A105 is an ASTM specification for steel forgings, primarily for carbon steel forged pipe components. The type of carbon steel wrought alloy involved is a low carbon, manganese and silicon steel similar to the AISI 1330, but with a lower manganese content.

AISI 1018 carbon steel round bars are made of carbon steel, and its composition includes carbon, chromium, manganese, molybdenum, phosphorus, sulfur and silicon. Carbon steel SAE1018 rods are commonly used for shafts, pins, rods, spindles, sprocket assemblies and a wide range of parts. The 1018 bar can be finely processed without any difficulty, and its chips are hard and continuous, so it can be processed into all shapes.

1025 carbon steel is a steel that contains only carbon as its main alloying element. These steels also contain 0.4 percent silicon and 1.2 percent manganese. Small amounts of copper, nickel, molybdenum, aluminum and chromium can also be detected in carbon steel.

1045 is characterized by medium carbon, medium tensile strength steel, which has quite good strength, machinability and reasonable weldability under hot-rolled conditions. 1045 round steel can be provided with hot rolling, cold drawing, rough turning or turning and polishing. By cold-drawing the 1045 steel bar, the mechanical properties can be improved, the dimensional tolerance can be improved, and the surface quality can be improved.