In the chemical industry, the stress-bearing members of containers,pipes,reactor vessels and other plant are usually made of austenitic steel or duplex steel or cladding of austenitic chromium-nickel steel.The residual ferrite content must be within a specific range compatible with the mechanical strength requirements or the item concerned.The AFM-300 was developed to facilitate accurate ferrite content measurement on welded seams and cladding items. It gives results that match for the standards of GB/T1954-2008, ISO 8249 and ANSI/AWS A4.2.
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