Specification for Chromium-nickel-copper-molybdenum corrosion resisting steel (precipitation hardening) billets, bars, forgings and parts (1270 MPa to 1470 MPa)
This British Standard specifies characteristics of a chromium-nickel-copper-molybdenum corrosion resisting steel supplied in the following forms, and as parts, for general aerospace use:
forging stock and billets and bars for subsequent working: softened, designation S145A;
forgings: solution treated, designation S145C;
forgings: solution treated and precipitated, designation S145G;
black bar for machining: solution treated, designation S145B;
black bar for machining: solution treated and precipitated, designation S145F;
bright bar for machining: solution treated, designation S145D;
bright bar for machining: solution treated and precipitated, designation S145H.
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