What are the characteristics of metal 718?
Good mechanical properties – tensile, fatigue and creep-rupture
Yield strength, creep, and rupture strength properties are passing high
Highly immune to chloride and sulphide stress corrosion cracking
Resistant to binary compound corrosion and chloride particle stress corrosion cracking
High temperature resistant
Age-hardenable with a singular property of slow aging response that allows heating and cooling throughout tempering while not the danger of cracking.
Excellent fastening characteristics, immune to postweld age cracking
In what applications is metal 718 used?
Liquid fuel rocket motor elements
Cryogenic storage tanks
Valves, fasteners, springs, mandrels, tube hangers
Well head completion instrumentation and blow out preventers (BOP’s)
Gas turbine engine elements
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