BS ISO 185:2020 pdf free.Grey cast irons – Classification.
BS ISO 185 This document specifies the properties of unalloyed and low-alloyed grey cast irons used for castings that have been manufactured in sand moulds or in moulds with comparable thermal behaviour.This document specifies the characterizing properties of grey cast irons by any of the following:a) 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] if agreed between the manufacturer and the purchaser, the hardness of the material determined on castings or on a cast-on knob. If agreed by the manufacturer and the purchaser, the combination of tensile strength from option a) or option b) and plus hardness from option c) can be specified. Information on specifying a combination of tensile strength and hardness is given in Annex B.This document specifies eight grades of grey cast iron according to tensile strength (see Table 1) and six grades of grey cast iron according to Brinell hardness (see Table 2).This document does not apply to grey cast irons used for pipes and pipe fittings and continuous cast products.This document does not cover technical delivery conditions for grey iron castings.NOTE General information on the engineering properties of grey cast irons is provided in ISO/TR 10809-1.Samples representative of the material shall be produced at a frequency in accordance with the process quality assurance procedures adopted by the manufacturer or as otherwise agreed with the purchaser.8.3.3 Separately cast samples The samples shall meet the requirements of Figure 1 The samples shall be poured vertically.The moulds used to cast separately cast samples shall have comparable thermal behaviour to the moulding material used to cast the castings. The moulds may be made for casting several samples simultaneously.The samples shall be removed from the mould at a temperature of < 500 °C. By agreement between the manufacturer and the purchaser, samples may be removed from the mould at a temperature of> 500。C,provided the castings are also to be removed from the moulds at this higher temperature.Samples of other dimensions and using other casting procedures may be agreed between the manufacturer and the purchaser for the purpose of representing the properties of particular castings.BS ISO 185 pdf download.