Alloy C-276 Steel

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Overview of Alloy C-276 Thép

Alloy C-276, also known as Hastelloy C-276, is a nickel-molybdenum-chromium superalloy with tungsten added to improve its overall corrosion resistance. This alloy is known for its excellent performance in a wide range of aggressive environments, making it a go-to material for chemical processing, petrochemical industries, and other applications requiring resistance to corrosion and high temperatures.

Alloy C-276 stands out due to its:

  • Outstanding resistance to pitting and crevice corrosion
  • Excellent resistance to both oxidizing and reducing acids
  • High resistance to chloride-induced stress corrosion cracking
  • Versatility in various chemical environments

Whether you’re building equipment for chemical processing plants or dealing with aggressive marine environments, Alloy C-276 has got you covered.

Alloy C-276 Steel

Chemical Composition of Alloy C-276 Thép

Understanding the chemical makeup of Alloy C-276 is crucial for grasping why it’s so effective in harsh environments. Here’s a detailed look at its composition:

Nguyên tốTỷ phần trăm
Niken (Ni)57.0 min
Molypden (Mo)15.0 – 17.0
Crôm (Cr)14.5 – 16.5
Sắt (Fe)4.0 – 7.0
Vonfram (W)3.0 – 4.5
Cobalt (Co)2.5 max
Manganse (Mn)1.0 max
Vanadi (V)0.35 max
Silicon (Si)0.08 max
Phốt pho (P)0.04 max
Carbon (C)0.01 max
Lưu huỳnh (S)0.03 max

The combination of these elements in specific proportions gives Alloy C-276 its robust corrosion resistance and mechanical properties.

Mechanical Properties of Alloy C-276 Thép

When choosing a material, it’s essential to consider its mechanical properties to ensure it meets the required performance standards. Alloy C-276’s mechanical properties are as follows:

Độ bền kéo690 MPa (min)
Yield Strength (0.2% offset)283 MPa (min)
Elongation40% (min)
Độ cứng100 HRB (max)
Density8.89 g/cm³

These properties make Alloy C-276 suitable for applications that demand high strength and durability under harsh conditions.

Applications of Alloy C-276 Steel

Alloy C-276 is widely used in various industries due to its exceptional corrosion resistance and mechanical properties. Here are some key applications:

Ngành công nghiệpApplication
Xử lý hóa chấtReactors, heat exchangers, evaporators, and pipelines exposed to aggressive chemicals.
Oil and GasComponents for sour gas service and offshore oil and gas drilling platforms.
Power GenerationFlue gas desulfurization systems, scrubbers, and ducting.
PharmaceuticalProduction equipment and piping in pharmaceutical plants.
MarineMarine engineering components and equipment exposed to seawater.
Không gianEngine components and exhaust systems in aircraft.

Alloy C-276’s versatility makes it a preferred choice across these diverse fields.

Heat Treatment of Alloy C-276 Thép

Proper heat treatment is essential to achieve the desired properties in Alloy C-276. Here’s how it’s typically done:

ProcessTemperature RangePurpose
Solution Annealing1121°C – 1177°C (2050°F – 2150°F)To dissolve precipitated phases and restore ductility.
Cooling MethodRapid air cooling or water quenchingTo prevent the formation of detrimental phases.

The precise control of heat treatment processes ensures that Alloy C-276 retains its excellent properties.

Suppliers and Pricing of Alloy C-276 Steel

Finding reliable suppliers and understanding pricing is crucial when sourcing Alloy C-276. Here’s a snapshot:

Nhà cung cấpLocationPhạm vi giá (theo kg)
United States$50 – $70Local and international suppliers
Europe€45 – €65Reputable metal suppliers
Asia¥350 – ¥450Major industrial suppliers

Prices can vary based on market demand, quantity, and specific requirements, so it’s best to request a quote for accurate pricing.

Comparing Advantages and Disadvantages of Alloy C-276 Thép

While Alloy C-276 offers numerous benefits, it’s essential to weigh its advantages against its disadvantages.

Ưu điểmDisadvantages
Superior corrosion resistanceHigh cost
Versatility in various environmentsDifficult to machine
Cường độ và độ bền caoRequires special welding techniques
Resistance to pitting and crevice corrosionLimited availability in some regions

Understanding these pros and cons helps in making informed decisions about using Alloy C-276 in your projects.

Alloy C-276 Steel

Câu hỏi thường gặp

Here’s a handy FAQ section to address common questions about Alloy C-276:

What is Alloy C-276 primarily used for?It’s used in chemical processing, oil and gas, power generation, and marine applications due to its exceptional corrosion resistance.
Can Alloy C-276 be welded?Yes, but it requires special techniques and expertise to ensure proper weld quality.
Is Alloy C-276 resistant to stress corrosion cracking?Yes, it has excellent resistance to stress corrosion cracking, especially in chloride environments.
How does Alloy C-276 compare to stainless steel?Alloy C-276 offers superior corrosion resistance and mechanical properties compared to most stainless steels, but it is also more expensive.
What are the main elements in Alloy C-276?Nickel, molybdenum, chromium, and tungsten are the primary elements.


Alloy C-276 is an outstanding material known for its superior corrosion resistance, strength, and versatility in various aggressive environments. While it comes at a higher cost and requires specialized handling, its benefits often outweigh the disadvantages, making it a top choice for critical applications across multiple industries. By understanding its chemical composition, mechanical properties, applications, and proper handling techniques, you can effectively leverage Alloy C-276 to meet the demanding needs of your projects.

Whether you’re dealing with aggressive chemicals, harsh marine conditions, or high-temperature environments, Alloy C-276 stands out as a reliable and robust material. Make sure to source it from reputable suppliers and follow proper heat treatment and machining practices to maximize its performance and longevity.

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