AISI 1018 vs. AISI 1022

[davster01]

Hi,

We have asked to have some pins fabricated using AISI 1018 steel. The machine shop is asking us if they can use AISI 1022 instead. I know the mechanical properties are actually better but more brittle due to slightly higher carbon content. But is there a chance of galvanic corrosion if 1018 steel comes in contact with 1022 steel?

Thank you
davster01

 

[metengr]

But is there a chance of galvanic corrosion if 1018 steel comes in contact with 1022 steel?

No. Other than the slightly higher carbon content in 1022, from a practical standpoint they are very similar materials in terms of corrosion resistance.

 

[CoryPad]

Yes you can use the 1022 instead of 1018. The 1022 will not be any more brittle than the 1018 under regular usage.