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ASTM A269 TP321 Stainless Steel Seamless Tubes

Grades 321 are the basic Austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) additions

ASTM A269 TP321 Seamless Stainless Tube

ASME SA269 · UNS S32100 · general service tubing


Stainless Steel Tubes

Savoy Piping Inc. supplies ASTM A269 TP321 seamless tubes — Ti-stabilised austenitic for intermittent high temperature and resistance to chromium carbide sensitization.

Grade hub · A312 Seamless · A312 Welded · A213 · A269 · A358 EFW · SS hub · Instrumentation tubes

Also see: Stainless seamless tube hub · SS pipe & tube hub · Instrumentation tubes.

What is A269 TP321?

321 general-service tube. Chemistry: 18Cr-8Ni titanium-stabilised.

Typical applications

  • Instrumentation and hydraulic lines
  • General process tubing
  • Aircraft / exhaust and high-temp process lines
  • Refinery polythionic acid SCC mitigation packages (as specified)

Selection guidance

Specify 321 when stabilisation is required. For welded heavy sections at lower temp, 304L may still be preferred — follow the engineer.

ASTM A269 TP321 Stainless Steel Seamless Tubes range

ASTM A269 TP304 Stainless Steel Tubes Specification ASTM A-249, A-268, A-269, A-270, A-554, A-688, A-778, DIN 1745, DIN 1746, 1747, DIN 1748 [Class 1] & Its equivalent ASME, DIN & EN Standard.
ASTM A269 TP304 Stainless Steel Tubes Grades 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC.
ASTM A269 TP304 Stainless Steel Tubes Type Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish
ASTM A269 TP304 Stainless Steel Tubes Outer Diameter Size Seamless - 6 MM OD TO 114.3 MM OD
Welded / ERW- 10 MM TO 114.3 MM OD
ASTM A269 TP304 Stainless Steel Tubes Wall Thickness 0.8 MM TO 4 MM Wall Thickness
ASTM A269 TP304 Stainless Steel Tubes Length 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size.
ASTM A269 TP304 Stainless Steel Tubes Ends Plain Ends / Beveled Ends
ASTM A269 TP304 Stainless Steel Tubes Delivery Conditions As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw
ASTM A269 TP304 Stainless Steel Tubes Coating Electropolish, Mechanical Polish, Satin Finish, Passivated
ASTM A269 TP304 Stainless Steel Tubes Other Testing Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc
ASTM A269 TP304 Stainless Steel Tubes Dimension All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME
ASTM A269 TP304 Stainless Steel Tubes Value Added Services Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment / Annealed / Bright Annealed
ASTM A269 TP304 Stainless Steel Tubes Packaging Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
ASTM A269 TP304 Stainless Steel Tubes Shipment & Transportation By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes
ASTM A269 TP304 Stainless Steel Tubes Material Test Certificate Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

Chemical Composition of ASTM A269 TP321 Stainless Steel Seamless Tubes

The chemical composition of grade 321 Stainless Steel is outlined in the following tableTypical compositional ranges for grade 321 stainless steels Pipes

Grade C Mn Si P S Cr Mo Ni N Other
321 min.
max		 -
0.08		 2.00 1.00 0.045 0.030 17.0
19.0		 - 9.0
12.0		 0.10 Ti=5(C+N)
0.70
321H min.
max		 0.04
0.10		 2.00 1.00 0.045 0.030 17.0
19.0		 - 9.0
12.0		 - Ti=4(C+N)
0.70

Mechanical Properties of ASTM A269 TP321 Stainless Steel Seamless Tubes

The Mechanical Properties of grade 321 Stainless Steel are displayed in the following table.

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
321 515 205 40 95 217
321H 515 205 40 95 217
321H also has a requirement for a grain size of ASTM No 7 or coarser.

ASTM A269 TP321 Stainless Steel Seamless Tubes Physical Properties

Physical properties of 321 grade stainless steel in the annealed condition

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100°C (J/kg.K) Electrical Resistivity (nΩ.m)
0-100°C 0-315°C 0-538°C at 100°C at 500°C
321 8027 193 16.6 17.2 18.6 16.1 22.2 500 720

grade Specification Comparison for ASTM A269 TP321 Stainless Steel Seamless Tubes

Grade specifications for 321 grade stainless steel

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
321 S32100 321S31 58B, 58C 1.441 X6CrNiTi18-10 2337 SUS 321
321H S32109 321S51 - 1.4878 X10CrNiTi18-10 - SUS 321H
347 S34700 347S31 58G 1.450 X6CrNiNb18-10 2338 SUS 347
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

ASTM A269 TP321 Stainless Steel Seamless Tubes Applications

The grade 321 steel can be made into plates, sheets, and coils to be used in the following:

  • Food preparation equipment particularly in chloride environments.
  • Laboratory benches & equipment.
  • Coastal architectural panelling, railings & trim.
  • Boat fittings.
  • Chemical containers, including for transport.
  • Heat Exchangers.
  • Woven or welded screens for mining, quarrying & water filtration.
  • Threaded fasteners.
  • Springs.

ASTM A269 TP321 Stainless Steel Seamless Tubes Sizes Available in Stock

  • 1/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 5/16" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 3/8" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 3/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 1" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 1-1/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 1-1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 1-3/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 2-1/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 2-1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 2-3/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 3" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 3-1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 4-1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
  • 5" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge

Frequently asked questions — ASTM A269 TP321 Seamless Tube

What is ASTM A269 TP321?

A269 covers seamless and welded austenitic stainless tube for general corrosion-resisting and low/high-temperature service. This page focuses on TP321 / 321.

A269 vs A213?

Use A213 when the datasheet requires boiler/HX tube rules; A269 for general service / instrumentation packages.

Seamless or welded tube?

Both exist under A269. This page is the seamless tube route — confirm welded if the PO allows.

321 in brief?

Ti-stabilised austenitic for intermittent high temperature and resistance to chromium carbide sensitization

Supplying ASTM A269 TP321 Stainless Steel Seamless Tubes to Countries -

We export ASTM A269 TP321 Stainless Steel Seamless Tubes to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc

Savoy Piping Inc. is a well known worldwide Exporter of ASTM A269 TP321 Stainless Steel Seamless Tubes, Savoy Piping Inc. is committed to provide each and every customer with the highest standard of customer service. We deal in ASTM A269 TP321 Stainless Steel Seamless Tube in India and Overseas, offering a wide range of ASTM A269 TP321 Stainless Steel Seamless Tubes.