Hot rolled 1008 carbon steel is used to manufacture these bungs.
2.5 in. Mild Steel V-Band Exhaust Clamp & Stainless Steel Male/Female Flange Set
Mild Steel Weld-On Fuel Level Sender Flange For Flat Steel Fuel Tanks - 5 Hole
Race Part Solutions Mild Steel O2 Sensor Bung and Stainless Steel Plug Kit 02
76mm 3 inch x 90 Degree Mandrel Exhaust Bend Mild Steel! 1.5D 1.5mm Wall
2 Into 1 Collector Mild Steel 2" Inlets 2 1/4" Outlet
Flat 4-1 Header Collector – Mild Steel – 1.625" Inlets to 2.25" outlet, 100% USA