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309S Stainless Steel Pipe & Tube

Stainless steel 309S is available in seamless and welded forms. We can provide 309S stainless steel welded pipe and tube up-to 120″ diameter with reduced lead times.

 

General Properties

Alloys 309 is an austenitic chromium-nickel stainless steels that is used for higher temperature applications. 309 has increased chromium and nickel, increasing its corrosion advantages compared to 304 stainless steel.

Specifications: UNS S30900/S30908

Applications:

Alloys 309 are used for their high temperature oxidation resistance

  • Power Generation
  • Petrochemical
  • Heat exchangers

Standards:

  • ASTM/ASME: UNS S30900/S30908
  • EURONORM: FeMi35Cr20Cu4Mo2
  • DIN: 2.4660

309S Stainless Chemical Properties:

C Mn Si P S Cr Ni Fe
309S max: 0.08 2.0 max 0.75 max 0.045 max 0.03 max min: 22.0 max: 24.0 min: 12.0 max: 16.0 Balance

309 Stainless Mechanical Properties:

Grade Tensile Strength ksi (min) Yield Strength 0.2% ksi (min) Elongation % Hardness (max)
309S 75 30 40 95 HRB

309S Stainless Physical Properties:

Density
lbm/in3
Thermal Conductivity
(BTU/h ft. °F)
Electrical
Resistivity
(in x 10-6)
Modulus of
Elasticity
(psi x 106
Coefficient of
Thermal Expansion
(in/in)/
°F x 10-6
Specific Heat
(BTU/lb/
°F)
Melting
Range
(°F)
at 68°F: 0.285 9.0 at 32- 212°F 30.7 at 68°F 28.5 8.28 at 32 – 212°F 0.1200 at 68°F to 212°F 2500-2590

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