Is Alloy C the Same as Hastelloy?

Is_Alloy_C_the_Same_as_Hastelloy

Is inconel magnetic?

Introduction

While Alloy C and Hastelloy C are often used interchangeably, it is important to note that “Hastelloy” is a trademark for a broader range of high-performance alloys. Alloy C specifically refers to one of these alloys, known for its remarkable corrosion resistance and durability in extreme environments.

What is Alloy C

Alloy C, often referred to as Hastelloy C, is a high-performance nickel-chromium-molybdenum alloy known for its exceptional corrosion resistance. It is primarily used in chemical processing, petrochemical, and power generation industries due to its ability to withstand pitting, stress corrosion cracking, and oxidizing atmospheres.

What is Hastelloy Material?

Hastelloy is a trademarked name for a series of high-strength, nickel-based alloys produced by Haynes International, Inc. These alloys are renowned for their excellent resistance to corrosion and high-temperature strength. The Hastelloy family includes several different alloys, each tailored for specific applications, with Hastelloy C being one of the most well-known variants.

Composition Comparison of Hastelloy and Alloy C

——Is Alloy C the Same as Hastelloy?

ElementHastelloy C-276 (wt%)Hastelloy B-3 (wt%)Alloy C (wt%)
Nickel (Ni)576558-70
Chromium (Cr)16114-16
Molybdenum (Mo)162815-17
Iron (Fe)534-7
Tungsten (W)43-4.5
Cobalt (Co)232 max
Manganese (Mn)111 max
OthersTrace elementsTrace elementsTrace elements

 

Mechanical Properties Comparison of Hastelloy and Alloy C

——Is Alloy C the Same as Hastelloy?

PropertyHastelloy C-276Hastelloy B-3Alloy C
Tensile Strength (MPa)690-790700-800690-790
Yield Strength (MPa)275-355300-400275-355
Elongation (%)40-5040-5040-50
Hardness (Rockwell C)20-3020-3020-30

Advantages of Hastelloy

  • Superior resistance to a wide range of severe environments.
  • High mechanical strength and durability.
  • Excellent performance in high-temperature applications.
  • Resistance to oxidizing and reducing conditions.

Advantages of Alloy C

  • Outstanding resistance to pitting and stress corrosion cracking.
  • Effective in both oxidizing and reducing acids.
  • High resistance to chloride-induced pitting and crevice corrosion.
  • Versatile in various industrial applications.

Common Features of Alloy C and Hastelloy

——Is Alloy C the Same as Hastelloy?

  • Both are nickel-chromium-molybdenum alloys.
  • High resistance to corrosion and oxidation.
  • Suitable for use in extreme environments.
  • Comparable mechanical properties.

Application Comparison of Alloy C and Hastelloy

——Is Alloy C the Same as Hastelloy?

ApplicationHastelloy C-276Hastelloy B-3Alloy C
Chemical ProcessingHigh-corrosion areasReducing environmentsHigh-corrosion areas
PetrochemicalHarsh environmentsHarsh environmentsHarsh environments
Power GenerationHeat exchangers, reactorsHeat exchangers, reactorsHeat exchangers, reactors
AerospaceTurbine engines, exhaustsTurbine engines, exhaustsTurbine engines, exhausts
Marine EngineeringSeawater componentsSeawater componentsSeawater components

Common Shapes of Alloy C and Hastelloy

——Is Alloy C the Same as Hastelloy?

ShapeHastelloy C-276Hastelloy B-3Alloy C
Sheets and PlatesYesYesYes
Bars and RodsYesYesYes
WiresYesYesYes
Tubes and PipesYesYesYes
Fittings and FlangesYesYesYes

Conclusion

——Is Alloy C the Same as Hastelloy?

While Alloy C and Hastelloy C are often used interchangeably due to their similar compositions and properties, it is crucial to recognize that Hastelloy represents a broader range of high-performance alloys. Alloy C specifically refers to one of these high-performing variants, known for its remarkable corrosion resistance and durability in extreme conditions. Both materials offer unique advantages and are utilized across various industries for their exceptional performance characteristics.

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