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What is Hastelloy?

The Hastelloy alloy is a nickel-based alloy that has a high corrosion resistance as well as being able to withstand high temperatures, high stresses, and often highly oxidizing atmospheric conditions. You can buy it in the form of plate, sheet, bar, pipe, tube, etc., and can use it in a wide variety of applications.

An extremely strong and corrosion-resistant nickel alloy known as Hastelloy is widely used for highly acidic and corrosive chemicals. The addition of chromium and molybdenum makes Hastelloy metal even stronger and more corrosion resistant. Hastelloy metal is ductile and, as a result, it can be formed easily.

It is commonly known that Hastelloy is a steel that is manufactured by combining raw elements while still in a hot liquid state. The Hastelloy material consists of 1% to 25% chromium, 5% to 30% molybdenum, 0% to 30% iron, and a balanced nickel content. Other elements may also be added to the material, such as carbon, tungsten, vanadium, and titanium.

In addition to corrosion resistance, Hastelloy is also resistant to high temperatures. It is a nickel superalloy containing nickel, chromium, and molybdenum as its main constituent elements. In this article, we will discuss the properties, applications, and grades of Hastelloy, a material widely used in the chemical, pharmaceutical, and oil & gas industries. It is being used in many industries including petrochemicals, pharmaceuticals, and oil & gas.

The nickel alloy Hastelloy has excellent corrosion resistance, but it also contains other chemical elements like chromium, molybdenum, and other metals. It is a highly resistant alloy that can withstand high temperatures as well as corrosion for a long time. The oil and gas industry uses Hastelloy C276 as one of the grades of Hastelloy hastelloy vs stainless steel, what is hastelloy, Hastealloy, 304ss vs 316ss, hastelloy metal, Hatelloy, Hastelloy, hastelloy c276 equivalent material, 316ss composition, ss304 vs ss316, hastaloy.

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What does 316 mean in terms of stainless steel?

The 316 grade of austenitic stainless steel has a molybdenum concentration ranging from 2% to 3%. It is the standard grade for molybdenum-bearing steels. In addition to the metal's resistance to corrosion and pitting, molybdenum increases its resilience to high temperatures as well. Grade 316 is the standard molybdenum-bearing steel.

A number of common items made of type 316 stainless steel include exhaust manifolds, furnace components, heat exchangers, jet engine parts, pharmaceutical and photographic equipment, valves and pumps, chemical processing equipment, tanks, and evaporators. Also, it is used in machinery that processes pulp, paper, and textiles, as well as any components exposed to maritime environments.

As a result of its high chromium content, stainless steel has excellent corrosion resistance. As a result, stainless steel usually contains approximately 10.5 percent chromium and 1.2 percent carbon. The corrosion resistance increases as the chromium level rises. Molybdenum can also enhance acid resistance by adding a small amount to this mixture. Stainless steel sheets, plates, bars, wires, tubes, and other products are available.

Compared to stainless steel, Hastelloy has superior corrosion resistance, which is one of the main differences between Hastelloy and stainless steel.

The Hastelloy alloy and the stainless steel alloy are two such alloys that are capable of withstanding corrosion because they are chemical mixes containing metals as a primary component and nonmetals as a minor component. The unique composition of Hastelloy, which contains a lot more nickel than stainless steel, is said to make it more corrosion resistant than stainless steel as a result. 

For example, Hastelloy is used in chemical processing, aerospace, and pharmaceutical industries when it comes to these materials. In contrast, stainless steel is used in architecture, plumbing, pulp and paper, chemical processing, food and beverage processing, and so on.


What is Hastelloy used for?

Due to its outstanding corrosion resistance, Hastelloy is an excellent choice for moderate to severe corrosive environments where product life is important because of its outstanding corrosion resistance. As well as being commonly used to manufacture pipes and valves in the chemical, petrochemical, and nuclear industries, it is also commonly used for reactor vessels as well.

As with any type of alloy, Hastelloy grades are available, but among them the C276 is one of the most popular grades. Coated with a protective layer, it can be used in the harsh environments referenced above, as well as in the production of paper, pulp, and waste treatment.

