Austenitic steel ASME SA213 · TP316LN.UNS S31653

Short Description:

TP316LN (UNS S31653) is a nitrogen-enhanced, low-carbon version of 316 stainless steel. The combination of nitrogen addition and low carbon content improves high-strength performance, weldability, and resistance to intergranular corrosion. TP316LN offers exceptional durability in chloride-containing, marine, chemical, and high-pressure industrial environments.

Tube Grade: TP316LN, AISI 316LN, EN 1.4429, UNS S31653

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

TP316LN Stainless Steel Tubes, 1.4429 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 316LN . UNS S31653 . 1.4429 Chemical Composition

Chemical Composition (in % by mass)

Grade	C (Max.)	Si (Max.)	Mn (Max.)	P (Max.)	S (Max.)	Cr	Ni	Mo	Ti	N	Others
316LN	0.035	1.00	2.00	0.045	0.030	16.0 – 18.0	10.0 – 14.0	2.00 – 3.00		0.10 – 0.16
1.4429	0.030	1.00	2.00	0.045	0.015	16.5 – 18.5	11.0 – 14.0	2.50 – 3.00		0.12 – 0.22