Jul 08, 2025 Leave a message

What is the difference between Hastelloy B3 tube and C22 Alloy pipe?

 
Hastelloy B3 Tube and C22 Alloy Pipe
 
Hastelloy b3 round tube
 

What is the difference between Hastelloy B3 Tube  and C22 Pipe?

Hastelloy B3 performs well in reducing environments and is often used in chemical processing and oil and gas refining. On the other hand, Hastelloy C22 exhibits excellent resistance to oxidizing acids and is the material of choice for nitric acid production and waste incineration.

 

What is Hastelloy B3 Pipe?

Hastelloy B-3 is a nickel-molybdenum alloy that offers excellent resistance to pitting, corrosion and stress corrosion cracking, and better thermal stability than alloy B-2. In addition, this nickel-steel alloy offers excellent resistance to tool mark and heat affected zone corrosion.

Thick wall Hastelloy b3 tube
Cold-drawn Hastelloy c22 seamless pipe
 

What is Hastelloy C22 Pipe?

Hastelloy C-22 is a widely used nickel-chromium-molybdenum alloy that has better overall corrosion resistance than other nickel-chromium-molybdenum alloys currently on the market, including Hastelloy C-276, C-4, and A625. C-22 alloy has excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.

 

What is the difference between Hastelloy B2 Pipe and C22 Pipe?

Hastelloy C22 has slightly higher strength and hardness than B2. This increased strength makes C22 ideal for applications that require higher mechanical loads. However, it is worth noting that the increase in strength may come at the expense of slightly reduced ductility.

Hastelloy b3 seamless pipe

Hastelloy B3 Pipe vs C22 Pipe– Composition

The main difference between Hastelloy B3 Pipe and C22 Pipe is their chemical composition. Hastelloy B3 Pipe is mainly composed of nickel, molybdenum and cobalt. The molybdenum content in Hastelloy B3 is higher than that in Hastelloy C22 Pipe, making it more corrosion resistant in reducing environments. On the other hand, Hastelloy C22 Pipe has a higher nickel and chromium content, while also containing molybdenum and tungsten, making it more corrosion resistant in oxidizing environments.

Hastelloy B3 Pipe vs C22 Pipe Corrosion Resistance

Both Hastelloy B3 Pipe and C22 Pipe have excellent corrosion resistance, but they exhibit different toughness under different conditions. Hastelloy B3 Pipe is particularly suitable for applications involving reducing acids, such as sulfuric, phosphoric and hydrochloric acids. Its high molybdenum content gives it excellent resistance to pitting and crevice corrosion. In contrast, Hastelloy C22 Pipe is known for its resistance to oxidizing acids (such as nitric acid) and oxidizing salts. Its chromium content helps form a protective oxide layer, which protects the alloy from corrosion.

Hastelloy B3 Pipe vs C22 Pipe – Mechanical Properties

In terms of mechanical properties, Hastelloy C22 Pipe generally has higher strength and hardness than Hastelloy B3 Pipe. This is due to the differences in alloying elements and their contribution to the material's microstructure. The higher nickel and chromium content of Hastelloy C22 Pipe, along with molybdenum and tungsten, make it a stronger and more durable alloy. Hastelloy B3 Pipe, while not as strong as C22 Pipe, still has adequate mechanical properties for many applications.

Hastelloy seamless pipe

 

About Gnee Steel

Gnee Steel is a supplier of Hastelloy B3 And C22 Alloy, covering tubes: Seamless tubes: Size: 4 - 219 mm; Thickness: 0.5 - 20 mm; Welded tubes: Size: 5.0 - 1219.2 mm; Thickness: 0.5 - 20 mm, Plates: Plate thickness 0.1 to 100 mm; Plate width 10-2500 mm, Strips, Alloy round bar sizes: diameter 3-800 mm;, Flat bar sizes: thickness 2-100 mm; Width: 10-500 mm, Hexagonal bar sizes: 2-100 mm;, Wire and extruded profiles. We work with steel mills to provide customers with 625 alloy, and its products meet or exceed many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells Hastelloy B3 And C22 Alloy, Tubes, Pipes, Plates, Strips, Plates, Round Bars, Flat Bars, Forged Billets, Hexagons, Wires and Extruded Profiles. Feel free to contact us for a quote at ss@gneesteel.com

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