Stainless Steel - Grade 301LN (UNS S30153)

Feb 26 2013

Topics Covered

Introduction
Chemical Composition
Mechanical Properties
Other Designations
Applications

Introduction

Grade 301 is an austenitic stainless steel that has a high work-hardening rate. Grade 301LN stainless steel is similar to grade 301L but with low carbon for improved ductility and welding of heavy sections. Grade 301LN has higher nitrogen content so as to compensate for the lower carbon content.

The following datasheet provides an overview of grade 301LN stainless steel.

Chemical Composition

The chemical composition of grade 301LN stainless steel is outlined in the following table.

Element Content (%)
Iron, fe Balance
Chromium, Cr 16-18
Nickel, Ni 6-8
Manganese, Mn 2 max
Silicon, Si 1 max
Nitrogen, N 0.07-0.20
Phosphorous, P 0.045 max
Carbon, C 0.03 max
Sulfur, S 0.03

Mechanical Properties

The mechanical properties of grade 301LN stainless steel are displayed in the following table.

Properties Metric Imperial
Tensile strength (Outokumpu typical, cold rolled strip/sheet; EN 10002-1) 765 MPa 111000 psi
Yield strength (@strain 0.200 %) 350 MPa 50800 psi
Elastic modulus 193 GPa 27992 ksi
Poisson’s ratio 0.300 0.300
Elongation at break (in 50 mm) 47% 47%

Other Designations

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Equivalent materials to grade 301LN stainless steel are given below.

  • ASTM A666
  • JIS G4305
  • EN 10088-2
  • EN 1.4318
  • JIS SUS 301L

Applications

Grade 301LN stainless steel is primarily used in rail car structural components mostly roll-formed, brake-pressed or stretch-formed to profiles; however it can also be used flat.

The following are the other applications of grade 301LN steel:

  • Springs
  • Toaster
  • Curtain walls
  • Screen frames
  • Airframe sections
  • Stove element clips
  • Automotive wheel covers
  • Highway trailer components
  • Wiper blade holders and clips

 

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