Duplex Steel Seamless Pipes A789 UNS S32205 S331803 S332750 Super Duplex Steel Pipe Heater Air Cooler Condenser Tank

Duplex Steel Seamless Pipes A789 UNS S32205 S331803 S332750 Super Duplex Steel Pipe Heater Air Cooler Condenser Tank

Specifications

Duplex S32205 Pipes are modern super duplex stainless steel pipes that improve mechanical and corrosion resistance properties. These pipes can withstand extreme temperatures and chemical attacks better than traditional materials, making them a top choice for challenging applications. This blog will explore various aspects of Duplex S32205 tubes, including their composition, physical and mechanical properties, uses, and heat treatment.

Duplex Applications

Chemical processing, transport and storage,
Oil and Gas exploration and processing equipment,
Marine and other high chloride environments,
Pulp and paper digesters, liquor tanks and paper machines.

Duplex Corrosion Resistance

Excellent general corrosion resistance; superior to Grade 316 in most environments. Excellent resistance to localized corrosion including intergranular, pitting and crevice corrosion; the CPT of 2205 is generally at least 35ºC. The grade is also resistant to chloride stress corrosion cracking (SCC) at temperatures of up to about 150ºC. Grade 2205 will often perform well in environments which cause premature failure of austenitic grades. It has better resistance to sea water then Grade 316.

Duplex Heat Resistance

Although 2205 has good high temperature oxidation resistance, this grade - like other duplex stainless steels - suffers from embrittlement if held for even short times at temperatures above 300ºC. If embrittled, this can only be rectified by a full solution annealing treatment. Duplex stainless steels are almost never used above 300ºC.

Duplex Heat Treatment

Classification Society Criterion:CSS,DNV,GL,LR,NK,KR,ABS,BV

Solution treatment (annealing) - heat to 1020ºC-1100ºC and cool rapidly. This grade cannot be hardened by thermal treatment, but does work harden.

Applications Industry

Pharmaceutical Equipment

Power Generation

Petrochemicals

Pressure Vessel

Heat Exchangers / Condensers / Boiler

Oil and Gas Processing

Specialty Chemicals

General Engineering

Pulp and Paper Industry