13CrMo45 steel work is chrome molybdenum steel intended for used in the fabrication of weldable steel pressure vessels and boilers in elevated temperature service.
AISI 1045 belongs to high carbon steel under american standard. AISI 1045 is also a quenching and tempering steel, which owns high strength. AISI 1045 alloy steel can be produced into hot rolled round bars and forged bars and so on.