Mar 4 2013
Topics Covered
Introduction
Chemical Composition
Mechanical Properties
Other Designations
Applications
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.
The following datasheet provides an overview of stainless steel grade 316LN.
Chemical Composition
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
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
|
Applications
Grade 316LN stainless steel is widely used in the following applications:
-
Trauma nails
-
Orthopedic implants
-
Neurological applications
-
Surgical instruments