This British Standard specifies requirements for inspection and testing, chemical composition, condition, heat treatment and mechanical properties of precipitation hardening chromium-nickel-copper-molybdenum steel castings having a strength of1 250 MPa. (Cr 14.0, Ni 4.5, Cu 2.5, Mo 1.5).

Requirements are also given for the rectification of defects and the detection of flaws.

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