ASME SA 249 TP 321 Welded Stainless Steel Tubing

ASTM A249 321 ERW Tube manufacturer and exporter

Grade Sa-249 Tp321 is one of those stainless steel alloys which are designed to be used for elevated temperature applications. Specifically speaking this grade of ASTM specified SA 249 Tp 321 are usually used in piping systems involved in the superheater, boiler, heat exchanger, or condensers. The Stainless Steel 321 Erw is a titanium alloyed grade. Titanium is usually added in carbon steel grades that have a higher content of carbon such as the ASME SA 249 Tp321, for carbide stabilization.

ASTM A249 321 Stainless Steel Welded Heat-Exchanger Tubing at lowest price in India

The titanium present in the alloy of ASTM A249 Tp 321 pipes in combination with the carbon content in the metal forms titanium carbide. Being a stable component, titanium carbide is hard to dissolve in steel. This, in turn, aids in the minimization of the occurrence of inter-granular corrosion. Which is why the A249 321 Stainless Steel Welded Tubing inherits its superior welding properties. Thereby proving to be an indispensable alloy grade, especially in those applications which have welding as their primary requirement. The ASTM A249 321 Erw Tubing produced under this specification have to fulfil requirements of not only the chemistry but also mechanical and testing parameters. Hence, the A249 Tp 321 Welded Pipe has a determined grain size while undergoing tests such as reverse-bend test, tension test, flattening test, flange test, hardness test, in addition to a hydrostatic test or if required a nondestructive electric test.

Stainless Steel 321 SA 249 Tubing Specification

Outside diameter 1/8"-5"
Thickness 0.4 - 6 mm
Standard Specification SA 249 321 SS Welded Superheater, Condenser, Hydraulic, Boiler and Heat-Exchanger Tubes
Forms Round, Coiled, Straight, "U" Tube, Honed Tubes, Pan Cake Coils
Manufacturing Type ERW / Welded / CDW / CDS / DOM / Fabricated / CEW / 100% X Ray Welded
Delivery Condition Annealed and Pickled (AP), Polished, Bright Annealed (BA), Cold Drawn, MF
Surface Finish BA, 2B, No.4, No.1, No.3, No.8, 8K, HL, 2D, 1D, Mirror Polished, 180G, 320G, 400G Satin/ Hairline, 400G, 500G, 600G or 800G Mirror finish JIS SA 249 TP 321 Tubing or Custom Finish as per customer's specification
Temperature range 950-1120°C
Value Added Services
  • Cutting
  • Beveling
  • Threading
  • Polishing (Electro & Commercial)
  • Draw & Expansion as per required Size & Length
  • Destructive and Non Destructive
  • Ultrasonic Testing
  • Annealed & Pickled Bending
Processing Service Bending, Welding, Decoiling, Punching, Cutting, Moulding
Technique ASTM A249 321 SS Cold drawn, Cold rolled, Hot rolled, Extrusion Tube
Test Certificate
  • 100% Radiography Test Report
  • DFARS compliant
  • EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
  • Heat Treatment Charts
  • Raw Materials Certificate
  • Third Party Reports
  • Fumigation Certificates
  • Manufacturer Test Certificate
  • HS Code Invoice
  • Moisture test done
  • Form A for Generalized System of Preferences (GSP)
  • Laboratory Test Certificate from Govt. Approved Lab
  • Surface roughness measurement
SS UNS S32100 SA 249 Tubing Packaging Packed in PE Fabric Bundles or ply wooden box wrapped in plastic or Standard seaworthy export packing or as per customers' request
Port Mumbai, India
Uses & Application
  • Common industrial services (Petroleum, chemical, paper, fertilizer, fabric, aviation and nuclear)
  • Fluid, gas and oil industry
  • Heat transmission and pressure service
  • Construction and ornamental
  • Boilers and Heat exchangers
  • Decoration purpose, boiler, auto parts, medical device, food industry, building materials)

ASTM A249 321 SS Tubing Mechanical Properties

SA 249 TP
Tensile Stress (Mpa)
Yield Stress (Mpa) Elongation(%) Hardness(HRB)
321 520 205 40 90

SS UNS S32100 SA 249 Tube Chemical Composition

SA 249 C Si Mn P S Cr Ni Ti N
TP321 0.08 1.00 2.00 0.045 0.030 17.0/19.0 9.0/12.0 5 X C Min – 0.70 Max 0.10

ASTM A249 SS 321 Equivalent

321 32100 1.4541 X6CrNiTi18-10 SUS321 0Cr18Ni10Ti