Specification for heat-resisting steel billets, bars, forgings and parts (Ni 25.5, Cr 14.7, Ti 1.8, Mn 1.5, Mo 1.2, V 0.3) Ingestion-build-135476 BS EN 60898‑1 also applies

BS EN 60898‑1 also applies to circuit-breakers having more than one rated current

BS EN 60079-7:2007 replaces BS EN 60079-7:2003

This International Standard provides comprehensive guidance and specific statistical procedures for uncertainty estimation in air quality measurements including measurements of ambient air

Note: In addressing installations

Specification for heat-resisting steel billets, bars, forgings and parts (Ni 25.5, Cr 14.7, Ti 1.8, Mn 1.5, Mo 1.2, V 0.3) Ingestion-build-135476 BS EN 60898‑1 also applies1 Scope This British Standard specifies requirements for nickel chromium titanium manganese molybdenum vanadium heat resisting steel supplied in the following forms, and as parts. a) Bars for machining: solution treated, designation HR 52A. b) Billets and bars for forging: hot or cold worked and subsequently machined or ground, designation HR 52B. c) Forgings: solution treated, designation HR 52C.