309LSi

Comparable specifications
ASME SFA A 5.9: ER309LSi / ER309Si
EN ISO 14343-A: 23 12 L Si
Werkstoff Nr.: 1.4332

Description and applications*
Austenitic stainless steel filler wire with a low carbon content, which reduces the possibilities of intergranular carbide precipitation, while increasing the resistance to intergranular corrosion without the use of stabilizers such as niobium or titanium. The high silicon content improves the usability of the filler metal in the gas metal arc welding process.
Good performance under carburizing atmospheres. High temperature oxidation and corrosion resistance. High ferrite level.
This grade may be used for:
• joining and overlay of stainless steels of similar composition, such as AISI 309
castings, and for joining of 3Cr12;
• usage in contact with fused salts and in some cases of contamination by fuel ashes;
• applications in industrial furnace and boiler parts, annealing chambers, heat exchangers, fused salt treatment installations;
• overlay by submerged arc;
• intermediate layers by submerged arc welding of plates and cast materials with low carbon , stabilised and unstabilised austenitic CrNi coatings.

Weldable base materials*
* Illustrative, not-exhaustive list
All 300 series austenitic stainless steel, 3Cr12, mild steels (cladding)

All-weld metal mech. properties*
* For reference only values
Tensile strength (Rm): ≥ 510 N/N/mm2
Elongation: ≥ 25%
Yield Strength (Rp0.2): ≥ 320 N/mm2
Charpy-V Impact (R.T.): ≥ 50 J

Chemical composition *For reference only values
CMnSiSPNiCrMoCu
max1.000.65maxmax12.0023.00maxmax
0.032.501.000.0200.03014.0025.000.500.50
Standard packaging data*
Welding
process
Product typeDia (mm)Packing typeWeight
kg (lbs)
Length
mm (inches)
GMAW **filler wire0.80 - 1.20 (0.030 - 0.047)spools BS300 / D30015 (33)n.a.
GTAW **filler rod1.60 - 4.00 (1/16 - 5/32)cardboard boxes / tubes5 (11)1000 (39.4)
* Other sizes and packing types are available upon request
** GMAW: gas metal arc welding; GTAW: gas tungsten arc welding

Marking
Each filler rod for GTAW welding is durably marked with an identification traceable to the unique product type. Welding filler materials wound on spools or in coils are durably marked on the coil or spool with an identification traceable to the unique product type.
The outside of each unit package is suitably labelled with at minimum the following data: grade, diameter, heat, lot no., classifications.
CE marking type-testing performed and available.
Customized labels are available upon request.

Type approvals
Canadian Welding Bureau Cert. nr. NOV309LS (GMAW / GTAW)
DB Zulassung nr. 43097.07 (GMAW / GTAW)
TUV Nord Kennblatt nr. 06331 (GMAW) TUV Nord Kennblatt nr. 06332 (GTAW)

Lot classification
All our productions fulfil the Class S3 requirements acc. to EN ISO 14344.

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