Duplex stainless steel 2205 has those properties and applications

Duplex stainless steel 2205 has those properties and applications

Duplex stainless steel 2205 is a compound stainless steel composed of iron, chromium, nickel, molybdenum, manganese, nitrogen and other elements, also known as 22Cr-5Ni-3Mo-0.15N stainless steel. With high strength, high corrosion resistance and excellent weldability, it is an alloy that combines the ideal properties of austenitic and ferritic steel grades.

Product type

Duplex stainless steel 2205 can be made into different types of products, such as steel plates, profiles, pipes and so on. According to ASTM A240/A240M-01, the product specifications of duplex stainless steel 2205 are as follows:

Steel plate: thickness 0.5mm-40.0mm, width 1000mm,1219mm, cold-rolled 2000mm or 2438mm
Profile: round bar, square bar, hexagonal bar, flat bar, Angle steel, etc
Pipe: seamless pipe, welded pipe, bellows, etc
Price range

The price of duplex stainless steel 2205 is affected by market supply and demand, raw material costs, processing costs and other factors, so there will be certain fluctuations. According to some data queried on the Internet, the price range of duplex stainless steel 2205 is roughly as follows:

Steel plate: about 25,000-30,000 yuan per ton
Profile: about 26,000-32,000 yuan per ton
Pipe: about 27,000-33,000 yuan per ton
Type classification

The type classification of duplex stainless steel 2205 is mainly based on its chemical composition and performance. According to international standards, duplex stainless steel 2205 models are as follows:

UNS S32205: US standard with higher nitrogen content and better corrosion resistance
UNS S31803: US standard, lower nitrogen content, better strength and toughness
EN 1.4462: European standard, identical to UNS S32205
NAS 329J3L: Japanese standard, basically the same as UNS S32205
Scope of application

Duplex stainless steel 2205 has a very wide range of applications, mainly for a variety of industrial components and equipment in high strength and high corrosion resistance environments. According to its characteristics and applications, the scope of application of duplex stainless steel 2205 can be divided into the following categories:

Chemical industry: pressure vessels, high-pressure storage tanks, high-pressure pipelines, heat exchangers, etc
Oil and gas industry: pipeline, heat exchanger pipe fittings, pumps, valves, containers, wellhead equipment, subsea equipment, etc
Sewage treatment system: pulp and paper industry classifiers, bleaching equipment, storage and treatment systems, etc
Marine industry and shipbuilding: propellers, shafts, rudders, shaft seals, pumps, bolts, fasteners, valves, instruments, etc
Food industry: brewery pipes, evaporators, hot wine tanks, presses, etc
use

The use of duplex stainless steel 2205 mainly depends on its high strength and high corrosion resistance, as well as its advantages compared to austenitic stainless steel. According to its use, the use of duplex stainless steel 2205 can be summarized as follows:

Material cost savings: Because the yield strength of duplex stainless steel 2205 is twice that of austenitic stainless steel, the weight can be reduced when designing products and the amount of material can be reduced, thereby saving material costs.
Prolong the service life: Because the corrosion resistance of duplex stainless steel 2205 is better than that of austenitic stainless steel, it can effectively prevent pitting, crevice corrosion, stress corrosion and other phenomena in the environment containing chloride and hydrogen sulfide, thereby extending the service life.
Improve work efficiency: Because the thermal expansion coefficient of duplex stainless steel 2205 is lower than that of austenitic stainless steel, in the case of temperature changes, the generation of thermal stress can be reduced to avoid deformation and cracks, thereby improving work efficiency.
Ensure safety: Because the thermal conductivity of duplex stainless steel 2205 is higher than that of austenitic stainless steel, the temperature difference and temperature gradient can be reduced during the heat transfer process, and the occurrence of thermal shock and thermal cracks can be avoided, so as to ensure safety.