| Analysis | Applications | Machineability_and_Weldability | Heat_Treating | Tolerances | Speedy Metals items |
C1045 is a silicon killed medium carbon steel. Higher carbon content imparts increased strength over low carbon steels, such as 1018. Response to heat treatment is excellent and the resultant mechanical properties which can be obtained permit wide usage in the production of machinery parts and shafts. 1045 can be hammer forged, machinability is good, but forming and welding qualities are limited.
1045 cold roll bars conforms to ASTM A29, A108
1045 has a wide variety of applications. It is used for machinery parts, die forging, hot upsetting, gears, crankshafts, shafts, axles, bolts, studs, pinions, casters and support plates. Can be hammer forged. 1045 can be used where greater strength is required than can be obtained from the lower carbon steels. It responds to heat treatment, and a wide range of properties can be obtained. When higher dimensional accuracy and straightness are required in the productions of shafts are required, 1045 Turned, Ground and Polished Precision Shafting is recommended
Machinability is rated at 64% of B1112. Average cutting speed 95-120 ft/min.
1045 is not readily welded, due to it's higher carbon content. On thin sections, arc or gas welding can be used without preheating, but in welds and joints on thicker sections, preheating is necessary. Stress relieving after welding is also recommended.
1045 is a water or oil quenched metal. The recommended quenching temperatures are 1550°F for water and 1575°F for oil. A wide range of mechanical properties can be obtained by tempering at different temperatured between 700°F and 1300°F. Tempering below 700°F should be avoided. 1045 can be flame or induction hardened, but not recommended for carburizing or cyaniding treatments.