Alloy 625

Description

Alloy 625, a nickel-chromium alloy, is popular for its exceptional corrosion resistance, improved fabricability and high strength from cryogenic temperatures to 1800° F (982° C). Precipitation hardening is not required, as the strength of Alloy 625 is derived from the stiffening effect of columbium and molybdenum on its nickel-chromium matrix. Alloy 625 also offers exceptional resistance to oxidation, carburization and a wide spectrum of severe and corrosive environments.

Design features

  • Exceptional resistance to crevice corrosion, pitting, impingement corrosion and intergranular attack
  • Virtual immunity from chloride-induced stress corrosion cracking
  • Exceptional resistance to mineral acids – including nitric, phosphoric, sulfuric and hydrochloric acids – as well as alkalis and organic acids
  • Heightened mechanical properties

Applications

  • Structures in seawater applications and prone to high mechanical stress
  • Chimney linings
  • Components for flue gas scrubbers
  • Equipment used in the production of superphosphoric acid
  • Sour gas production tubes
  • Marine equipment
  • The offshore industry
  • Aerospace industry
Product Type Size Range Wall/Pressure Class
Seamless Tubing 1/4” through 1” .035, .049, .065, .083, .095, .109

Alloy 625 Chemical Composition %

C Cr Fe Ni Al Ti Cb + TA
MAX   MAX MIN MAX MAX  
0.10 20.0-23.0 5.0 58.0 0.40 0.40 3.15-4.15

For more information about our products, please contact a representative!

Request a Quote

Questions?

Ask us about our products.

* Required fields.