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Stainless Steel Grade 316LN (UNS S31653) coiled tubing

Introduction

Stainless steel grade 316LN is an austenitic type of steel that is a low carbon, nitrogen-enhanced version of grade 316 steel. The nitrogen content in this steel provides solid solution hardening, and raises its minimum specified yield strength. It also possesses good resistance to general corrosion and pitting/crevice corrosion.

Stainless Steel Grade 316LN (UNS S31653) coiled tubing

The following datasheet provides an overview of stainless steel grade 316LN.

Stainless steel grade 316LN is a high-quality material that boasts exceptional corrosion resistance and durability. This type of steel is specifically designed to withstand harsh environments, making it an ideal choice for applications in the chemical, petrochemical, and marine industries. One of the key features of stainless steel grade 316LN is its low carbon content, which helps to prevent carbide precipitation during welding. This ensures that the material remains strong and resistant to cracking even under extreme conditions. In addition to its excellent mechanical properties, stainless steel grade 316LN also offers superior resistance to pitting and crevice corrosion. This makes it an ideal choice for use in aggressive environments where other materials may fail. Overall, if you’re looking for a reliable and long-lasting material for your next project or application, stainless steel grade 316LN should definitely be at the top of your list!

Chemical Composition

Stainless Steel Grade 316LN (UNS S31653) coiled tubing

The chemical composition of grade 316LN stainless steel is outlined in the following table.

Element Content (%)
Iron, Fe Balance
Chromium, Cr 16.0-18.0
Nickel, Ni 10.0-14.0
Molybdenum, Mo 2.0-3.0
Manganese, Mn 2.00
Silicon, Si 1.00
Nitrogen, N 0.10-0.30
Phosphorous, P 0.045
Carbon, C 0.03
Sulfur, S 0.03

Mechanical Properties

Stainless Steel Grade 316LN (UNS S31653) coiled tubing

The mechanical properties of grade 316LN stainless steel are displayed in the following table.

Properties Metric Imperial
Tensile strength 515 MPa 74694 psi
Yield strength 205 MPa 29732 psi
Modulus of elasticity 190-210 GPa 27557-30457 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break (in 50 mm) 60% 60%

Other Designations

Equivalent materials to grade 316LN stainless steel are given below.

ASTM A182 ASTM A213 ASTM A240 ASTM A240 ASTM A276
ASTM A193 (B8MN, B8MNA) ASTM A312 ASTM A336 ASTM A358 ASTM A376
ASTM A194 (B8MN, B8MNA) ASTM A403 ASTM A430 ASTM A479 ASTM A666
ASTM A688


ASTM A813


ASTM A814


DIN 1.4406


DIN 1.4429

Post time: Apr-09-2023