MIG WIRE - STAINLESS STEEL, ER309LSI 15KG

Technical Specs:

ER309LSi is a stainless steel TIG welding wire designed for welding 23%Cr-12%Ni stainless steels, especially when joining dissimilar metals like carbon steel to stainless steel. It's known for its high silicon content, which enhances arc stability and provides a smooth weld bead appearance. ER309LSi is typically used for welding austenitic stainless steels, including types 304 and 347, and for applications requiring high corrosion and heat resistance. 

Key Features and Specifications:

AWS Classification:

ER309LSi 

Composition:

Carbon: 0.03% max 

Chromium: 23.0-25.0% 

Nickel: 12.0-14.0% 

Manganese: 1.0-2.5% 

Silicon: 0.65-1.00% 

Molybdenum: 0.75% max 

Phosphorus: 0.03% max 

Sulfur: 0.03% max 

Typical Mechanical Properties (as welded):

Yield Strength: 58,000 psi (400 MPa) 

Tensile Strength: 87,000 psi (600 MPa) 

Elongation: 48% 

Reduction of Area: 60% 

Charpy V: 95 ft-lb (130 J) 

Brinell Hardness: 160 HB 

Rockwell B Hardness: 85 HRB 

Applications:

Welding of similar 23%Cr-12%Ni stainless steel alloys, both wrought and cast. 

Joining dissimilar metals, particularly carbon steel to stainless steel. 

Applications where high corrosion and heat resistance are required. 

Overlays and buttering passes. 

Benefits:

High corrosion resistance in various environments 

Excellent weldability, particularly in dissimilar metal applications 

Good resistance to crack formation