Hastelloy C-2000 (UNS N06200) – Supplier of Round Bars, Seamless Tubes & Plates | Shanghai Hangbo Alloy Group
Date: 2026年7月18日 Categories: News Views: 262
By Shanghai Hangbo Alloy Group Co., Ltd. | ISO 9001:2015 | Est. 2012 | Shanghai, China
Contact: sales@hangboalloy.com | hangbo@nickel-alloy.com | WhatsApp: +86 13611656360
Quick Answer: What Is Hastelloy C-2000?
Hastelloy C-2000 (UNS N06200 / W.Nr. 2.4675) is the most versatile member of the nickel-chromium-molybdenum alloy family, uniquely engineered to resist both oxidizing and reducing environments simultaneously — something no other single Hastelloy alloy can claim. By combining high chromium (23%), high molybdenum (16%), and a deliberate addition of copper (1.6%), C-2000 effectively bridges the performance gap between C-276 (best for reducing environments) and C-22 (best for oxidizing). Shanghai Hangbo Alloy Group supplies C-2000 in precision round bars, seamless tubes, and plates with full EN 10204 3.1 certification.
Key Properties at a Glance
| Property | Value |
|---|---|
| UNS Number | N06200 |
| W.Nr. | 2.4675 |
| Density | 8.50 g/cm³ (0.307 lb/in³) |
| Melting Range | 1335 – 1380 °C (2435 – 2515 °F) |
| Max Service Temp. | 1000 °C (1832 °F) |
| Tensile Strength (RT) | ≥ 690 MPa (100 ksi) |
| Yield Strength (RT) | ≥ 283 MPa (41 ksi) |
| Elongation (RT) | ≥ 45% |
| Thermal Conductivity | 9.1 W/m·K (at 25°C) |
| Unique Feature | 1.6% Copper for dual-environment superiority |
| Key Standards | ASTM B574, B575, B622; NACE MR0175 |
The Mixed-Acid Trap: Why One Alloy Fails When Two Are Needed
Most chemical plants do not process a single clean acid. They process a mixed cocktail — HCl one day, HNO₃ the next, H₂SO₄ with tramp chlorides the third. Choosing the wrong single-environment alloy for a mixed process is the number one cause of premature heat-exchanger failure we see globally.
Pain Point 1: The "C-276 Looks Good on Paper… Until the Oxidizer Hits"
If your process involves hydrochloric acid (reducing) followed by a cleaning cycle with nitric acid (oxidizing), C-276 will corrode rapidly during the HNO₃ cycle. We have seen pharmaceutical reactor agitators lose 2mm of wall thickness in a single year because the plant's CIP (Clean-in-Place) cycle used trace HNO₃. C-2000's copper addition stabilizes the passive film during these redox transitions, keeping the material intact across both cycles.
Pain Point 2: "We bought C-22 to replace C-276, but the hot H₂SO₄ still etches the grains."
C-22 is superior to C-276 in oxidizing environments, but in concentrated reducing sulfuric acid at 80°C, its slightly lower molybdenum and lack of copper leave it vulnerable. C-2000's 16% molybdenum + 1.6% copper combination creates a synergistic barrier that repels sulfur penetration in a way that either C-22 or C-276 alone cannot match.
Pain Point 3: Dual-Tank Specification Overhead
Some engineers specify separate alloys for different tank sections — C-276 for the acid feed zone and C-22 for the oxidizer injection zone — creating a complex weld transition and spare parts nightmare. C-2000 allows you to unify the entire system under one certified alloy, streamlining your bill of materials, welding procedures, and inspection protocols.
