ER316L Filler Wire


Classification: ER316L (ISO 14343-1A: W 19 12 3 L)

Specification: AWS A 5.9

Form: Solid filler wire, 1 meter standard lengths for TIG wire, Spool form for MIG wire.


ER316L Chemical Composition and Mechanical Properties

ER316L Chemical Composition (AWS A5.9)
Element Range
 Carbon, C% 
0.03% Max.
 Chromium, Cr% 18.0- 20%
%Nickel, Ni% 11.0- 14%
Molybdenum, Mo%   2.0- 3.0%
 Manganese, Mn% 1.0- 2.50%
 Silicon, Si %
0.30– 0.65% 
 Phosphorus, P% 0.03% Max.
  Sulfur, S% 0.03% Max.
 Copper, Cu% 0.75% Max.
ER316L Mechanical Properties (AWS A5.9)
Properties Value
Tensile Strength, Ksi (MPa) 70, (490) 
Yield Strength, Ksi (MPa)
59, (406)
Elongation, % minimum 30
Toughness Not specified

Note: As per AWS A5.9, only chemical composition test is required for ER316L. Above Mechanical properties are not specified in AWS A5.9.


ER316L Applications

ER316L is 19 Cr, 12.5 Ni, and 2.5 Mo alloyed solid filler wire rod as per AWS A5.9 specification.

The F Number of ER316L is F Number 6.

ER316L is used for welding of similar metallurgy materials such as AISI 316L, 1.4401 X5CrNiMo17-12-2, 316Ti and 316Nb alloys.

Welding Shielding gas for ER316L Wire

ER316L shall be used only with Inert Gas such as Argon and Helium for TIG welding.

See also  How to do Metal Marking for Welding

ER316L when used for MIG welding, Argon with little addition of Oxygen is used to increase weld pool fluidity. 316L weld pool is inherent to be sluggish and oxygen addition increase its fluidity.

ER316L meaning

ER316L is a solid TIG-MIG filler wire rod used for welding AISI 316L stainless steel. Notable 316 metallurgy grades are TP316L, 1.4401 X5CrNiMo17-12-2, F316L, and SUS 316L.

  • ‘ER’ means Electrode
  • ‘316’ means the material type
  • ‘L’ means Low Carbon

Chemical composition and mechanical properties of ER316L is stated in table above as required by AWS A5.9 specification for stainless steel welding electrodes.

ER316L Filler wire specification is AWS A5.9. ISO equivalent specification for ER316L is ISO 14343-1A. ISO equivalent filler wire for ER316L is W 19 12 3 L.

ER316L Test Certificate (MTC)

Click here to download ER316L MTC (material test certificate). This is an actual test certificate of Er316L filler wire rod.


Material Welding is run by highly experienced welding engineers, welding trainers & ASNT NDT Level III bloggers. We strive to provide most accurate and practical knowledge in welding, metallurgy, NDT and Engineering domains.