BS ISO 185:2020
$167.15
Grey cast irons. Classification
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 36 |
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:
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the tensile strength of cast samples;
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if agreed by the manufacturer and the purchaser, the tensile strength of samples cut from a casting;
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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.
General information on the engineering properties of grey cast irons is provided in ISO/TR 10809-1 .
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Designation 5 Order information 6 Manufacture |
| 11 | 7 Requirements 7.1 Mechanical properties 7.2 Tensile properties 7.2.1 General 7.2.2 Test pieces machined from cast samples 7.2.3 Test pieces cut from a casting |
| 13 | 7.3 Hardness properties |
| 15 | 7.4 Graphite structure 8 Sampling 8.1 General 8.2 Types of samples 8.3 Samples for tensile test 8.3.1 Size of cast samples |
| 16 | 8.3.2 Frequency and number of test samples 8.3.3 Separately cast samples 8.3.4 Side-by-side cast samples |
| 17 | 8.3.5 Cast-on samples |
| 19 | 8.3.6 Samples cut from a casting |
| 20 | 8.4 Samples for hardness test 9 Test methods 9.1 Tensile test |
| 22 | 9.2 Brinell hardness test 9.3 Graphite structure 9.4 Alternative test procedures 10 Retests 10.1 Need for retests 10.2 Test validity |
| 23 | 10.3 Nonconforming test results 10.4 Heat treatment of samples and castings |
| 24 | Annex A (informative) Information on mechanical and physical properties in addition to that given in Tables 1 and 2 |
| 26 | Annex B (informative) Additional information on the relationship between hardness and tensile strength of grey cast irons |
| 29 | Annex C (informative) Additional information on the relationship between tensile strength, hardness and wall thickness of grey iron castings |
| 33 | Annex D (informative) Cross-references of ISO 185 grade designations to other standard grades of grey cast irons |
| 35 | Bibliography |