How Shanghai Hangbo Solves Mixed-Environment Failure
| Your Pain Point | Our Engineered Solution | Your Advantage |
|---|---|---|
| Redox cycling corrosion | Cu-stabilized C-2000 chemistry (verified OES on every heat) | Single material for HCl/HNO₃ mixed cycles |
| Sulfur penetration in H₂SO₄ | 16% Mo + 1.6% Cu synergistic barrier | Stable in concentrated H₂SO₄ to 80°C |
| Complex dual-alloy designs | Single-alloy specification across the entire system | Simplified welding, inspection, and BOM |
| Traceability on specialty alloys | VIM+ESR melt logs + full EN 10204 3.1 | Seamless third-party inspection |
Product Overview: The Metallurgical Bridge
Hastelloy C-2000 (UNS N06200) is the only commercial nickel-chromium-molybdenum alloy formulated with a deliberate copper addition for corrosion performance. While earlier Hastelloy grades added copper only for incidental benefits, C-2000 was designed from the ground up to use Cu as a primary passivation stabilizer. The result is an alloy that exhibits the reducing-acid resistance of C-276, the oxidizing-acid resistance of C-22, and a unique tolerance for redox fluctuation that no previous generation could achieve.
Why does copper matter?
In electrochemical terms, copper has a higher redox potential than nickel. When the process shifts from reducing to oxidizing, the copper atoms act as "electron sponges," absorbing the excess oxidizing potential and preventing the breakdown of the chromium-oxide passive film. This mechanism simply does not exist in C-276 (no Cu) or C-22 (no Cu).
Shanghai Hangbo Alloy Group (est. 2012) supplies C-2000 in round bars, seamless tubes, and plates. Our ISO 9001:2015-certified production ensures the copper stays in solid solution — not segregated — which is the critical metallurgical challenge of this alloy chemistry.
Related grades: Hastelloy C-276 · Hastelloy C-22 · Hastelloy C-4 · Inconel 625
Executive Standards
| Product Form | ASTM | ASME | W.Nr./DIN |
|---|---|---|---|
| Round Bar / Forging | B574 / B564 | SB-574 / SB-564 | 2.4675 |
| Seamless Tube / Pipe | B622 | SB-622 | 2.4675 |
| Sheet / Plate / Strip | B575 | SB-575 | 2.4675 |
Chemical Composition (wt.% per ASTM B574)
| Element | Ni | Cr | Mo | Cu | Fe | Mn | Si | Al | C | P | S |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | Bal. | 22.0 | 15.0 | 1.3 | — | — | — | — | — | — | — |
| Max | Bal. | 24.0 | 17.0 | 1.9 | 3.0 | 0.50 | 0.08 | 0.50 | 0.01 | 0.025 | 0.025 |
Critical check: Copper must be 1.3–1.9%. If your PMI shows zero copper, you've been supplied C-22 or C-276, not C-2000.
Mechanical & Physical Properties
Room-Temperature (Solution-Annealed)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 690 MPa (100 ksi) |
| Yield Strength (0.2%) | ≥ 283 MPa (41 ksi) |
| Elongation | ≥ 45% |
| Hardness | ≤ 100 HRB |
| Density | 8.50 g/cm³ |
| Melting Range | 1335–1380 °C |
Heat Treatment
- Solution Annealing: 1121 °C – 1149 °C (2050 °F – 2100 °F)
- Cooling: Water quench mandatory. Copper must remain in solid solution.
- Post-Weld: No PWHT required; Cu-stabilized chemistry resists sensitization.
- Grain Size: ASTM No. 5–7, verified on every Hangbo batch.
Production Process (Shanghai Hangbo)
1. Round Bars
- VIM+ESR for precise Cu/Mo distribution and ultra-low carbon (≤0.01%).
- Hot forging at 1040–1200 °C with controlled grain refinement.
- Solution anneal at 1140 °C followed by water quench.
- Centerless grinding to h9 tolerance; 100% UT per ASTM A388.
2. Seamless Tubes
- ESR billet extrusion at 1100 °C.
- Multi-pass cold pilger/draw to final dimensions.
- Hydrogen annealing for bright, passive ID/OD surface.
- 100% ECT + hydrostatic test on every tube.
3. Plates & Sheets
- Hot rolling + cold finish for gauge precision.
- Full anneal + pickling (White surface).
- UT per ASTM A578; flatness ≤3 mm/m; waterjet cut.
