StarBlaze MIG Wire ER309L

StarBlaze MIG 309L (classified under AWS A5.9 as ER309L) is a premium, extra-low carbon solid stainless steel MIG welding wire. It features an elevated chromium and nickel content, making it the industry standard for joining dissimilar metals—specifically welding stainless steels to mild or low-alloy carbon steels—and for applying stainless steel buffer layers.

Core Product Features
Dissimilar Metal Mastery: The over-alloyed chemistry (23% Cr / 13% Ni) compensates for dilution when welding stainless steel to carbon steel, preventing the formation of brittle martensite structures.
Intergranular Corrosion Resistance: The extra-low carbon content (? 0.03%) limits chromium carbide precipitation at the grain boundaries, preserving maximum corrosion protection.
Hot-Crack Resistance: Formulated to maintain a high ferrite content in the weld deposit, providing robust resistance against hot cracking during cooling.
Precision Layer-Wound: Chemically cleaned and precisely wound on spools to ensure uniform feeding, minimal liner friction, and low spatter.

AWS Specification: AWS A5.9 / A5.9M (Classification: ER309L)
EN ISO Specification: EN ISO 14343-A (Classification: G 23 12 L)
UNS Number: S30983
Werkstoff Number (Europe): 1.4332