Hastelloy C-2000 at a Glance
- Designation: UNS N06200, Werkstoff 2.4675, commonly "Alloy C-2000", a copper-modified Ni-Cr-Mo-Cu alloy.
- Why it exists: at roughly 1.6% copper and 23% chromium, the alloy handles acid both ways, so one grade stands up to oxidizing and reducing media alike.
- Corrosion: it holds up well in sulfuric-acid and hydrochloric-acid service, and resists pitting and crevice corrosion to a very high degree.
- Delivery: solution-annealed, low-carbon (≤0.01% C) for intergranular-corrosion resistance, and built to ASTM B575.
- Traceability: every order ships with an EN 10204 3.1/3.2 mill test certificate. Genuine mill plate, ex-stock, ready for immediate dispatch.
Hastelloy plates sit on Nandini Steel's ISO 9001:2015 scope as a third-party-certified specialty, right alongside 904L, Alloy 28 and Incoloy 800. It's a documented differentiator for anyone who needs a nickel-alloy stockist capable of proving grade suitability. For the wider material family, see our nickel alloys reference.
Chemical Composition (UNS N06200)
Copper and high chromium aren't accidents here. Copper widens resistance into reducing acids, while chromium keeps the oxidizing-media performance intact. Between the two, C-2000 covers both regimes without a grade switch.
| Element | Symbol | Composition (wt%) |
|---|---|---|
| Nickel | Ni | Balance (~59) |
| Chromium | Cr | 22.0–24.0 |
| Molybdenum | Mo | 15.0–17.0 |
| Copper | Cu | 1.3–1.9 |
| Iron | Fe | 3.0 max |
| Cobalt | Co | 2.0 max |
| Manganese | Mn | 0.50 max |
| Silicon | Si | 0.08 max |
| Carbon | C | 0.010 max |
| Phosphorus | P | 0.025 max |
| Sulfur | S | 0.010 max |
Mechanical Properties (Solution-Annealed)
| Property | Value (minimum, solution-annealed) |
|---|---|
| Tensile strength | ≥ 690 MPa (100 ksi) |
| Yield strength (0.2% offset) | ≥ 310 MPa (45 ksi) |
| Elongation in 2 in. | ≥ 45% |
| Hardness | ≈ 90 HRB max |
Physical Properties
| Property | Value |
|---|---|
| Density | ~8.50 g/cm³ |
| Melting range | ~1328–1358 °C |
| Thermal conductivity | ~9.1 W/m·K |
| Mean CTE (20–100 °C) | ~12.4 µm/m·°C |
| Elastic modulus | ~207 GPa |
| Magnetic response | Non-magnetic |
The density figure (8.50 g/cm³, roughly) determines how much a plate or bar weighs. Use our weight calculator to estimate shipping mass.
Corrosion Behavior and PREN: Why C-2000 Exists
Hastelloy C-2000 earns its spot on a spec sheet when the process medium swings between oxidizing and reducing conditions and one Ni-Cr-Mo grade has to handle both. About 16% molybdenum gives it resistance to reducing acids like sulfuric and hydrochloric. Roughly 23% chromium covers the oxidizing side. Then there's the copper, around 1.6%, which widens the band where both hold up at once. That's what makes C-2000 the versatile member of the C-family.
Molybdenum and chromium together give this grade excellent resistance to pitting and crevice corrosion, with an indicative PREN of roughly 76 (Cr + 3.3·Mo). Low carbon content, at or below 0.01%, paired with solution-annealed delivery, keeps it resistant to intergranular corrosion too. If you're choosing a material for acid service specifically, our note on sulfuric-acid resistance is worth a look.
