Hangbo Alloy Group
Shanghai · Est. 2012
UNS N06200 / W.Nr. 2.4675 — Chemical composition, mechanical properties, temperature limits, and corrosion resistance data for engineers and procurement professionals.
Hastelloy C-2000 (UNS N06200 / W.Nr. 2.4675) is a versatile nickel-chromium-molybdenum alloy with a deliberate addition of copper. It was developed to expand the applicability of the C-family by adding resistance to sulfuric acid while maintaining the excellent resistance to hydrochloric acid and other reducing chemicals typical of Hastelloy C-276. The alloy resists both oxidizing and reducing media, and offers outstanding thermal stability. C-2000 is widely used in chemical processing, pharmaceutical production, and pollution control equipment where process streams may shift between acidic and oxidizing conditions.
The chemical composition of Hastelloy C-2000 is carefully controlled to deliver its unique combination of mechanical strength, corrosion resistance, and high-temperature stability. Trace elements such as carbon, boron, and zirconium are tightly controlled to ensure microstructural consistency and reproducible properties.
| Element | Min % | Max % |
|---|---|---|
| Nickel (Ni) | Balance | Balance |
| Chromium (Cr) | 20.0 | 23.0 |
| Molybdenum (Mo) | 15.0 | 17.0 |
| Copper (Cu) | 1.30 | 1.90 |
| Iron (Fe) | — | 3.0 |
| Cobalt (Co) | — | 2.0 |
| Carbon (C) | — | 0.010 |
| Manganese (Mn) | — | 0.50 |
| Silicon (Si) | — | 0.08 |
| Sulfur (S) | — | 0.010 |
| Phosphorus (P) | — | 0.025 |
Hastelloy C-2000 exhibits a face-centered cubic (FCC) austenitic matrix. Its physical properties remain stable across the service temperature range, supporting reliable thermal and mechanical design in aerospace, nuclear, and chemical applications.
| Property | Value | Unit |
|---|---|---|
| Density | 8.50 | g/cm³ |
| Melting Point | 1399 | °C |
| Specific Heat (21 °C) | 427 | J/kg·K |
| Thermal Conductivity (21 °C) | 9.1 | W/m·K |
| Electrical Resistivity (21 °C) | 1.28 | μΩ·m |
| Modulus of Elasticity (21 °C) | 206 | GPa |
| Mean CTE (21 – 93 °C) | 12.4 | μm/m·°C |
The mechanical properties below represent typical values for solution-treated and, where applicable, aged product forms. Actual values vary with section size, processing history, and heat treatment condition.
| Property | Value |
|---|---|
| Tensile Strength | ≥ 690 MPa (100 ksi) |
| Yield Strength (0.2% offset) | ≥ 310 MPa (45 ksi) |
| Elongation in 2 inches | ≥ 45% |
| Reduction of Area | ≥ 55% |
| Hardness (Annealed) | 89 HRB typical |
Hastelloy C-2000 retains useful strength and ductility at elevated temperatures. The data below are representative of the alloy in its standard heat-treated condition and are intended for preliminary design guidance.
| Temperature (°C) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| 21 | 690 | 310 | 45 |
| 316 | 655 | 270 | 46 |
| 427 | 620 | 255 | 47 |
| 538 | 575 | 240 | 49 |
| 649 | 510 | 225 | 52 |
| 760 | 420 | 210 | 55 |
| 871 | 315 | 195 | 58 |
Hastelloy C-2000 offers a distinctive corrosion resistance profile that makes it suitable for demanding service environments. The specific performance characteristics depend on the alloy's chromium, molybdenum, and other alloying additions.
The combination of high-temperature strength, corrosion resistance, and structural reliability makes Hastelloy C-2000 a preferred material across several critical industries:
Hangbo Alloy Group manufactures and supplies Hastelloy C-2000 in the following product forms, conforming to ASTM, AMS, ASME, and other international specifications:
| Standard | Description |
|---|---|
| ASTM B575 | Plate, Sheet, and Strip |
| ASTM B622 | Seamless Pipe and Tube |
| ASTM B619 | Welded Pipe |
| ASTM B626 | Welded Tube |
| ASTM B574 | Bar and Rod |
| ASTM B564 | Forgings |
| ASTM B366 | Fittings |
| ASME SB-575 | Boiler and Pressure Vessel Code — Plate/Sheet |
| ASME SB-622 | Boiler and Pressure Vessel Code — Seamless Tube |
| AWS A5.14 | Welding Wire (ERNiCrMo-17) |
| DIN 17744 | Werkstoff 2.4675 Specification |
| ISO 6208 | Nickel and Nickel Alloy Plate, Sheet, and Strip |
Hastelloy C-2000 has a density of approximately 8.50 g/cm³, typical for nickel-chromium-molybdenum alloys in the C-family.
Hastelloy C-2000 contains nickel as balance, 20–23% chromium, 15–17% molybdenum, 1.3–1.9% copper, ≤3% iron, ≤2% cobalt, ≤0.01% carbon, ≤0.50% manganese, ≤0.08% silicon, and ≤0.01% sulfur.
Key standards include ASTM B575, B622, B619, B626, B574, B564, B366, ASME SB-575/SB-622, AWS A5.14 ERNiCrMo-17, and DIN 17744 / W.Nr. 2.4675.
Hastelloy C-2000 is supplied in the solution-annealed condition. Annealing is typically performed at 1120 – 1175 °C followed by rapid water quench to retain corrosion resistance and avoid sigma-phase formation.
Price depends on nickel, chromium, molybdenum, and copper market prices, product form, dimensions, quantity, and inspection requirements. Tube and thin-gauge sheet are typically premium products.
Available forms include plates, sheets, seamless and welded pipes/tubes, bars, forgings, fittings, welding wire, strips, fasteners, clad products, and custom fabrications.
Yes. It is readily welded using GTAW, GMAW, and SMAW processes. Matching filler ERNiCrMo-17 is recommended. Low heat input and interpass temperatures below 93 °C help preserve corrosion resistance.
C-2000 offers better sulfuric acid resistance than C-276 due to copper addition, and comparable or better resistance to mixed oxidizing/reducing acids than C-22. It has a wider use window in sulfuric acid processes.
Standard mill products may require 3–6 weeks. Custom sizes and heavy plates can take 6–10 weeks. Minimum order quantities typically start at 100 kg depending on form and size.
C-2000 resists sulfuric, hydrochloric, phosphoric, and hydrofluoric acids, oxidizing and reducing media, chloride pitting, crevice corrosion, and stress corrosion cracking. It is also suitable for wet process phosphoric acid.
Hastelloy C-2000 can be used in oxidizing atmospheres up to about 1093 °C, though its primary advantage is in aqueous acid service below 200 °C.
Main applications include chemical reactors, pharmaceutical vessels, sulfuric acid heat exchangers, FGD scrubbers, pulp and paper equipment, oil and gas sour service components, and metal pickling systems.
Hangbo Alloy Group maintains extensive inventory of Hastelloy C-2000 in all standard product forms. We can provide mill test certificates, third-party inspection reports (SGS, TUV, BV), and custom processing services including cutting, machining, forging, and surface finishing.
For quotations, material certifications, or technical consultation, contact our sales team or call +86-136-1165-6360. We typically respond within 10 minutes.
Request a quotation for Hastelloy C-2000 round bars, tubes, plates, or forgings. We stock standard sizes and accept custom orders.