309 Stainless Steel and 309S Stainless Steel

Description:

Types 309 Stainless Steel and 309S are austenitic chromium-nickel stainless steels that provide excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures. Type 309S Stainless Steel is identical to Type 309 except for a lower carbon content that minimizes carbide precipitation and improves weldability. They are essentially nonmagnetic as annealed and become lightly magnetic when cold worked.

Typical Applications:
furnace parts, heating elements, aircraft and jet engine parts, heat exchangers, sulfite liquor handling equipment, kiln liners, boiler baffles, refinery and chemical processing equipment, and auto exhaust parts
 Rocessing:
These alloys are not hardenable by heat treatment. Anneal at 1900 - 2050°F (1038 - 1121°C), then water quench or rapidly air cool.
Forming:
Types 309 and 309S Stainless Steels can be roll formed, stamped and drawn readily. In-process annealing is usually required to reduce hardness and increase ductility.
Welding:
Type 309 is generally considered to have weldability nearly equivalent to the most common alloys of this class, Types 304 and 304L. When a weld filler is needed, AWS E/ER 309 and 310 are most often specified.
Corrosion:
Types 309 and 309S provide excellent general corrosion resistance. They are more resistant to marine atmospheres than Type 304. They exhibit high resistance to sulfite liquors and are useful for handling nitric acid, nitric-sulfuric acid mixtures, and acetic, citric, and lactic acids.


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Company Profile
 
Tianjin peng bo tongda international trade limited company is approved by tianjin government to carry out import and export trading company.Is located in the beautiful coast of the bohai sea, 70 kilometers away from tianjin port.Relying on the northern iron and steel production areas, with the domestic first-class enterprise cooperation, distribution and high quality steel products for export.Operating varieties include all kinds of steel pipe, plate, wire rod, pipe fittings and other series products.
The company insists on high quality, efficient, service customers, quality consciousness and service consciousness to carry out to each link,With high quality, competitive price, timely delivery to win the recognition and trust of many customers.
The company has a group of proficient in foreign trade, foreign language, management, storage and transportation, such as talents, Under the joint efforts of all staff, established a stable cooperation relationship with a large number of customers, products are exported to Europe, central and South America, Africa, the Middle East and other places,Trade partners all over the world more than 30 countries and regions, annual trade volume more than tens of millions of dollars



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