What is ss316 used for?

There are many uses for type 316 stainless steel, such as the construction of exhaust manifolds, furnace parts, heat exchangers, jet engine parts, pharmaceutical and photographic equipment, valves and pumps, chemical processing equipment, tanks, and evaporators.

How is Hastelloy made?

There are different grades, each containing a specific chemical composition due to the fact that Hastelloy is actually a metal alloy, which is made by combining raw elements while they are in a hot liquid state. 

 It is possible for the mix to contain between 1% and 25% chromium, between 5% and 30% molybdenum, and between 0% and 30% iron, with the balance being made up of nickel. Other additives can include carbon, tungsten, vanadium and titanium, depending on the grade.

As soon as the metals have been combined, melted, and mixed together, they can be cast accordingly according to how they are to be manufactured further.

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How is ss316 made?

A duplex ferritic-austenitic stainless steel is produced by adding more chromium and nickel to regular martensitic stainless steel in order to promote a duplex ferritic-austenitic microstructure. Since these steels do not have a constant ferritic and austenitic microstructure, heat treatment is required to make them wear-resistant.

What type of material is Hastelloy?

The corrosion-resistant nickel alloy Hastelloy contains chromium and molybdenum, along with other chemical elements. Hastelloy C276 is one of the grades of Hastelloy used in the oil and gas industry, and it has exceptional corrosion resistance as well as high temperature resistance.

What type of material is ss316 ?

Stainless steel Alloy 316/316L (UNS S31600/ S31603) is an austenitic stainless steel with chromium, nickel, and molybdenum alloys made to provide improved corrosion resistance in moderately corrosive environments compared to Alloy 304/304L in corrosive environments containing chlorides or halos.

What grade of steel is 316?

316 stainless steel is the 2nd most common austenitic grade in the world, second only to 304 in terms of commercial importance. 316 stainless steel contains molybdenum as an additive, giving it improved corrosion resistance. This is particularly evident in areas where chlorides are present, especially pitting and crevice corrosion.

Hastelloy Grades

  • Hastelloy C276
  • Hastelloy C22
  • Hastelloy B2
  • Hastelloy B3
  • Hastelloy X

Hastelloy’s Properties

  • Outstanding corrosion resistance and high-stress resistance
  • Excellent resistance to stress corrosion cracking
  • Acid resistance is high.
  • Ease of fabrication Ease of welding
  • High oxidation resistance (at high temperatures)

In the alloy, nickel is the main component, with small amounts of other metals such as chrome and molybdenum added to it. A complex manufacturing process consists of mixing tungsten, carbon, titanium, aluminium, manganese, copper, cobalt, chrome, and other chemical components with basic ingredients. The aerospace, chemical processing, and pharmaceutical industries are just a few of the industries that make use of Hastelloy.

Applications of Stainless steel 316

Initially developed for use in paper mills Stainless steel 316 is now typically used in:

  • Food processing equipment
  • Brewery, dairy, and pharmaceutical production equipment
  • Chemical and petrochemical equipment
  • Laboratory benches & equipment
  • Coastal architectural panelling
  • Coastal balustrading
  • Boat fittings
  • Chemical transportation containers
  • Heat exchangers
  • Mining screens
  • Nuts and bolts
  • Springs, nuts, bolts and screws
  • Medical implants
  • Sinks and splashbacks
  • Saucepans
  • Cutlery and flatware
  • Sanitaryware and troughs
  • Tubing

Applications of Hastelloy

Hydrochloric acid, aluminium chloride catalysts, and other strongly reducing chemicals are all resistant to this material. Inert and vacuum atmospheres provide excellent high-temperature strength.

Hastelloy B2 is a nickel-molybdenum alloy that is especially well suited for equipment exposed to decreasing chemical conditions. Sulfuric, phosphoric, hydrochloric, and acetic acid have been used in the chemical process sector. Depending on the environment, temperatures might range from ambient to 1500°F.