Whether it’s Special Bar Quality (SBQ) or Merchant Bar Quality (MBQ), carbon steel round bar is prevalent across multiple applications due to its strength, superior ductility, and weldability. SBQ grades include 1018, 1045, 1117, 1141, 1144, 1215, 12L14, Stressproof and Fatigueproof. These are stocked in a variety of sizes and finishes including hot rolled designed to meet various strength, machinability and weldabilty requirements. MBQ bar is produced to A-36 and most of the sizes are also produced to A529 Gr50 and A572 Gr50. MBQ products are widely used in applications requiring strength while offering superior ductility and weldability.
Popular Grades: 1215 | 1018 | 1045
Characteristics: Manganese, Phosphorus, Sulfur
Popular Applications: Crank and motor shafts, Construction, Bridges