Austenitic steel ASME SA213 · TP321

Short Description:

SS 321 is an austenitic stainless steel stabilized with titanium, making it highly resistant to intergranular corrosion even after exposure to high temperatures. Manufactured according to ASTM A213 TP321 and UNS S32100, these tubes are widely used in heat exchangers, chemical processing, oil refineries, aerospace systems, and exhaust manifolds due to their superior thermal stability and excellent mechanical strength.

Tube Grade: TP321, AISI 321, EN 1.4541, UNS S32100

Tube Type: Seamless

Tube Form: Straight, U Bend, Cut-to-Length Pieces

Surface Finish: Solution Annealed & Pickled (AP), Bright Annealed (BA), Polished

Standards (ASME/ASTM): ASME SA213, ASTM A213

Standards (EN): EN 10216-5

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Product Detail

Product Tags

TP321 Stainless Steel Tubes, 1.4541 Stainless Steel Tubes

Item	Specification / Details
Stainless Steel Tube	ASME SA213, ASTM A213
Tube Size	1/8″ OD to 5″ OD (6.35 mm to 127 mm)
Thickness Range	0.5 mm – 15 mm
Type	Seamless
Form	Round, U Bend
Length	Single Random, Double Random & Required Length / U Bend
End	Plain End, Beveled End
End Protection	Plastic Caps
Outside Finish	2B, BA, AP, Polished
Delivery Condition	Solution Annealed and Pickled, Bright Annealed, Cold Drawn
Inspection, Test Reports	Mill Test Certificates, EN 10204 3.1, Eddy Current Test, Hydrostatic Test
Packing	Packed in Wooden Boxes, or as per Customers Requests
Specials	Sizes and Specifications other than above can be manufactured on request

TP 321 . UNS S32100 . 1.4541 Chemical Composition

Chemical Composition (in % by mass)

Grade	C (Max.)	Si (Max.)	Mn (Max.)	P (Max.)	S (Max.)	Cr	Ni	Mo	Ti	N (Max.)	Others
321	0.08	0.75	2.00	0.045	0.030	17.0 – 19.0	9.0 – 12.0		5x(C+N) – 0.70	0.10
1.4541	0.08	1.00	2.00	0.045	0.015	17.0 – 19.0	9.0 – 12.0		5xC – 0.70	-

TP 321 . UNS S32100 . 1.4541 Mechanical Property

Mechanical Property & Heat Treatment

Grade	Rp 0.2 Mpa (Min.)	Rp 1.0 Mpa (Min.)	Rm Mpa (Min. – Max.)	A (%) (Min.)	Hardness (HRB) (Max.)	Heat Treatment
321	205		515	35	90	Solution Annealed
1.4541	190	220	500 – 730	30