N10002 is a designation under the Unified Numbering System (UNS) in the United States, part of the Hastelloy family of alloys. Commonly referred to as Hastelloy C, it is a nickel-based alloy reinforced with molybdenum and chromium. Its equivalent German grade is 2.4819, and in China, it is designated as 0Cr15Ni60Mo16W5Fe5.

• As one of the earliest members developed within the Hastelloy series, Hastelloy C offers excellent resistance to aggressive corrosion and strong mechanical properties at elevated temperatures. It is commonly used in critical components operating in highly corrosive environments.

2.Chemical Composition (Typical Range, Weight Percent)

• Ni：Balance (~60%)

• Mo：15.0–17.0%

• Cr：14.5–16.5%

• Fe：4.0–7.0%

• W：3.0–4.5%

• Co：≤2.5%

• Mn：≤1.0%

• Si：≤1.0%

• C：≤0.02%

• V：≤0.35%

• This composition delivers corrosion resistance in both oxidizing and reducing environments, making the alloy particularly suitable for handling chlorides and various organic and inorganic acids.

3. Mechanical Properties (Typical Values in Solution-Annealed Condition)

• Tensile Strength (Rm)：≥690 MPa，High strength

• Yield Strength (Rp0.2)：≥310 MPa，Typical value

• Elongation (A)：≥40%，Excellent ductility

• Hardness：≈200 HB，Can be increased via cold working

• Service Temperature Range：-196°C to 1000°C，Suitable for cryogenic and high-temperature use

• The alloy maintains structural integrity and corrosion resistance during welding and high-temperature service, making it a dependable choice in critical applications.

4. Key Performance Highlights

（1）Exceptional Corrosion Resistance

• Withstands strong acids like sulfuric, hydrochloric, and phosphoric acids.

• Resists pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments.

• Stable in both oxidizing and reducing atmospheres.

（2）Outstanding High-Temperature Performance

• Maintains structural stability at temperatures up to 1000°C.

• Excellent oxidation and thermal fatigue resistance.

（3）Superior Weldability

• Compatible with TIG, MIG, and manual arc welding.

• Stable weld joints without the need for complex post-weld heat treatment.

（4） Excellent Cold Workability and Formability

• Suitable for turning, milling, stamping, and drawing.

• Cold working increases strength, ideal for applications requiring higher hardness.

5.Typical Applications

（1）Chemical & Petrochemical

Reactors, acid pipelines, heat exchangers, columns, storage tanks

（2）Marine Engineering

Seawater heat exchangers, offshore piping, desalination units

（3）Energy

Nuclear heat exchangers, boiler components, flue gas desulfurization systems

（4）Aerospace

High-temperature combustors, turbine casings, exhaust systems

（5）Pharmaceuticals & Environmental

Exhaust treatment units, corrosive gas towers, filtration systems

6. Comparison with Other Hastelloy Alloys

（1）Hastelloy C

• UNS Number：N10002

• Features：Classic type with high Mo, strong overall corrosion resistance

• Typical Applications：Chemical, heat exchangers

（2）Hastelloy C-276

• UNS Number：N10276

• Features：Enhanced resistance to pitting, crevice, and stress corrosion

• Typical Applications：Oxidizing and chloride-rich environments

（3）Hastelloy C-22

• UNS Number：N06022

• Features：Best all-around corrosion resistance and versatility

• Typical Applications：Pharmaceuticals, food, environmental systems

（4）Hastelloy X

• UNS Number：N06002

• Features：Focused on high-temperature oxidation resistance

• Typical Applications：Jet combustors, gas turbines

7. Processing and Usage Recommendations

（1）Machining: Use carbide tools and low-speed, high-feed methods to improve efficiency.

（2）Welding: Recommended filler materials include Hastelloy W and ERNiCrMo-3; post-weld heat treatment is generally not required.

（3）Heat Treatment: Solution annealing at approximately 1150°C followed by rapid cooling enhances overall performance.

（4）Corrosion Management: Regular inspection is advised for long-term use in harsh media environments.

8. Conclusion

Hastelloy C (N10002) is a versatile nickel-based alloy that combines exceptional corrosion resistance, high-temperature strength, and excellent workability. It is particularly well-suited for environments requiring superior chemical stability and has become a material of choice in modern chemical, energy, and marine equipment applications. It is undoubtedly one of the premium materials in engineering design for critical and demanding operations.

9. About Suzhou Bolaibao Metal

As a professional supplier of high-performance metal materials, Suzhou Bolaibao Metal is committed to the development and distribution of advanced alloys such as nickel-based alloys, titanium alloys, and stainless steels. We supply N10002 materials in full compliance with international standards, along with selection guidance, processing consultation, and technical support to help customers achieve long-term performance and stability under extreme service conditions.

Contact: +86 15366282159
Email: sale@bolaibao1.com
Website: www.blbszmetal.com