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690

The alloy is closely related to Inconel 600. The electrode is not hardenable through heat treatment. It is mostly used in the annealed state. The material is highly resistant to chemical and heat oxidation. The filler metal also withstands stress cracking corrosion in both chloride and sodium hydroxide bearing environments. The alloy can also withstand organic acid compounds like polythionic. The electrode has reliable strength in sulfurizing and oxidizing environments in temperatures of up to 10000 C. The filler wire has excellent weldability and exhibits stability in properties. The electrode is used in joining similar grades of steel and leaves a smooth bead. The slag is easily removable.

 

Properties of Inconel 690 electrodes

 

Mechanical- The tensile strength of this electrode is 580MPa while the tensile strength is 260MPa. It has an elongation capacity of 30% in 50mm.

 

Chemical- The components of this filler metal include carbon, nickel, chromium, molybdenum, sulfur, phosphorus, iron, manganese, copper and silicon. Aluminum is also present to increase the weldability of the material.

 

Application

  • Cold gasification units.
  • Nuclear plants.
  • Sulfuric acid manufacturing plants.
  • Incinerators.
  • Petrochemical processing.

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