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TP309S Stainless Steel Pipes & Tubes


Material Description
UNS S30908

Chemical Composition, %


C

Mn

P

S

Si

Cr

Ni

.08 max

2.0

.045

.03

0.75

22.0-24.0

12.0-15.0


TP309S is an austenitic chromium-nickel stainless steel with a low carbon content that provide excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures.


Corrosion Resistance

TP309S provides excellent general corrosion resistance. It is more resistant to marine atmospheres than TP304. It exhibits high resistance to sulfite liquors and is useful for handling nitric acid, nitric-sulfuric acid mixtures, and acetic, citric, and lactic acids.

TP309S is generally considered heat-resisting alloys. Their destructive scaling temperature is about 2000°F (1093°C).
It exhibits good scaling resistance in both continuous and intermittent service, but the alloy should not be used above 1800°F (982°C) for intermittent service.


Application

Heat exchanger tubing, condenser tubing, pipelines, cooling and heating coils in the refinery, chemical processing, petrochemical industries


Seamless Tube Information

Specification: ASTM A-213 / ASME SA-213, ASTM A312 / ASME SA312

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