Distinguish between Inconel 625 & Incoloy 825 Round Bars

What is Inconel 625 Round Bar?

Inconel 625 high temperature alloy is based on nickel and contains more nickel than other Inconel grades. Inconel 625 Round Bar is extremely strong and resistant to high temperatures. In addition, it has excellent oxidation and corrosion resistance. These unique properties are very beneficial in nuclear and marine applications.

This high temperature alloy has a service temperature range from cryogenic to 982°C. The strengthening effect of molybdenum and niobium in the nickel-chromium matrix gives the alloy high strength. Therefore, precipitation hardening is not required. The chemical composition of Inconel 625 Round Bar makes it ideal for seawater applications due to its strong corrosion fatigue strength, high tensile strength, and resistance to chloride ion stress corrosion cracking.

In addition, Inconel 625 Round Bar exhibits excellent toughness and ductility at cryogenic temperatures. According to its microstructure, the alloy is a face-centered cubic, matrix-strengthened solid solution alloy. In addition, Inconel 625 Round Bar is rich in carbides such as nickel, chromium, and molybdenum.

What is Incoloy 825 Round Bar?

The chemical elements of Incoloy 825 alloy include titanium, copper, molybdenum, nickel, chromium, and iron. Incoloy 825 Round Bar is popular due to its excellent corrosion resistance in a wide range of chemically corrosive environments. Incoloy 825 Round Bar is primarily recognized for its excellent resistance to intergranular corrosion, stress corrosion cracking, pitting, and crevice corrosion. The presence of chromium in the material enhances the resistance of Inconel 825 Round Bar to various oxidizing salts, nitrates, and nitric acid. Proper heat treatment of titanium-based Incoloy 825 Round Bar helps to improve its resistance to intergranular corrosion sensitization.

Uns N08825 bright bar is known for its ability to resist localized and general corrosion in various situations. Incoloy 825 Round Bar is a popular choice in a variety of industries, including acid production, pollution control, and nuclear fuel, due to its excellent mechanical properties. 825 Incoloy Round Bar is also used in the manufacture of radioactive waste treatment machinery.

Differences between Inconel 625 and Incoloy 825 Round Bar
Incoloy 825 (UNS N08825/W.Nr. 2.4858) is an alloy consisting of nickel, iron, chromium and molybdenum, copper and titanium. Inconel 625 (UNS code N06625) is a nickel-based high-temperature alloy that has high temperature and high energy resistance. In addition, it has excellent oxidation and corrosion resistance.

Incoloy 825 Round Bar is a nickel, iron and chromium alloy that also contains molybdenum, copper and titanium. The chemical composition of this nickel-steel alloy makes it excellent in resistance to a variety of corrosive conditions. It is the same as 800 alloy, but has better resistance to aqueous corrosion. Inconel 625 Round Bar has excellent resistance to stress corrosion cracking and chloride ion fatigue. Heat shields, furnace hardware, gas turbine engine ducting, combustor liners and booms, chemical plant hardware, and special seawater applications are common applications for Inconel 625 round bar. First, the cost of Inconel is significantly higher than that of chrome steel alloys.