Carbon Steel 45 and Magnetism

[the75animal]

I am looking at having some custom gears made. The company who is going to make them is saying they want to make them out of "Carbon Steel 45". I don't know what this is, but I requested that the gears be non-magnetic. Can anyone point me to a recourse that can explain this steel's properties? Especially as they pertain to magnetism.
Thanks

 

[EricZhao]

carbon steel 45 is just SAE1045. It is magnetic.

 

[swall]

Carbon steels are those steels with no intentional alloy additions, such as chromium. The "45" suggests that the steel grade would be SAE 1045.Carbon steels are all strongly magnetic (ferromagnetic). But, perhaps you or your supplier are confusing "magnetic" with "magnetized"?