ASTM A312 TP304 Seamless Stainless Steel Tubing Wall Thickness 9.53-140 Mm

Product Details:
Place of Origin: China
Brand Name: VANFORGE
Certification: ISO9001, ISO10012, ISO14001, OHSAS18001, ABS, BV, DNV, Lloyd, NK, PED
Payment & Shipping Terms:
Minimum Order Quantity: 10 metric tons
Price: Negotiable
Packaging Details: Seaworthy package for export
Delivery Time: 60 days
Payment Terms: L/C, T/T
Supply Ability: 1000 metric tons per month

Detail Information

Material: Austenitic Stainless Steel Process: Hot Rolled
Type: Seamless Surface: Pickled
Shape: Round Length: Cut To Length On Request
Treatment: Solution
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Product Description

ASTM A312 TP304 Seamless stainless steel pipe for high temperature service


ASTM A312, TP304 Stainless Steel Pipe


Material Description
UNS S30400

EN Number 1.4301

Chemical Composition, %

C Mn P S Si Cr Ni
0.08 2.0 0.045 0.03 1.0 18.0-20.0 8.0-11.0


TP304 is Austenitic Cr-Ni stainless steel. Better corrosion resistance than TP302. High ductility, excellent drawing, forming, and spinning properties. Essentially non-magnetic, becomes slightly magnetic when cold worked. Low carbon content means less carbide precipitation in the heat-affected zone during welding and a lower susceptibility to intergranular corrosion.


Corrosion Resistance

  • Organic acids at moderate temperatures
  • Salt solutions, e.g. sulphates, sulphides and sulphites.
  • Caustic solutions at moderate temperatures


The risk of general corrosion in sulphuric acid during shut down periods has to be taken into account. Since TP304 is not alloyed with molybdenum, the grade can only tolerate low concentrations at limited temperatures. In naturally aerated sulphuric acid the corrosion rate is below 0.1 mm/year provided the temperature is not higher than 20°C (68oF) in 5% solution.


TP304 has a relatively high carbon content. Thus, there is a certain risk of reduced intergranular corrosion resistance if the steel has become sensitised after e.g. improper heat treatment or welding.


The steel may be sensitive to pitting and crevice corrosion even in solutions of relatively low chloride content. Molybdenum alloyed steels have better resistance and the resistance improves with increasing molybdenum content.


Austenitic steel is susceptible to stress corrosion cracking. This may occur at temperatures above about 60°C (140°F) if the steel is subjected to tensile stresses and at the same time comes into contact with certain solutions, particularly those containing chlorides. Such service conditions should therefore be avoided. Conditions when plants are shut down must also be considered, as the condensates which are then formed can develop conditions that lead to both stress corrosion cracking and pitting.



Heat exchanger tubing, condenser tubing, pipelines, cooling and heating coils in the chemical, petrochemical, fertiliser, pulp and paper and nuclear power industries, as well as in the production of pharmaceuticals, foods and beverages.


Seamless Pipes & Tubes Information

Specification: ASTM A312 / ASME SA312, EN10216-5, DIN17458

Outside Diameter: 325-1067 mm

Wall Thickness: 9.53-140 mm

Length: On the request



Production procedure

ASTM A312 TP304 Seamless Stainless Steel Tubing Wall Thickness 9.53-140 Mm 0

ASTM A312 TP304 Seamless Stainless Steel Tubing Wall Thickness 9.53-140 Mm 1

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