Monel K-500/N05500/Alloy K-500, Monel, and Alloy 400 has the same corrosion resistance, but has a higher mechanical strength and hardness.

     This is because the alloy by adding Al, Ti and other elements, after a certain heat treatment, the existence of dispersion in the matrix of intermetallic compounds. Which contains up to 4% silicon and silicon alloys was improved strength, hardness and recrystallization temperature, improve the performance of the alloy casting.
     Monel alloy Ni-Cu system is corrosion resistant alloys, there are two types: Enhanced processing, there Monel400, 404, R405 and other brands; precipitation hardening, a Monel K-500, 502 and other grades, commonly used Monel 400 and K-500 . Monel K-500 mechanical properties superior to Monel 400, but somewhat less corrosion resistance.