
ASTM B575 Hastelloy C22 Plate
1. Standard: ASTM B575, ASTM B333
2. Width: 0~2500mm or as per your requirements
3. Length: 0~12m or as per your requirements
4. Thickness: 0.3~ 200mm or as per your requirements
5. Grades: Hastelloy C22, alloy c22, UNS N06022, 2.4602
ASTM B575 Hastelloy C22 Plate is a nickel-chromium-molybdenum-tungsten alloy, designated UNS N06022 under the unified numbering system and covered by ASTM B575 / ASME SB575 for plate, sheet, and strip. The Werkstoff number is 2.4602, and if you are dealing with Chinese procurement channels, you might see it cross-referenced as NS3302. HT PIPE is a sb 575 uns n06022 plate supplier with 15+ export experience. Contact us for more information and quotes for free!
Product Forms
- Bar & Rod
- Plate & Sheet
- Coil & Strip
- Pipe & Tube
- Fitting: Flange, Tee, Elbow, Reducer etc.
- Forging: Ring, Shaft, Circle, Block etc.

ASME SB575 UNS N06022 Plate Specifications
| Specification | ASTM B575 / ASME SB575 |
| Standard | ASTM, ASME and API |
| Thickness | Ranging from 0.3mm to 200mm |
| Length | 2000 mm / 2440 mm / 2500 mm / 3000 mm / 6000 mm. |
| Hardness | As per ASME A & NACE MR 175 |
| Width | 1000mm / 1219mm /1250mm / 1500mm / 2000mm |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Grade | Hastelloy C22 (UNS N06022) |
What Makes C22 Different
| Alloy | UNS | Best For | Where It Loses to C22 |
|---|---|---|---|
| Hastelloy C276 | N10276 | Strong reducing acids (HCl, H₂SO₄) | Oxidizing environments; C22 has higher chromium and holds up better in mixed-acid conditions |
| Hastelloy C2000 | N06200 | Very broad corrosion resistance, good for both oxidizing and reducing | More expensive; C22 is often adequate and more widely available in plate form |
| Inconel 625 | N06625 | High-temperature strength + oxidation resistance | Chloride pitting resistance at lower temperatures; C22 plate generally outperforms 625 in wet corrosion below 300°C |
| Alloy 59 | N06059 | Highest PREN of the nickel-chromium-molybdenum family | Premium pricing and limited mill availability in heavy plate gauges |
| Super Duplex 2507 | S32750 | High strength at lower cost | Temperature ceiling (2507 has a practical limit around 250°C); C22 goes higher without embrittlement |
Critical Industrial Applications
1. Chemical Processing and Waste Management
Chemical plants frequently process unpredictable mixed waste streams. Upset conditions can rapidly shift an environment from reducing to oxidizing. Because C-22 plate handles both conditions simultaneously, it is widely used to construct multi-purpose reactors, agitators, and distillation columns.
2. Pharmaceutical and Active Pharmaceutical Ingredient (API) Synthesis
Contamination is a major risk in pharmaceutical production. High-chloride buffer solutions can cause pitting in standard 316L stainless steel. C-22 plates provide a smooth, ultra-stable surface that prevents trace metal ions from leaching into batches of medicine.
3. Flue Gas Desulfurization (FGD) and Scrubbers
Power plants and manufacturing facilities rely on scrubbers to clean sulfur dioxide and acidic emissions from flue gases. The resulting condensates are highly acidic and rich in chlorides. C-22 plate helps ducting systems and stack liners withstand these aggressive environments.
Surface Finishing & Passivation
Mill Finish vs. Polish: For flue gas desulfurization (FGD), a standard hot-rolled, annealed, and descaled (No. 1) finish is fine. But for the pharmaceutical industry, the plate must be mechanically polished or electropolished to a specific Surface Roughness value. This prevents bacterial biofilm growth and makes cleaning easier.
Passivation and Pickling: After welding or forming, the plate surface can become contaminated with embedded iron from tools or carbon steel dust. Treating the surface with a nitric/hydrofluoric acid pickling paste restores the protective chromium-molybdenum oxide passive film.
Comparative Alloys: When to Choose C-22 vs. Competitors
Hastelloy C-22 vs. C-276 (The Classic Choice): C-276 is the legacy alloy. C-22 contains more chromium, which makes it much better at handling oxidizing acids (like nitric acid or solutions with ferric ions and dissolved oxygen). If your process switches between reducing and oxidizing conditions, C-22 is the safer option.
Hastelloy C-22 vs. C-2000: Alloys like C-2000 include deliberate copper additions to improve resistance to pure sulfuric acid. However, C-22 remains the preferred industry standard for mixed waste streams and multi-purpose chemical batch reactors due to its versatile track record.
FAQ
Q: About ASTM B575 Hastelloy C22 Plate price per kg?
A: Prices ranges from $25 to $40 per kg, vary depending on size, wall thickness, supplier etc.
Q: How long does your delivery time take?
A: Delivery time is within 5-21 days
Q: Is There Sample Service?
A: Samples Are Provided Free Of Charge
Q: What Is The Minimum Order Quantity?
A: No Minimum Order Quantity
Q: How to pack the products?
A: The inner layer has a waterproof paper outer layer and is fixed with a fumigation wooden pallet.
Q: Exported Countries
A: Brazil, South Africa, Indonesia, India, Singapore, Malaysia, Iran, Russia, UAE, Chile, Laos, etc
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