Blue Max MIG 309LSi description:
Top Features
Superior corrosion and crack resistance
Q2 Lot - Certificate showing actual deposit chemistry and calculated ferrite number (FN) available online

Typical Applications
Joins carbon steels and low alloy steels to austenitic stainless steels
“18-8” steels if the weldment will not be exposed to temperatures of 538 to 927°C (1000 to 1700°F)
ASTM A240 Type 309S
ASTM A743, A744 Type CG-12