Monel K500

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: Monel K500
- 副标题: 3 Tons Of Lathe Forging
Overview

Precipitation hardenable nickel-copper alloy, with the corrosion resistance of Monel400 alloy and better strength and hardness than it. It has low magnetic permeability and is non-magnetic at -101℃. It is used for pump shafts, oil well tools and instruments, scraper blades, springs, valve cores, fasteners and marine propeller shafts.

Chemical composition

Nickel: 63
Copper: 27.0-33.0
Aluminum: 2.3 -3.15
Titanium: 0.35 -0.85
Iron: 2.0
Manganese: 1.5
Sulfur: 0.01
Carbon: 0.25
Silicon: 0.5

Metallographic structure

Monel K500 also has a face-centered cubic structure. Due to the addition of Al and Ti to the Monel 400 composition, a submicroscopic y'precipitate phase (Ni3Al) can be generated on the matrix in the aging state.

Features

Monel k500 has corrosion resistance in a variety of media, resistance to chloride ion stress corrosion cracking, high strength and hardness. In the aged state, the mechanical properties are about 2 to 3 times stronger than Monel 400. It still has high tensile strength at up to 650℃, good fatigue corrosion resistance, low magnetic permeability, and is still non-magnetic at low temperatures up to -135℃

Corrosion resistance

Generally, the corrosion resistance of Monel K500 is similar to that of Monel 400. The best corrosion resistance is that it can resist corrosion from a variety of media, from pure water to inorganic acids, salts and alkalis. Monel K500 is actually resistant to chloride ion stress corrosion cracking. In the aged state, the alloy is most susceptible to stress corrosion cracking in hydrofluoric acid vapor when the stress is close to the yield strength. Monel K500 exhibits good corrosion resistance in high-speed flowing seawater and marine atmosphere, but pitting corrosion will occur in slowly moving or stationary seawater. Monel K500 also exhibits good corrosion resistance in sour gas.

Application

1. Valve seals, pump sleeves, wear-resistant rings and propeller shafts in marine environments (high strength and seawater corrosion resistance);

2. Medical blades and scrapers;

3. Fasteners such as bolts, used in marine atmospheres and tidal water, resistant to chloride ion environment corrosion;

4. Cable metal shell---high strength, non-magnetic and seawater corrosion resistance;

5. Oil well drilling equipment such as non-magnetic drill bits, valve bodies and instrument sleeves-resistant to chloride ion media and sour gas environment corrosion;

6. Springs-resistant to a variety of corrosive media;

7. Non-magnetic aviation instrument components.

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.