Views: 12 Author: Site Editor Publish Time: 2017-09-25 Origin: Site
Bellows Material Selection Guide Form
General Properties and Manufacturing Availability
Standard material for manufacture of bellows.Usually this grade is used in water or steam applications.For operating temperatures to 450℃
Bellows can be supplied in this material when required,subject to availability of sheet of the required gauge
Improved corrosion resistance as compared to the 321,
especially with regard to pitting corrosion.Typical uses include high sulphur crude oils,brackish waters,flue gases,food
processing and numerous applications in chemical and petro-chemical processing.
Adequate corrosion resistance and mechanical properties at ambient and elevated temperatures,450℃ to 815℃
This grade is sometimes requested for special purposes.
Because of difficulty in obtaining material suitable for bellows manufacture,we usually offer Incoloy 800 as a superior alternative material where necessary.
Bellows can be supplied in this material when its good corrosion resistance and high temperature properties are required to meet service conditions.
Bellows can be manufactured from this material when required.
The alloy combines good general corrosion resistance with virtual immunity to chloride stress corrosion and also has good high temperature strength and oxidation resistance.
One of the more recent nickel-chrome molybdenum alloys combining good high temperature properties with good resistance to chloride stress corrosion and a variety of corrosive environments.
The nickel-copper alloy finds limited use for bellows manufacture in some specialized applications such as chlorine service.However the manufacture of small diameter bellows would be uneconomic,and we advise that an alternative material should be used where the service conditions permit.
Hastelloy C 276
A nickel-chrome molybdenum alloy having outstanding resistance to a wide variety of severely corrosive chemical process environments including:wet chlorine,hypochlorites,
chlorine dioxide solutions,hot contaminated mineral acids and acetic acid,sea water and brine.Bellows can be supplied when required,subject to the availability of sheet material.