SAE 1022 carbon steel for automobile outer tube
1022 is a general purpose low tensile low hardenability carbon steel generally supplied in the black hot rolled condition, with a typical tensile strength range 360 - 560 Mpa and Brinell hardness range 100 - 170.Characterised by excellent weldability, fairly good machinability with reasonable strength and good ductility.
1022 due to its very low hardenability will through harden only in very small sections to relatively moderate strength levels, and is therefore generally used in the as rolled condition. It can however be carburised achieving case hardnesses over Rc 65 with smaller sections, reducing as section size increases. Core strength will remain as supplied for all sections. Alternatively it can be carbonitrided offering some advantages over standard carburising.It will not respond satisfactorily to flame or induction hardening due to its low carbon content, nor to nitriding due to a lack of suitable alloying elements.
1022 is used by all industry sectors for applications involving welding or when high strength is not necessary, plus lightly stressed carburised parts.
Typical applications : General Engineering Parts and Components, Welded Structures etc. or Carburised: Camshafts, Light Duty Gears, Gudgon Pins, Ratchets, Spindles, Worm Gears etc.
| Chemical Composition |
| | Min. % | Max. % |
| Carbon | 0.16 | 0.24 |
| Silicon | 0.10 | 0.40 |
| Manganese | 0.70 | 1.40 |
| Phosphorous | 0 | 0.05 |
| Sulphur | 0 | 0.05 |
| Typical Mechanical Properties - Hot Rolled Condition |
| Tensile Strength Mpa | 550 |
| Yield Strength Mpa | 330 |
| Elongation in 50mm % | 27 |
| Hardness Brinell HB | 150 |
