Product Specifications


AM Mn-37 is a Copper Manganese based brazing alloy primarily used for joining corrosion and heat resistant alloys where high strength, good ductility, and oxidation resistance above 1000°F (538°C) are required. AM Mn-37 is primarily used to join nickel-based alloys, tungsten carbides, and stainless steels. 


Brazing Characteristics

AM Mn-37 is a free-flowing alloy (within the capillary) and will diffuse into the base metal creating an intermetallic layer. Recommended joint clearance at brazing temperature for AM Mn-37 is 0.001 in. – 0.005 inch. A minimum brazing temperature of 1670°F (910°C) is recommended. 



AM Mn-37 is manufactured in accordance to specifications of Society of Automotive Engineers (SAE) AMS 4764


Forms Available

Foil, Atomized powder, Paste, Sheet, and Preformed shapes; washers, discs, shims, specialty shapes. Two dimensional shapes can be Laser-cut and/or machined with EDM. Preforms must be cleaned prior to brazing. 


Compare With:

  • AMS: 4764 
  • Wesgo: Nicuman 37
  • P&I: HT-37  


  • Brazing Temperature Range High:  1742°F / 950°C
  • Brazing Temperature Range Low:  1670°F / 910°C
  • Liquidus:  1697°F / 925°C
  • Solidus: 1616°F / 880°C


  • Cu: 52.50%
  • Mn: 38.0%
  • Ni: 9.50%