Are fasteners that meet A193 B8M CL2 or B8 Cl2 standards magnetic?
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As is well known, conventional austenitic stainless steel materials that have undergone solution treatment are non-magnetic. So, do the fasteners of A193 B8M CL2 or B8 Cl2 produced in accordance with HG/T 20613 possess magnetism? I have conducted relevant tests; some fasteners produced by certain suppliers are magnetic, while those produced by other suppliers are not. What is your experience in this regard? Or do you think it’s normal and acceptable to have magnetism?
Is the standard being applied the same one, and which standard is it? Solid solution determines whether magnetism is present or not.
A193 6.2 specifies that all austenitic materials require solution treatment of carbides.
Austenitic stainless steel is normally non-magnetic or only weakly magnetic; if it is magnetic, it is usually due to inadequate solution treatment.
Thank you for your reply. Theoretically, it is non-magnetic, but most stainless steel castings are still magnetic
According to SA351 requirements, all austenitic castings must undergo solution treatment. But in reality, many stainless steel valve castings become magnetic – what is missing? Lack of material inspection and heat treatment processes after completion. We can definitely do it.