
| Standard | UNS | Werkstoff Nr. | EN/DIN | JIS | GOST |
|---|---|---|---|---|---|
| Designation | N06022 | 2.4602 | NiCr21Mo14W / 17744 | NW 6022 | – |
Premium Industrial Materials
Get Hastelloy C22 Sheets & Plates at Competitive Prices
ISO Certified
Custom Sizes
Fast Delivery
Available Forms of Alloy C22 Sheet & Plate
Hastelloy C22 Hot Rolled Plate
Hastelloy C22 Cold Rolled Sheet
Hastelloy C22 Coil
Hastelloy C22 Foil & Shim Sheet
Hastelloy C22 Clad Plate
Hastelloy C22 Strip
Alloy C22 Shim Sheet
Hastelloy C22 Perforated Sheet
Corrosion Resistance of Hastelloy C22 Sheet & Plate
Hastelloy C22 resists both oxidising and reducing media. Cr at 22% handles nitric acid, ferric chloride, and wet chlorine. Mo (13%) + W (3%) cover HCl and H₂SO₄. CPT in 6% FeCl₃ per ASTM G48 exceeds 85°C (C276: ~70°C).
| Medium | Corrosion Rate |
|---|---|
| Boiling 10% H₂SO₄ | 0.03 mm/yr |
| Boiling 20% HCl | 0.51 mm/yr |
| Boiling 10% HNO₃ | 0.13 mm/yr |
| Flowing seawater, 29°C | < 0.025 mm/yr |
C22 is not suited above 677°C (1250°F) where µ and P phases may form.
Hot Working, Cold Forming & Heat Treatment of Hastelloy C22
Hot work at 870-1230°C. Do not work below 870°C. C22 sheet suits all cold forming in annealed condition (45% elongation). Solution anneal at 1121°C (2050°F) minimum, rapid quench. Slow cooling through 538-1038°C risks µ and P phases.
Weld with ERNiCrMo-10 (AWS A5.14) for GTAW/GMAW or ENiCrMo-10 for SMAW. SAW is not recommended. No PWHT required.
Industries Using Hastelloy C22 Sheet & Plate
C22 sheet and plate serve 7 major industries needing flat products for mixed-acid service.
- Reactor shells, tubesheets, column trays, and acid tanks under ASME Section VIII.
- Scrubber lining, absorber cladding, and stack liners in H₂SO₄, HCl, HF, and chloride service.
- Sour gas vessels (NACE MR0175), produced water systems, HF alkylation parts.
- Reactor vessels and solvent recovery columns for broad acid resistance.
- ClO₂ bleach washers, black liquor evaporator linings.
- Waste incineration scrubber linings and geothermal heat exchanger plates.
- Seawater heat exchanger tubesheets, desalination linings, and offshore cladding.
How to Order Hastelloy C22 Sheet & Plate from Nicorex Alloys
To order Hastelloy C22 sheet and plate, provide us with the following details:
- Product Form - Sheet, Plate, Strip, Coil, Foil, Clad Plate
- Thickness - Specify mm or gauge
- Width × Length - Standard or custom cut
- Quantity - In kg, MT, or number of sheets
- Condition - Solution Annealed, As-Rolled, Half Hard, etc.
- Surface Finish - #1, #2B, BA, Mirror
- Edge Type - Mill, Slit, Sheared, Rolled
- Standard - ASTM B575 / ASME SB575
- Additional Testing - NACE MR0175, ASTM G28 IGC, PMI, UT per ASTM A578
- Marking requirements - Paint marking, hard stamping, tag
- Packaging Requirements - Standard, export-grade wooden case, moisture barrier
- Delivery Destination - Domestic / Export
Frequently Asked Questions
What ASTM Standard Covers Hastelloy C22 Sheet and Plate?
ASTM B575 / ASME SB575 standards cover C22 (UNS N06022) sheet, plate, and strip.
What is the Thickness Difference Between Hastelloy C22 Sheet and Plate?
Up to 4.76 mm (3/16 inch) is sheet; 4.76 mm and above is plate. Below 0.15 mm is foil. Width under 610 mm is strip.
Can Hastelloy C22 Plate be Used for Pressure Vessel Fabrication?
Yes. ASME SB575 plates are approved under BPVC Sections III and VIII, solution-annealed condition.
What is the Maximum Service Temperature for Hastelloy C22 Sheet & Plate?
The maximum service temperature for Hastelloy C22 sheet & plate is 677°C (1250°F) for continuous service. Above this, intermetallic phases may form.
Is Post-Weld Heat Treatment Required for Hastelloy C22 Welds?
No. Ultra-low C (0.015%) and Si (0.08%) prevent HAZ precipitation. Use filler ERNiCrMo-10.
How Does Hastelloy C22 Compare to Inconel 625 for Corrosion?
C22 (22% Cr, 13% Mo) outperforms 625 (21.5% Cr, 9% Mo) in acid service. CPT: C22 >85°C vs 625 ~50°C.
Does Nicorex Alloys Provide Custom-Cut Hastelloy C22 Sheet & Plate?
Yes. Plasma, waterjet, laser, and shearing are available. Lead time is 2-4 weeks.