AISI/SAE 1045, in compliance with ASTM A 29/A29M -16: 1045, DIN 1.1191 and JIS S45C/S48C, is a medium carbon steel with optimal hot forgeability, supplied in annealed condition, with hardness Estimated 179 HBN (~ 89 HRB) as cold drawn, this steel is used in various profiles, plates, slabs including 1045 hexagonal bar, 1045 round bar, it is highly used thanks to its versatility and mechanical resistance.
AISI 1045, in compliance with ASTM A 29/A29M -16: 1045, DIN 1.1191 and JIS S45C/S48C, is a medium carbon steel with excellent properties for various applications. Its chemical composition, with a carbon range between 0.43%- 0.50%, and manganese between 0.60% and 0.90%, offers an adequate combination of resistance and machinability, we supply it in annealed condition, with an estimated hardness of 179 HBN (~ 89 HRB) as cold drawn.
Regarding its mechanical properties at room temperature, it has a tensile strength of 630 MPa (91,000 Lb/in2), an elastic limit of 530 MPa (77,000 Lb/in2), elongation of 12%, and an area reduction of 35 %, these values, although estimated minimum, provide a useful reference to evaluate the general characteristics of the steel according to SAE J414a, however, for special mechanical values they must be consulted and agreed upon for special productions.
Notable characteristics of AISI 1045 include its good hot forgeability, weldability, and favorable response to martensite transformation hardening. In accordance with SAE J414a, it offers machinability of 55% compared to 1212 AISI steel (referred to as 100%), it is used in applications for the manufacture of transmission parts and mechanical components such as arrows, bolts, impellers, among others, such as construction, It requires caution in cold bending to avoid cracks. In addition, it can replace 1018 AISI steel and low alloy steels such as 4140 or 4340, when mechanical demands are not required, such as backing plates, footrests or end plates.
In the welding process, although it is not desirable, it is suggested to follow recommendations such as preheating, controlled cooling, to minimize risks of fracture in the welded area, heat treatment, hardening, specific precautions are suggested to obtain mechanical properties and hardness. desired, in summary, AISI 1045 is a versatile solution for various mechanical, automotive and industrial applications, this steel is supplied in profiles such as plates and 1045 round bar.
