The major
differences between 202 and 304 stainless steels are
in the nickel and chromium contents.
202 has 16-18% chromium and 0.5-4.0% nickel, whilst
304 has 18-20% chromium and 8-10.5% nickel. ... Both are austenitic
steels and are essentially non-magnetic, but will become temporarily magnetic by working them.
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