Austenitic steel ASME SA213 · TP304LN

Short Description:

The low-carbon nitrogen-strengthened chromium nickel stainless steel TP304LN is mainly used in chemical processing, power plants, and heat exchanger systems. Designed for applications requiring enhanced mechanical strength and excellent resistance to intergranular corrosion, this grade maintains superior toughness even at cryogenic temperatures. Furthermore, this grade is suitable for TIG, MAG and manual arc welding procedures.

Tube Grade: TP304LN, AISI 304LN, EN 1.4311, UNS S30453

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

TP304LN Stainless Steel Tubes, 1.4311 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 (无缝)
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 304LN . UNS S30453 . 1.4311 Chemical Composition

Chemical Composition (in % by mass)

Grade	C (Max.)	Si (Max.)	Mn (Max.)	P (Max.)	S (Max.)	Cr	Ni	Mo	Ti	N	Others
304LN	0.035	1.00	2.00	0.045	0.030	18.0 – 20.0	8.0 – 11.0			0.10 – 0.16
1.4311	0.030	1.00	2.00	0.045	0.015	17.5 – 19.5	8.5 – 11.5			0.12 – 0.22

TP 304LN . UNS S30453 . 1.4311 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
304LN	205		515	35	90	Solution Annealed
1.4311	270	300	550 – 760