Industry Applications
| Industry | Component | Why C-2000 |
|---|---|---|
| Chemical Processing | Mixed-acid piping, switching-reagent vessels | Only alloy handling HCl→HNO₃ cycling |
| Pharmaceutical | CIP reactors, agitators | Survives alternating acid/alkali cleaning |
| Pollution Control | Wet scrubbers handling SOₓ/NOₓ mixtures | Cu-stabilized passive film in mixed flue gas |
| Oil & Gas | Sour gas wellhead components | NACE MR0175 compliant |
| Nuclear | Waste neutralization tanks | Long-term stability in mixed rad waste |
Quality Assurance: 7-Stage Protocol
- OES/PMI: Copper content (1.3–1.9%) confirmed on every heat.
- Hardness Test: Annealed state (≤100 HRB) verified.
- 100% UT: Per ASTM A388 on all bars and heavy plates.
- 100% ECT + Hydro: Every seamless tube tested.
- Grain Size: ASTM E112 No. 5–7 confirmed.
- Mechanical Test: Tensile/yield/elongation per ASTM B574.
- Heat-Number Traceability: Permanent marking + EN 10204 3.1 MTC; SGS/BV/TÜV welcome.
Frequently Asked Questions
Q1: What is Hastelloy C-2000 used for?
Mixed-acid chemical processing, pharmaceutical CIP/SIP reactors, pollution control scrubbers, and any application where process chemistry alternates between oxidizing and reducing media.
Q2: What is the density of Hastelloy C-2000?
8.50 g/cm³ (0.307 lb/in³).
Q3: What is the maximum service temperature?
Up to 1000 °C (1832 °F) for oxidation resistance. For aqueous corrosion, typical limit is 425 °C.
Q4: What is the melting point?
1335 °C to 1380 °C (2435 °F to 2515 °F).
Q5: What is the tensile strength?
≥ 690 MPa (100 ksi) in the annealed condition; typical 740–790 MPa.
Q6: What is the yield strength?
≥ 283 MPa (41 ksi); typical 320–380 MPa.
Q7: What is the elongation?
≥ 45% — exceptional ductility for cold forming.
Q8: What are the full mechanical properties?
UTS ≥690 MPa, Yield ≥283 MPa, Elongation ≥45%, Hardness ≤100 HRB, Density 8.50 g/cm³.
Q9: What heat treatment does it require?
Solution annealing at 1121 °C – 1149 °C followed by mandatory water quench.
Q10: What is unique about C-2000?
It contains 1.6% copper, enabling it to handle both oxidizing and reducing environments in a single alloy — something no C-276 or C-22 can do alone.
Q11: How does C-2000 compare to C-276?
C-2000 adds 23% Cr and 1.6% Cu, giving it far superior oxidizing acid resistance while maintaining C-276's reducing acid performance.
Q12: What is the price per kg?
Market range: approximately $40–92 USD/kg. Contact sales@hangboalloy.com for a real-time quote.
Q13: Is Hastelloy C-2000 weldable?
Yes — excellent weldability. Use matching ERNiCrMo-17 filler. Cu-stabilized chemistry prevents sensitization.
Q14: What product forms does Shanghai Hangbo supply?
Round bars (6–400mm), seamless tubes (OD 6–219mm), plates (1–100mm), sheets, and custom forgings.
Q15: How to verify genuine C-2000?
Check Copper (1.3–1.9%) on the MTC. If Cu is zero, it's C-22 or C-276. PMI on arrival confirms.
Contact Shanghai Hangbo Alloy Group
| Channel | Details |
|---|---|
| Website | www.nickel-alloy.com |
| Email (Sales) | sales@hangboalloy.com |
| Email (Tech) | hangbo@nickel-alloy.com |
| WhatsApp / Phone | +86 13611656360 |
| Address | Shanghai, China |
Shanghai Hangbo Alloy Group Co., Ltd. — Founded 2012 | ISO 9001:2015 | The Oxidation/Reduction Bridge Specialist | 32 Countries
