Hastelloy C2000 (Alloy C-2000, UNS N06200) Forging Parts

Leading China Manufacturer of Hastelloy C2000 Forgings

Jiangsu Liangyi Co., Limited, established in 1997 and strategically located in Chengchang Industry Park, Jiangyin City, Jiangsu Province, China, is a professional ISO 9001:2015 certified forging manufacturer specializing in open die forging parts and seamless rolled rings in UNS N06200 alloy (commonly known as Hastelloy® C2000 / Alloy C-2000). With over 25 years of specialized nickel alloy forging experience, we have become a trusted global supplier of high-performance corrosion-resistant forgings, serving customers in more than 50 countries across Asia, Europe, North America, South America, the Middle East, Oceania, and Africa.

Our 80,000 m² advanced manufacturing plant in Jiangyin has modern forging equipment, including 2,000‑ton, 4,000‑ton, and 6,300‑ton hydraulic forging presses, 1‑meter and 5‑meter seamless rolling machines, and ten computer‑controlled heat treatment furnaces. We have an annual production capacity of 120,000 tons and can produce Hastelloy C2000 forgings from 30 kg up to 30,000 kg. We provide a full range of service from raw material melting , forging , heat treatment to high‑precision CNC machining, based on your custom drawings and technical requirements.

Our Jiangyin, China Factory Advantages for Hastelloy C2000 Production

• Advanced Melting Technology: We make Hastelloy C2000 by melting it twice (VIM+VAR) or three times (VIM+ESR+VAR) to make sure that all the materials have high purity, consistent grain matrix and  mechanical properties.
• Complete In-House Capabilities: Provied a full range of processes, from checking raw materials , melting to final NDT testing and packaging, to keep quality control strict and lead times short.
• Comprehensive Testing Facilities: We have advanced nondestructive testing (NDT), chemical composition testing, mechanical property testing, and metallographical testing equipment.
• Global Export Expertise: We know international standards well,including ASTM, AMS, API 6A, DIN, EN, and JIS, and experienced in handling international shipping and customs clearance.
• Competitive Pricing & High Quality: Our company is located in China's industrial heartland with access to efficient supply chains, offering premium-quality Hastelloy C2000 forgings at globally competitive prices.

 In addition, we can produce Hastelloy C2000 forgings to the these standards upon customer request: API 6A for wellhead and Christmas tree equipment. We include an EN 10204 3.1 mill test certificate with every order as standard, and can arrange EN 10204 3.2 certification with a third‑party inspector’s signature if needed. We can also supply parts meeting NACE MR0175 / ISO 15156 for sour service, along with the required test reports. Please note: these standards and documents are applied to individual orders, and are not company‑wide certifications held by Jiangsu Liangyi.

Hastelloy C2000 Forged Product Shapes & Manufacturing Capabilities

We produce a full range of Hastelloy C2000 forged steel products in all kinds of custom shapes and sizes to meet the most demanding industrial application requirements. All products are made based on international standards and can be precision machined to your exact specifications with tight tolerances.

Forged Bars & Rods

• Hastelloy C2000 forged round bars, square bars, flat bars, and rectangular bars
• Custom step shafts, gear shafts, splined shafts, turbine shafts, and crankshafts
• Maximum diameter is up to 2,000 mm (2 meters); maximum length is up to 15 meters
• Single-piece weight is up to 30 tons
• Available in double melted (VIM+VAR) and triple melted (VIM+ESR+VAR) grades

Seamless Rolled Rings

• Hastelloy C2000 seamless rolled rings and open die forged rings
• Gear rings, slewing bearing rings, contoured rolled rings, and flanged rings
• Maximum outer diameter is up to 6,000 mm (6 meters); maximum height is up to 1,500 mm
• Single-piece weight is up to 30 tons
• It is the best choice material for important rotating and pressure applications in oil and gas and power generation

Hollow Forgings

• Hastelloy C2000 forged hubs, housings, shells, sleeves, and bushes
• Seamless hollow bars, pipes, tubes, and heavy wall cylinders
• Outer diameter capacity is up to 3,000 mm; wall thickness is up to 500 mm
• Great mechanical properties and corrosion resistance compared to welded tubes
• All parts are checked by ultrasonic testing (UT) 

Other Custom Forged Components

• Hastelloy C2000 forged discs, disks, blocks, and plates
• Forged flanges, tube sheets, baffle plates, and nozzles
• Custom forged parts up to 3,000 mm in diameter
• Complete CNC machining, grinding, and surface treatment services available
• Full material traceability from melt to finished part

Explore our full range of forged products to find the best solution for your industrial project.

