ASTM A312 TP321H STAINLESS STEEL PIPE

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of astm a312 tp321h stainless steel pipe in China. With abundant experience, we warmly welcome you to wholesale customized astm a312 tp321h stainless steel pipe from our factory. For price consultation, contact us.

ASTM A312 Tp321h is a high carbon version of the titanium stabilized austenitic stainless steel. It has 18% chromium and 8% nickel in the common composition and therefore is called as the 18/8 steel as well. Oshwin Overseas is a manufacturer and supplier of the ASTM A312 Gr.Tp321h pipe types in all kinds, scales and dimensions. There are different production methods such as electric fusion welding, electric resistant welding, cold drawing or hot rolling of the ASTM A312 Tp 321h pipes. The titanium addition in the SA312 Tp321h material composition makes it stronger and more corrosion resistant. It also provides the material last longing life under even corrosive environments. The higher carbon content makes it tougher, but it can compromise the strength compared to the low carbon versions. Due to the increased toughness, it can perform well under cryogenic temperatures as well.

Our A312 Tp 321h products are of superior quality and are tested to the international standards. Our products are used in laboratory equipment, architectural applications in marine environments, food processing industry, and in some chemical processing industries as well. The 321h Stainless Steel Pipe is seamless and has less absolute roughness. The SS 321h Erw Pipe of this type are used for extra strength and ease of welding. However, the SS 321h Welded Pipe has higher carbide precipitation rate than the low carbon material. Regardless of this fact, it is used in applications because of the toughness. You can contact us for further product details and pricing.
Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.
Grade 321H is a modification of 321 with a higher carbon content, to provide improved high temperature strength.
A limitation with 321 is that titanium does not transfer well across a high temperature arc, so is not recommended as a welding consumable. In this case grade 347 is preferred - the niobium performs the same carbide stabilisation task but can be transferred across a welding arc. Grade 347 is therefore the standard consumable for welding 321. 

Chemical Composition of ASTM A312 TP321H Stainless Steel Seamless Pipes

Mechanical Properties of ASTM A312 TP321H Stainless Steel Seamless Pipes

The Mechanical Properties of grade 321H Stainless Steel are displayed in the following table.

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