Overview
Grade 316LN is a nitrogen-strengthened version of Type 316L. By means of solid solution strengthening, the nitrogen provides significantly higher yield and tensile strength as annealed than Type 316L without adversely affecting ductility, corrosion resistance or non-magnetic properties. In the hot rolled unannealed condition, yield strengths of 75 ksi (518 MPa)or higher can be achieved for bar diameters up to 1.375in (34.925 mm).
ASTM A213 316LN stainless steel tube has good resistance to atmospheric corrosion and long-term resistance to general corrosion when embedded in concrete. In the 15 week corrosion macrocell test in simulated concrete pore solution, 316LN had an average corrosion rate less than 0.25 micro-meter/yr. In general, the corrosion resistance of 316LN steel is similar to Type 316L. The higher nitrogen content enhances chloride pitting and crevice corrosion resistance.
The Grade 316LN withstands not only ordinary rusting but also most of the organic and inorganic chemicals. It resists corrosion by nitric acid and sulfurous acid compounds. It also has good intergranular corrosion in the as-annealed and as-welded conditions due to its low carbon content. Some intergranular attack may occur in the hot rolled unannealed condition.
Specification
ASTM A213/A213M-21a Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
316LN Stainless Steel Pipe & Tubes Specification | ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312 |
316LN Stainless Steel Pipe & 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. |
316LN Stainless Steel Pipe & Tubes Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
316LN Stainless Steel Pipe & Tubes Outer Diameter Size | Seamless - 1/2"NB TO 18"NB |
316LN Stainless Steel Pipe & Tubes Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
316LN Stainless Steel Pipe & Tubes Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
316LN Stainless Steel Pipe & Tubes Ends | Plain Ends / Beveled Ends |
316LN Stainless Steel Pipe & Tubes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
316LN Stainless Steel Pipe & Tubes Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
316LN Stainless Steel Pipe & 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 |
316LN Stainless Steel Pipe & 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
Element | Min | Max |
C | - | 0.03 |
Mn | - | 2 |
Ni | 13 | 15 |
Cr | 17 | 19 |
Mo | 2 | 3 |
S | - | 0.1 |
Si | - | 0.75 |
P | - | 0.25 |
Mechanical Properties
Temper | Annealed | Cold worked | ||
Tensile Rm | 75 | ksi (min) | 125 | ksi (min) |
Tensile Rm | 515 | MPa (min) | 860 | MPa (min) |
R.p. 0.2% Yield | 30 | ksi (min) | 100 | ksi (min) |
R.p. 0.2% Yield | 205 | MPa (min) | 690 | MPa (min) |
Elongation (2"or 4D gl) | 35 | % (min) | 15 | % (min) |
Physical Properties
Specific Heat (0-100°C) | 485 | J.kg-1.°K-1 |
Thermal Conductivity | 16.3 | W.m -1.°K-1 |
Thermal Expansion | 16.5 | mm/m/°C |
Modulus Elasticity | 200 | GPa |
Electrical Resistivity | 7.4 | μohm/cm |
Density | 7.99 | g/cm3 |
Applications
1. Orthopaedic implants
2. Trauma nails
3. Neurological applications
4. Surgical instruments
