Hastelloy B3 vs C276 – What's the Difference?
Hastelloy B3 performs well in reducing environments, especially in acidic environments such as hydrochloric acid, while Hastelloy C276 is more versatile, with strong resistance to both reducing and oxidizing corrosives, including chlorides and other harsh chemicals.
What is Hastelloy B3?
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.
What is the difference between Hastelloy B3 and B2?
Both alloys are corrosion resistant, but Hastelloy B3 is more resistant to a variety of chemicals, such as hydrochloric acid, sulfuric acid, and phosphoric acid. In contrast, Hastelloy B2 is well suited for use in reducing environments, such as hydrogen chloride gas, hydrofluoric acid, and acetic acid.
What is the difference between Hastelloy C276 and Monel 400?
While Monel 400 alloy relies primarily on the addition of copper to its composition, Hastelloy C276 alloy has additions of molybdenum, chromium, and tungsten, which provide greater solid solution strengthening, resulting in higher tensile strength.
Hastelloy B3 vs C276 – Mechanical Properties
Both Hastelloy B3 and C276 have excellent mechanical properties and are suitable for use in high stress environments. However, Hastelloy C276 tends to have slightly higher tensile strength and yield strength than Hastelloy B3. This difference in mechanical properties can be attributed to the difference in their chemical compositions. The higher molybdenum and tungsten content in Hastelloy C276 gives it superior strength. Despite this, Hastelloy B3 still maintains sufficient strength for many applications and is generally a more cost-effective choice.
Hastelloy B3 vs C276 – Corrosion Resistance
When it comes to corrosion resistance, both Hastelloy B3 and C276 excel. However, they excel in different corrosive environments. Hastelloy B3 is particularly resistant to reducing acids and is often used in applications involving sulfuric and hydrochloric acids. Its cobalt content also enhances its resistance to certain localized corrosion, such as pitting and crevice corrosion. On the other hand, the higher molybdenum and tungsten content of Hastelloy C276 makes it excellent in resistance to oxidizing acids, especially nitric acid. This alloy is often the first choice for applications involving oxidizing media or mixed acid environments.
About Gnee Steel
Gnee Steel is a supplier of Hastelloy B3 And C276, 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 C276, pipes, tubes, plates, strips, sheets, round bars, flat bars, forged billets, hexagons, wires and extruded profiles. Feel free to contact us for a quote at ss@gneesteel.com