Hastelloy C2000 (UNS N06200) Material Performance & Key Advantages

 Hastelloy C2000 is a versatile nickel-chromium-molybdenum-copper alloy that can resist many corrosive chemicals very well, including concentrated sulfuric acid, hydrochloric acid, and other strong acids. It performs well in both reducing and oxidizing environments, and effectively resists local corrosion such as pitting, crevice corrosion, and stress corrosion cracking.
Adding 1.3–1.9% copper to the alloy greatly improves its resistance to sulfuric acid and hydrochloric acid, making Hastelloy C2000 one of the most versatile and cost-efficient nickel alloys for chemical processing. Compared to Hastelloy C276 and C22, it provides better resistance to reducing acids while still protecting well against oxidizing environments.

Hastelloy C2000 vs. Other Common Nickel Alloys

Key Advantages of Hastelloy C2000 Forgings

• It has excellent resistance to concentrated sulfuric acid (up to 98%) and hydrochloric acid at different concentrations and temperatures
• Excellent resistance to both reducing and oxidizing chemical environments — a main distinction versus C276 and C22
• Great resistance to localized corrosion including pitting, crevice corrosion, and chloride-induced stress corrosion cracking (SCC)
• Good mechanical properties at both room temperature and elevated temperatures up to 650 °C
• Excellent weldability and fabricability using standard welding techniques
• Low carbon content (≤ 0.01%) minimizes carbide precipitation during welding, maintaining corrosion resistance in the heat-affected zone (HAZ)

Hastelloy C2000 (UNS N06200) Chemical Composition

Our Hastelloy C2000 forged materials are produced using advanced vacuum melting processes to guarantee the highest purity and material quality. We offer both double melted (VIM+VAR) and triple melted (VIM+ESR+VAR) options. Triple melted material is strongly recommended for important applications needing maximum purity, consistent grain matrix, and great mechanical properties.

We also produce a wide range of other nickel alloy forgings including Hastelloy C276, Hastelloy C22, Hastelloy X, Inconel 600, Inconel 601, Inconel 625, Inconel 718, Incoloy 800, Incoloy 825, Incoloy 925, Monel 400, and Monel K500.

Hastelloy C2000 Physical & Thermal Properties

The following physical and thermal property data for Hastelloy C2000 (UNS N06200) is essential for engineering design, thermal analysis, and equipment specification. All values are for solution-annealed material unless otherwise noted.

Elevated Temperature Mechanical Properties

Hastelloy C2000 Corrosion Resistance Data

 Hastelloy C2000 has excellent corrosion resistance in harsh chemical environments. The corrosion rate reference data below comes from published technical data by Haynes International (the Hastelloy C-2000 Alloy Datasheet) and is used as a guide for choosing materials. Real performance in use depends on temperature, flow speed, surface finish, air exposure, and the presence of oxidizing substances or impurities. Corrosion rates below 0.127 mm/year (5 mpy) are usually acceptable for industrial process equipment.

Corrosion Rates in Sulfuric Acid (H₂SO₄)

Corrosion Rates in Hydrochloric Acid (HCl)

Pitting Resistance Equivalent Number (PREN)

The Pitting Resistance Equivalent Number (PREN) is a widely used formula to estimate an alloy's resistance to pitting corrosion in chloride-containing environments:

PREN = %Cr + 3.3 × %Mo + 16 × %N

For Hastelloy C2000 (using nominal composition: 23% Cr, 16% Mo, ~0% N):

PREN (C2000) ≈ 23 + (3.3 × 16) = 23 + 52.8 = 75.8

For comparison: Hastelloy C276 PREN ≈ 65; 316L stainless steel PREN ≈ 24. A higher PREN indicates superior pitting corrosion resistance. Hastelloy C2000's PREN of ~76 places it among the most pitting-resistant alloys commercially available.

