Metalliteollisuuden Standardisointiyhdistys

This standard applies to all product types which exist or operate in space and defines the natural environment for all space regimes. It also defines general models and rules for determining the local induced environment.Project-specific or project-class-specific acceptance criteria, analysis methods or procedures are not defined.The natural space environment of a given item is that set of environmental conditions defined by the external physical world for the given mission (e.g. atmosphere, meteoroids and energetic particle radiation). The induced space environment is that set of environmental conditions created or modified by the presence or operation of the item and its mission (e.g. contamination, secondary radiations and spacecraft charging). The space environment also contains elements which are induced by the execution of other space activities (e.g. debris and contamination).This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.

This document specifies the properties of unalloyed and low-alloyed grey cast irons used for castings, which have been manufactured in sand moulds or in moulds with comparable thermal behaviour.NOTE This document can also be applicable to grey cast irons cast in permanent moulds, provided the related cast samples are casted under the same conditions as the castings.This document specifies the characterizing properties of grey cast irons by eithera) the tensile strength of cast samples,b) if agreed by the manufacturer and the purchaser, the tensile strength of samples cut from a casting,c) the hardness determined on the castings or on a cast-on knob.If agreed by the manufacturer and the purchaser, the combination of both tensile strength from option a) and hardness from option c) may be specified.This document specifies six grades of grey cast iron by a classification based on tensile strength determined on machined test pieces prepared from cast samples (see Table 1) and six grades of grey cast iron by a classification based on Brinell hardness (see Table 2).This document does not cover technical delivery conditions for iron castings; see EN 1559-1 [3] and EN 1559-3 [4].This document does not apply to grey cast irons used for pipes and fittings according to EN 877 [5].

This document defines the grades and the corresponding requirements for compacted (vermicular) graphite cast irons.This document specifies 4 grades of compacted (vermicular) graphite cast iron by a classification based on the minimum mechanical properties measured on machined test pieces prepared from cast samples or samples cut from a casting.This document does not cover technical delivery conditions for iron castings (see EN 1559-1 [1] and EN 1559-3 [2]).