J&J Alloys

J & J Alloys is and industry leading manufacturer of nickel alloy fitting and flanges with a wide array of standard as well as specialty products we are capable of producing.

Alloy 20

Description

Alloy 20 is one of the so-called “Super” stainless steels that was designed for maximum resistance to acid attack. Its nickel, chromium, molybdenum and copper content contribute to its overall resistance to chlorideon stress corrosion cracking and general pitting attack. The alloy is stabilized with columbium to minimize carbide precipitation during welding.

Design Features

  • Superior resistance to stress-corrosion cracking in boiling 20 to 40% sulfuric acid
  • Excellent general corrosion resistance to sulfuric acid
  • Excellent resistance to chloride stress corrosion cracking
  • Excellent mechanical properties and fabricability
  • Minimal carbide precipitation during welding

Typical Applications

  • Chemical and allied industries
  • Food and dye production
  • Heat exchangers
  • S02 scrubbers and other severe environments
  • Tanks
  • Pickling Racks
  • Valves
AVAILABILITY SPECS
150# FITTINGS 1/4" - 2" B366
FORGINGS B462
TENSILE REQUIREMENTS
TENSILE STRENGTH (KSI) 80
YIELD STRENGTH (KSI) 35
ELONGATION 30% MIN.
C NB + TA CR CU FE MN MO NI P S SI
MAX 8X Carbon MAX MAX MAX MAX
0.07 1.0 19.0 - 21.0 3.0 - 4.0 BAL 2.0 2.0 - 3.0 32.0 - 38.0 0.045 0.035 1.0
CHEMICAL COMPOSITION %