StarBlaze MIG Wire ER307

StarBlaze MIG 307 (primarily supplied under the enhanced specification MIG 307Si) is a high-manganese, precision layer-wound solid austenitic stainless steel MIG welding wire. It is specifically engineered under AWS A5.9 as ER307 / ER307Si for welding highly dissimilar steels, high-manganese alloys, and unalloyed armor or ballistic grade steels.

Core Product Features
“StarBlaze MIG 307Si is a precision layer-wound solid wire designed for MAG welding of stainless and heat-resistant steels. It deposits a Cr-Ni-Mn alloyed weld metal (C-18Cr8Ni6Mn) and delivers excellent arc stability with a smooth bead appearance.”
Crack-Resistant Toughness: The heavily manganese-alloyed matrix provides a fully austenitic structure that absorbs structural stress, offering superior resistance against cracking under extreme impact.
Dissimilar Metal Joining: Specially engineered to create secure structural bonds between carbon/low-alloy steels and austenitic stainless steels without embrittlement.
Enhanced Fluidity (Si-Modified): The optimized silicon content dramatically improves weld pool fluidity, delivering ultra-clean wetting at the bead toes and a finely rippled finish.
Buffer Layer Cushioning: Serves as an ideal stress-relaxing cushion layer or buffer pass deposited on difficult, work-hardenable metals prior to applying a hardfacing overlay.

AWS Specification: AWS A5.9 / A5.9M (Classification: ER307)
EN ISO Specification: EN ISO 14343-A (Classification: G 18 8 Mn)
Werkstoff Number (Europe): 1.4370