non-magnetic structural steels

huangyhg

non-magnetic structural steels
anyone have a good list of magnetic properties for "non-magnetic" steels?
i have an application for designing a vertical reciprocating conveyor(vrc or material handling lift) typically fabricated from a36 structural shapes (w, l, c, hss sections).  we need to install a lift in a research facility room with mri (high magnetic field) equipment.  they ask that all parts be of non-magnetic steel.  i also have to address mechanical interlocks & hardware.
i'm thinking of aluminum, 304 stainless.  we have fabricated a 304 stainless lift but i'm not sure of the degree of non-magnatism.
any references or list would be appreciated.
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  when i worked for the navy, we used non-mag steels on minesweepers.  i remember testing bolts, etc. with a small device (magnometer?).  if you have access to mil-spec's, i know their is one on non-mag steels.  it had all of the general properties, including magnetism.  iirc, it was unclassified so you should be able to get a copy.