Equivalent Grades and Designations
| System | Designation |
|---|---|
| UNS | N06200 |
| Werkstoff (W.-Nr.) | 2.4675 |
| Common name | Alloy C-2000 / Hastelloy C-2000 |
| Chemistry shorthand | NiCr23Mo16Cu |
Hastelloy C-2000 vs C-276 vs C-22
All three are Ni-Cr-Mo alloys, but they lean differently. Choose C-2000 when the medium is also oxidizing, its higher chromium plus copper outperform Hastelloy C-276 in oxidizing conditions while retaining reducing-acid resistance. C-276 adds tungsten and leans toward reducing service; Hastelloy C-22 is strong in oxidizing and localized-corrosion duty.
| Grade (UNS) | Cr (%) | Mo (%) | Cu (%) | W (%) | PREN (ind.) | Choose when |
|---|---|---|---|---|---|---|
| C-2000 (N06200) | ~23 | ~16 | ~1.6 | – | ~76 | Mixed oxidizing + reducing acids, one versatile grade |
| C-276 (N10276) | ~16 | ~16 | – | ~3.5 | ~68 | Reducing-leaning service; tungsten for localized attack |
| C-22 (N06022) | ~22 | ~13 | – | ~3.0 | ~65 | Oxidizing media and localized corrosion resistance |
For high-temperature oxidation rather than wet-acid duty, compare Hastelloy X.
Available Forms and Sizes
Nandini Steel supplies Hastelloy C-2000 in both flat and long product forms, all ex-stock and ready for immediate dispatch. Each shipment comes with a 3.1 mill test certificate.
| Form | Standard | Indicative range |
|---|---|---|
| Hastelloy round bar | ASTM B574 | Rod / forged bar |
| Hastelloy pipe & tube | ASTM B622 / B619 | Seamless & welded |
| Hastelloy pipe fittings | ASTM B366 | Elbows, tees, reducers |
| Hastelloy forged fittings | ASME B16.11 / A182 | Socket-weld & threaded |
| Hastelloy flanges | ASME B16.5 / B16.47 | WN, SO, blind |
| Hastelloy fasteners | ASTM F468 / F467 | Bolts, nuts, studs |
Plate and sheet come supplied to ASTM B575. Share your form, standard and size schedule on the RFQ so we can confirm exact stock and dispatch.
Standards and Specifications Complied
Hastelloy C-2000 (N06200) is furnished to the relevant ASTM/ASME product standards:
- ASTM B575, plate, sheet and strip
- ASTM B574, rod and bar
- ASTM B622 / B619, seamless and welded pipe and tube
- ASTM B366, pipe fittings
- ASTM B564 / ASME B16.11 / A182, forgings and forged fittings
C-2000 gets welded with matching ERNiCrMo-17 filler, and the as-delivered condition comes solution-annealed to restore corrosion resistance.
Applications
- Chemical and acid processing, reactors, heat exchangers and piping that handle sulfuric, hydrochloric and mixed acids.
- Flue-gas desulfurization and pollution control, scrubbers and ducting where oxidizing and reducing species sit side by side.
- Pharmaceutical and fine-chemical, reactor vessels and wetted parts that need one grade covering several corrosion modes with minimal contamination risk.
Testing, Inspection and Certification
Every heat ships with full traceability. Nandini Steel includes an EN 10204 3.1 mill test certificate with each order, 3.2 is available on request, and it documents heat/cast chemistry along with mechanical results. PMI confirms the N06200 chemistry. Intergranular-corrosion testing follows ASTM G28, while hydrostatic or ultrasonic testing gets applied to pipe and fittings depending on what the form calls for. Take a look at how we handle testing, MTC, NDT and PMI across the yard.
Frequently Asked Questions
What is Hastelloy C-2000?
Is Hastelloy C-2000 better than C-276?
What is the PREN of Hastelloy C-2000?
Does Hastelloy C-2000 come with a mill test certificate?
Request a Quote
Nandini Steel has been in business since 2003 and holds ISO 9001:2015 certification (Cert No. 1283438, issued by Unitas Certification Services UCS-UK) as a stockist and supplier. Hastelloy plates sit within that certified scope. Every batch of Hastelloy C-2000 is genuine mill material. It's held ex-stock, so dispatch is immediate, and each shipment comes with a 3.1/3.2 mill test certificate. Just send over your grade, form, standard and sizes, and you'll get live pricing back.
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