STAINLESS STEEL FOR FLAPPER VALVES

摘要

The invention relates to a cold rolled and hardened martensitic/austenitic stainless steel strip for flapper valves in the compressors, wherein the steel strip is made from steel comprising in weight % (wt. %): C0.3 –0.5 Si0.2 –0.8 Mn 0.2 -1.0 Cr 12.0 –15.0 Mo 0.50 -2.00 N 0.02 -0.15 V 0.01 -0.20 has a matrix consisting of tempered martensite and between 5 and 15 volume % austenite and a tensile strength (Rm) of 1970-2300 MPa.