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TP309 Stainless Steel Pipes & Tubes


Material Description

UNS S30900

Chemical Composition, %


C

Mn

P

S

Si

Cr

Ni

.20 max

2.0

.045

.03

0.75

22.0-24.0

12.0-15.0


TP309 is an austenitic chromium-nickel stainless steel that provide excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures.


Corrosion Resistance

TP309 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.

TP309 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 A269 / ASME SA269

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