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TP304L Stainless Steel Pipes & Tubes

Material Description

UNS S30403

EN Number 1.4306, 1.4307

Chemical Composition, %















TP304L is an austenitic stainless chromium-nickel steel with a low carbon content.

Corrosion Resistance

Organic acids at moderate temperatures

Salt solutions, e.g. sulphates, sulphides and sulphites

Caustic solutions at moderate temperatures

TP304L has better resistance than normal type ASTM TP304 to oxidizing agents, such as nitric acid.

TP304L has a low carbon content and therefore better resistance to intergranular corrosion than steels of type ASTM TP304.

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

Austenitic steels are susceptible to stress corrosion cracking (SCC). 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 leads to both stress corrosion cracking (SCC) and pitting.


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

Seamless Tube Information

Specification: ASTM A-213 / ASME SA-213, ASTM A-269 / ASME SA-269, ASTM A312 / ASME SA312, EN10216-5, DIN17458

Outside Diameter: 6.0-406 mm (1/4’’ – 16’’)

Wall Thickness: 0.5-35 mm (0.0196’’ – 1.378’’)

Length: Max.33000 mm (the maximum length is for the scope of special diameters and walls)

Other sizes are on the request