Specification for high expansion heat-resisting steel bar and wire for the manufacture of bolts, studs, set screws and nuts (Ni 25.5, Cr 15, Ti 2, Mn 1.5, Mo 1.25, Si 0.7, V 0.3) (limiting ruling section 50 mm) Ingestion-build-225643 The letter code for function

The letter code for function identification is given in the Tables of BS 1646‑1 and BS 1646‑2

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BS EN 16157-3:2018 includes some technical changes with respect to DD CEN/TS 16157‑3:2011

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Specification for high expansion heat-resisting steel bar and wire for the manufacture of bolts, studs, set screws and nuts (Ni 25.5, Cr 15, Ti 2, Mn 1.5, Mo 1.25, Si 0.7, V 0.3) (limiting ruling section 50 mm) Ingestion-build-225643 The letter code for function1 Scope This British Standard specifies requirements for high expansion heat resisting steel bar and wire in the following forms for the manufacture of bolts, studs, set screws and nuts. a) Bar with a diameter over 25 mm up to and including 50 mm and wire with a maximum diameter of 50 mm for machining: softened, cold worked, solution treated and machined or ground, designation HR 650A. b) Bar with a diameter over 25 mm up to and including 50 mm and