Feb 28 2013
Topics Covered
Introduction
Chemical Composition
Mechanical Properties
Applications
Introduction
Grade 201 is a cheaper alternative to the traditional Cr-Ni austenitic stainless steels such as grade 304. Grade 201LN stainless steel has good resistance to oxidation, easy fabrication, and excellent toughness even in low temperatures. Its high elongation allows bending and forming. It is not expensive as lower cost nitrogen and manganese are added as partial alternative for nickel. The yield and tensile strengths of grade 201LN increases when temperature is decreased. The steel is non-magnetic, and is available in sheet and plate forms.
Grade 201LN stainless steel is quite similar to grade 304; however there are advantages unique to grade 201LN. It has good resistance to corrosion, excellent mechanical strength, and increased hardness than grade 304.
The following datasheet provides an overview of grade 201LN stainless steel.
Chemical Composition
The chemical composition of grade AL 201LN™ stainless steel is outlined in the following table.
|
Element |
Content (%) |
|
Iron, Fe |
71 |
|
Chromium, Cr |
16-17.5 |
|
Manganese, Mn |
6.40-7.50 |
|
Nickel, Ni |
4-5 |
|
Copper, Cu |
≤ 1 |
|
Silicon, Si |
≤ 0.75 |
|
Nitrogen, N |
0.10 - 0.25 |
|
Phosphorous, P |
≤ 0.045 |
|
Carbon, C |
≤ 0.030 |
|
Sulfur, S |
≤ 0.015 |
Mechanical Properties
The mechanical properties of grade 201LN stainless steel are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
650 - 880 MPa |
94274- 127633 psi |
|
Yield strength |
350 - 550 MPa |
50763-79770 psi |
|
Elongation |
8 – 25% |
8 – 25% |
Applications
Grade 201LN is used widely in the transportation industry.
The following are the other applications of grade 201LN stainless steel:
-
Strapping
-
Clamps
-
Cable racking
-
Cryogenic vessels