304L Stainless Steel

Type 304L stainless steel is low carbon version of 304 alloy, it is also austenitic steel, the “L” stand for LOW carbon, the carbon content is max 0。035%, 304L exhibits excellent corrosion resistance thanks to the lower carbon content, and has good fabrication and outstanding formability characteristics。

TP304L 1.4307 1.4306 Chemical Composition

304L stainless steel is the standard 18/8 stainless steel, and it has a minimum of 18% chromium and 8% nickel content, compared to 304 stainless steel, these two alloys are very similar, but there is one key difference in carbon content, the maximum carbon content in 304 0。08%。

CMnPSSiNiCrN
TP304L0.0352.000.0450.0301.08-1318-20
1.43060.0300.800.0400.0151.010-1218-190.11
1.43070.0300.800.0400.0151.08-1017.5-19.50.11

TP304L 1.4307 Mechanical Properties

304L grade has slightly lower mechanical properties than the standard 304 grade, this means that 304L stainless steel is weaker than the standard 304 alloy, but it is still widely used in many applications。

Tensile Strength(Mpa) MaxYield Point(Mpa) MaxElongation(%)Hardness Min
TP304L4851703590
1.4307480-6801804090

304L Stainless Steel Equivalent Grades

AISIUNSDINENJISGB
304LS304031.4307X5CrNi18-10SUS304L022Cr19Ni10

304L Stainless Steel Physical Properties

Density Melting Point Specific heat Thermal conductivity [W/(m·K)] Coefficient of Expansion( 10-6/K ) Electrical Resistivity Elastic modulus Magnetic
g/cm3 (℃) [J/(kg·K)] 0~100 ℃ 100 ℃ 500 ℃ 0~100 ℃ 0~500 ℃ ( Ω·mm2/m kN/mm2
7.99 1398~1427 500 16.3 22.2 16.9 18.4 720 200 a little after cold worked

Benefits Of Using 304L Stainless Steel

In practice, both 304 and 304L can be used for many of the same applications, dual certified stainless steel available。

  • Low carbon content eliminates carbon precipitation in the welding process
  • Can be used in severe corrosive environments
  • Weld annealing only required in high stress applications
  • Very similar to Type 304