SAE J775_200411

This specification supplies engineers and designers with: a Poppet valve nomenclature b Poppet valve alloy designations c Chemical compositions of poppet valve alloys d A guide to valve alloy metallurgy and heat treatments e General information on properties of valve alloys f A guide to the application of valve alloys g A description of valve design and construction, and their relation to valve alloy selection h Valve gear design considerations that affect valves This revision of SAE J775 was intended to align SAE standard with ISO standard in order to facilitate global applicability of the standard high temperature alloys and valve materials. Nearly 90% of the information from the current SAE standard and UNS designations have been reproduced with comparison tables incorporating equivalent and or near equivalent DIN and ISO 683-15 designations. Text revisions have been based on current worldwide design application trends and comparison of properties in the tables. Unlike the ISO document, this document applies to materials and properties applied in the design and applications of internal combustion engine valves and does not cover the raw material properties or procurement conditions.