AWS A5.9 ER316L

Alloy 316L has the same analysis as ER316, except that the carbon content is limited to a maximum of 0.03% in order to reduce the possibility of formation of intergranular carbide precipitation. This filler metal is primarily used for welding low carbon molybdenum-bearing austenitic alloys. This low carbon alloy is not as strong at elevated temperatures as ER316H.


  • AWS A5.9 ER316L
  • UNS S31683
Nominal Chemical Composition (%)
C Cr Ni Mo Mn Si P S Cu
0.03 max 18.0-20.0 11.0-14.0 2.0-3.0 1.0-2.5 0.30-0.65 0.03 max 0.03 max 0.75 max