ASTM A995 5A Butterfly Valve

An ASTM A995 5A butterfly valve is a premium high-performance quarter-turn rotary valve cast from Grade 5A super duplex stainless steel (UNS J93404 / CE3MN) to provide ultimate strength and corrosion immunity in severe-service lines. The 5A alloy formulation features a precisely balanced 50-50 ferritic-austenitic grain matrix heavily enriched with chromium, molybdenum, and nitrogen, yielding double the mechanical yield strength of standard stainless steels alongside an exceptionally high Pitting Resistance Equivalent Number (PREN greater than 40). The thin, hydrodynamic metallic disc rotates 90 degrees within a high-performance double or triple-offset body to deliver tight isolation with low operating torque. Offshore platform builders and desalination plant operators can eliminate crevice corrosion and maximize line isolation durability by importing certified ASTM A995 5A butterfly valves directly from specialized manufacturers in China via our advanced B2B commercial platform.