Inconel 600

For any temperature and concentration of hydrochloric acid has excellent corrosion resistance. At the same time, it has good corrosion resistance to sulfuric acid, acetic acid, formic acid, phosphoric acid and other non-oxidizing media.

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Key words: nickel-based alloy material

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DESCRIPTION

- Commodity name: Inconel 600
- 副标题: Valve Body Blank
Overview

Nickel-chromium alloy, with good resistance to high temperature oxidation. Resistant to chloride ion stress corrosion cracking, high-purity water corrosion cracking, high-purity water corrosion and alkali corrosion. Used for heating furnace components, chemical and food industries, nuclear engineering and ignition electrodes

Chemical composition

Nickel Ni (minimum value 72)
Chromium Cr (minimum value 14) (maximum value 17)
Iron Fe (minimum value 6.0) (maximum value 10.0)
Carbon C (maximum value 0.15)
Manganese Mn (maximum value 1.0)
Silicon Si (maximum value 0.5)
Copper Cu (maximum value 0.05)
Aluminum Al (maximum value 0.3)
Titanium Ti (maximum value 0.3)
Boron B (maximum value 0.006)
Phosphorus P (maximum value 0.015)
Sulfur S (maximum value 0.015)

Metallographic structure

600 is a face-centered cubic lattice structure, a stable austenite solid solution alloy. Features

It has good resistance to corrosion in reducing, oxidizing and nitriding media; it has good resistance to stress corrosion cracking at room temperature and high temperature; it has good resistance to dry chlorine and hydrogen chloride gas corrosion;

Corrosion resistance

The chemical composition of Inconel600 alloy enables it to resist corrosion in a variety of environments. A certain amount of chromium in the alloy makes its corrosion resistance better than that of industrial pure nickel in an oxidizing environment, while the higher nickel content makes it maintain considerable corrosion resistance in a reducing environment. The nickel content in the alloy also makes it have excellent corrosion resistance to alkaline solutions.
The alloy has equal corrosion resistance to strong oxidizing acid solutions. However, the oxidation of dissolved air alone is not enough to ensure complete passivity and avoid corrosion by inorganic acids and organic acids of certain concentrations in saturated air

Applications

1. Pressurized water reactor steam generator tubes;

2. Sodium hydroxide heat exchangers;

3. Parts used in the manufacture of photographic equipment and film processing;

4 Internal components of chlorine oxide generators for the production of vinyl chloride;

5. Strips for flight recorders

A nickel-chromium-molybdenum alloy with the addition of niobium, which acts with molybdenum to harden the alloy matrix, thereby exhibiting high strength properties without heat treatment. The alloy is resistant to various harsh corrosive environments, especially pitting and crevice corrosion. It is used in chemical, aviation and marine engineering, pollution control equipment, and nuclear reactors.

The low carbon alloy 625 after softening annealing is widely used in the chemical process industry, and its good corrosion resistance and high strength make it can be used as a thin structural component. 625 alloys can be applied in contact with seawater and subjected to high mechanical stress. Typical application areas:
1. Components of organic chemical processes containing chlorides, especially where acid chloride catalysts are used;
2. For the manufacture of digesters and bleaching ponds for the pulp and paper industry;

3. The absorption tower, reheater, flue gas inlet baffle, fan (wet), agitator, deflector and flue in the flue gas desulfurization system;

4. For the manufacture of equipment and components used in acid gas environments;
5. Acetic acid and acetic anhydride reaction generator;
6. Sulfuric acid condenser.