Foreword

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This document was prepared by Technical Committee ISO/TC 25, Cast irons and pig irons.

This third edition cancels and replaces the second edition (ISO 185:2005), which has been technically revised. The main changes compared with the previous edition are as follows:

— terms and definitions have been added for “separately cast sample”, “side-by-side cast sample” and “cast-on sample”;
— Table 1 has been revised to delete the column of anticipated minimum tensile strength values in castings; this information has been moved to Annex C;
— Table 1 has been revised to include side-by-side cast samples with the same tensile strength requirements as separately cast samples;
— Table 1 has been revised to add a maximum tensile strength for each grade for separately cast samples and side-by-side cast samples;
— Table 1 has been revised to revise minimum tensile strength values for some selected grades and relevant wall thicknesses of cast-on samples;
— Annex C has been revised to add Table C.1, which shows anticipated values for tensile strength in grey iron castings based on relevant wall thickness; some values are slightly changed from those in Table 1 of the previous edition;
— information in Annex D has been updated to include corresponding hardness grades from GB/T 9439;
— additional changes have been made for clarity of expression and improved consistency with ISO standards for other types of cast irons.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

BS ISO 185:2019

Grey cast irons. Classification

Published:

31 Aug 2019

Withdrawn:

1 Jun 2020