Abrafil 309LSi

Abrafil 309LSi

MIG 309LSi

Download data sheet Request safety data sheet Request a certificate
Add to quote

Product description

It is specially designed for welding dissimilar steels, in particular the assembly of austenitic stainless steels with carbon steels. Thanks to its optimized composition, it is the preferred choice for meeting the technical requirements of industrial applications requiring reliability, corrosion resistance and bead quality.

Product application instructions

ALLOY UNS DIN W – Nr.
304 S30400 X5 CrNi 18 10 14.301
304L S30403 X2 CrNi 18 11 14.306
321 S32100 X10 CrNiTi 18.9 14.541
347 S34700 X6 CrNiNb 18 10 14.550
– – X 10 CrSi 6 14.712
– – X 10 CrAl 13(X 10 CrAl 18) 1.4724 (1.4742)
309 S30900 X 15 CrNiSi 20 12 14.828
– – G – X25 CrNiSi 20 14 14.832
– J92602 G – X25 CrNiSi 18 9 14.825
– J92603 G – X40 CrNiSi 22 9 14.826
305 J92701 G – X10 CrNiN 18 10 14.312

Classification

AWS A5.9 DIN 8556 Werkstoff Nr.
ER 309LSi SG-X2 CrNi 24 12 1.4332

Chemical analysis (%)

C If Mn Cr P S
0.025 0.9 1.8 23.5 < 0,025 < 0,015

Mechanical characteristics

Rm (MPa) Rp0.2 (MPa) A5 (%) Av - ISO - V
540 420 30 65 J: + 20°C

Why choose ABRAFIL 309LSi?

1. Applications on dissimilar steels

  • ABRAFIL 309LSi is perfect for welding stainless steel to mild or low-alloy steel.

  • It acts as a buffer layer between two very different materials (e.g. 304L to S235JR).

2. Excellent corrosion resistance

  • Rich in chromium (~23%) and nickel (~13%), it offers excellent protection against oxidation and corrosion, even at high temperatures.

3. Low carbon (L)

  • This considerably reduces the risk of intergranular corrosion, especially in high-temperature environments.

4. Higher silicon content (Si = Silicon)

  • Si improves the wettability of the melt, giving :

    • Smoother weld seams,

    • More fluidity,

    • Fewer projections.

5. For use in manufacturing or repair

  • Very common in boiler making, petrochemicals, maintenance, or the food industry.