This document specifies a subjective method for measuring sound attenuation of hearing protectors at the threshold of hearing
NOTE 3 Some requirements apply only for a specified range of rated loads
This reference model is based on a component architecture that places the focus of the standards on component interfaces for information exchange between applications in a control centre environment
repeatability
0 mm test sieve but is retained on a 10
Specification for nickel-chromium-cobalt-aluminium-molybdenum-titanium heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 15, Co 14.2, Al 5, Mo 4, Ti 4) Ingestion-build-260237 This document specifies a subjective1 Scope This British Standard specifies requirements for nickel chromium cobalt aluminium molybdenum titanium heat resisting alloy supplied in the following forms, and as parts. a) Bars and extruded sections for machining: solution treated, designation HR 4A. b) Billets and bars for forging: hot or cold worked and subsequently machined or ground, designation HR 4B. c) Forgings: solution treated, designation HR 4C.
