ALFA ER309L Stainless Steel MIG Welding Wire

ALFA ER309L Stainless Steel MIG Welding Wire

Rs. 0

ALFA

MIG WELDING WIRE

500 In Stock

ALFA 309L / ER309L is an extra-low-carbon austenitic stainless steel filler wire. It deposits approximately 24% Cr / 13% Ni austenitic stainless steel weld metal with high ferrite content, allowing the weld metal to tolerate dilution from carbon and low-alloy steels without hot cracking. The deposited weld metal is of radiographic quality.

Product Specifications

Specification Details
Brand ALFA
Product Name ALFA 309L Stainless Steel Welding Wire
Identification ER 309L
Classification AWS A 5.9: ER309L
BS Classification BS 2901-90 309 S92
DIN Classification DIN 8556-86 WSGX2CrNi 24.12
Product Type Extra Low Carbon Austenitic Stainless Steel Filler Wire
Welding Current DC (-)
Shielding Gas Argon + 2% O₂
Gas Flow Rate 16–21 L/min
Ferrite Content 8–16 FN
Weld Quality Radiographic Quality
Available Sizes 0.8 mm, 1.0 mm, 1.2 mm
Weight / Spool 12.5 kg

Chemical Composition

Element Range / Maximum
Carbon (C) 0.03% Max
Manganese (Mn) 1.0–2.50%
Silicon (Si) 0.30–0.65%
Chromium (Cr) 23.0–25.0%
Copper (Cu) 0.50% Max
Nickel (Ni) 12–14%
Molybdenum (Mo) 0.50% Max
Sulphur (S) 0.03% Max
Phosphorus (P) 0.03% Max

Mechanical Properties

Property Value
Tensile Strength (TS) 540–650 MPa
Elongation (L=4D) 35–45%
CVN Impact Temperature 0°C
CVN Impact Value 50–100 Joules

Typical Applications

  • Dissimilar joints between stainless steel and mild or low-alloy steel
  • Joining ferritic-martensitic 410 and 430 stainless steels
  • Buffer layer on mild and low-alloy steels before overlaying
  • Welding similar-composition 309Mo stainless steels
  • Joining 316L / 317L stainless steel to carbon or low-alloy steel
  • Welding ASTM stainless steels including 409 and 409S
  • Applications involving 309S and 309 grades

Corrosion Resistance

ALFA 309L provides good resistance to general and intergranular corrosion, as well as good resistance to oxidising acids and cold reducing acids.

Packing Details

Wire Diameter Weight / Spool
0.8 mm 12.5 kg
1.0 mm 12.5 kg
1.2 mm 12.5 kg


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