Hastelloy C2000 Applicable International Standards

Hastelloy C2000 (UNS N06200) forged products made by Jiangsu Liangyi meet a comprehensive set of international standards. The following cross-reference table covers the most commonly required standards for global procurement, engineering, and inspection purposes.

We are experienced in producing Hastelloy C2000 forgings to any combination of the above standards. Please specify your needed standards and certifications when requesting a quotation. Our engineering team can advise on the most appropriate standard combinations for your specific application and jurisdiction.

Hastelloy C2000 Welding Guidelines & Recommendations

Hastelloy C2000 is very easy to weld and works with most common welding methods. Because it contains high levels of nickel and molybdenum, though, certain steps should be followed to make strong welds and keep the alloy’s excellent corrosion resistance. These guidelines are based on published data from Haynes International and our own production experience.

Recommended Welding Processes

• Gas Tungsten Arc Welding (GTAW / TIG): It is the preferred process for Hastelloy C2000; provides the best control of heat input and produces the highest quality welds with minimal contamination.
• Gas Metal Arc Welding (GMAW / MIG): It is acceptable for thicker sections; higher deposition rate than GTAW. Use short-circuit or pulsed transfer modes.
• Shielded Metal Arc Welding (SMAW / Stick):This method is fine for making repairs in the field and for joints where other methods won't work.
• Plasma Arc Welding (PAW): It is suitable for precise, automated welding of thin sections.
• Submerged Arc Welding (SAW): It's not usually a good idea because it puts in too much heat, which can make carbide precipitation and sensitization happen.

Recommended Filler Metals

Key Welding Procedure Parameters

• Preheat: No preheat is needed for Hastelloy C2000 base metal with thickness ≤ 50 mm. For thicker sections, keep a preheat of 20–50 °C to remove surface moisture.
• Interpass Temperature: Keep the maximum interpass temperature below 150 °C (300 °F) to minimize heat input and avoid carbide precipitation.
• Shielding Gas: For GTAW, use 100% argon or argon with 5–10% helium. For GMAW, argon plus 5% to 20% helium is fine. Avoid CO₂ and mixtures with more than 2% CO₂, because these can cause oxidation and holes.
• Back Purging: Use 100% argon back purging gas for root pass welding when full corrosion resistance is required on the back side of the weld.
• Heat Input: Keep heat input as low as practical (typically < 1.5 kJ/mm) to minimize the width of the heat-affected zone (HAZ) and reduce the risk of sensitization.
• Post-Weld Cleaning: Remove all oxide scales from the weld and HAZ area by grinding, wire brushing (with stainless steel or nickel alloy brushes only — never carbon steel), and/or passivation to restore full corrosion resistance.

Post-Weld Heat Treatment (PWHT)

 Unlike carbon steels, Hastelloy C2000 does not need heat treatment after welding in most uses. But for important applications where top corrosion resistance is a must — like nuclear parts and equipment handling highly concentrated acids — we recommend a solution anneal after welding at1,120 – 1,149 °C (2,048 – 2,100 °F) , followed by quick water cooling. This process dissolves any hard carbides formed during welding and brings back the alloy’s full corrosion resistance.

Hastelloy C2000 Forging Process & Heat Treatment

 We apply a strict and controlled forging process to make sureHastelloy C2000 forged parts meet the  international quality standards. Our metallurgists and engineers have  experience of  nickel alloys and can help you determine the best heat treatment and forging methods for your project.

Our Rigorous Hastelloy C2000 Forging Process

1. Raw Material Inspection: Test all incoming Hastelloy C2000 raw materials for chemical composition and mechanical properties before entering production.
2. Controlled Heating: The material  is heated to the forging temperature (1,150 – 1,200 °C) in computer-controlled atmosphere furnaces to prevent oxidation and decarburization.
3. Precision Forging: The material is forged using hydraulic presses or electro-hydraulic hammers to achieve the desired shape and consistent fine-grain matrix.
4. Intermediate Inspection: The forged part is given a preliminary visual inspection and dimensional check before heat treatment.
5. Controlled Heat Treatment: The forged part is given solution annealing to improve mechanical properties and corrosion resistance.
6. Precision Machining: The part is machined to final dimensions using advanced CNC lathes, milling machines, and machining centers.
7. Comprehensive Final Inspection: The finished part is given rigorous NDT testing, mechanical property testing, and dimension test.
8. Protective Packaging & Shipping: The part is carefully packaged with protective materials to prevent damage during international shipping.

Precision Solution Annealing Heat Treatment Process

All Hastelloy C2000 forged products go through solution annealing to get improved mechanical properties and maximum corrosion resistance:

• Solution annealing temperature: 1,120 – 1,149 °C (2,048 – 2,100 °F)
• Duration: Depending on the thickness of the semi-finished product (typically 30–60 minutes per inch of thickness)
• Cooling method: Rapid quenching in water, compressed air, or protective gas to prevent carbide precipitation and maintain maximum corrosion resistance

Typical Mechanical Properties (Solution Annealed Delivery Condition)

Hastelloy C2000 Forging Parts Applications & Global Industry Success Cases

Hastelloy C2000 forged parts are widely used in industries where great corrosion resistance is important to equipment reliability and safety. Our Jiangyin, China factory has supplied thousands of high-quality Hastelloy C2000 forgings to customers around the world for various demanding applications.

Quality Control & Comprehensive Testing Procedures

 Quality is our most important thing at Jiangsu Liangyi.  every UNS N06200 forged part  is tested at every step of the whole process, which makes sure it meets international quality standards and the clients' needs. We have ISO 9001:2015 certification for our quality management system. We are experienced in producing forgings to API 6A, ASTM, AMS, DIN, EN, and JIS standards upon customer specification.

Non-Destructive Testing (NDT)

• Visual inspections (Direct and Indirect) — 100% of all parts
• Magnetic Particle Testing (MT) — For detecting surface and near-surface defects
• Dye Penetrant Testing (PT) — Visible and Fluorescent — For detecting surface defects
• Ultrasonic Testing (UT) — 100% of all parts — For detecting internal defects
• Radiographic Testing (RT) — For important applications needing maximum defect detection

Metallurgical & Mechanical Testing

• Macro and micro metallographic examination — To evaluate grain matrix and inclusions
• Grain size determination — To guarantee proper forging and heat treatment
• Charpy V-notch impact testing — To evaluate toughness at various temperatures
• Hardness testing (Micro and Macro Vickers, Brinell) — To verify heat treatment effectiveness
• Tensile testing at room and elevated temperatures — To verify mechanical properties
• Chemical composition analysis — Using optical emission spectrometry (OES) and combustion analysis
• Intergranular corrosion testing (IGC) — Available upon customer request

Key Testing Standards

• ASTM E10-12: It is the standard Test Method for Brinell Hardness of Metallic Materials
• ASTM A370-12: Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• ASTM E23-07a: Standard Test Methods for Notched Bar Impact Testing of Metallic Materials
• AMS 2315G: Determination of Delta Ferrite Content in Austenitic Stainless Steel
• ASTM E45-05: Standard Test Methods for Determining the Inclusion Content of Steel
• ASTM E112-10: Standard Test Methods for Determining Average Grain Size
• ASTM E837: Standard Test Method for Determining Residual Stresses by the Hole-Drilling Strain-Gage Method
• ASTM A388: Standard Practice for Ultrasonic Examination of Steel Forgings

Marking & Full Material Traceability

Each finished Hastelloy C2000 forged part is clearly and permanently stamped with:

• Purchaser's part number
• Purchaser's purchase order number
• Individual identification number
• Heat number (for full material traceability from melt to finished part)

All markings are surrounded by a frame or painted with white durable paint for easy identification. We provide full Mill Test Certificates (MTC) per EN 10204 3.1 as standard with every shipment, detailing all test results and material properties. EN 10204 3.2 (co-signed by an independent third-party inspector such as Bureau Veritas, SGS, or TÜV) is available upon request.

Frequently Asked Questions (FAQ) About Hastelloy C2000 Forgings