BS EN 1561:2023 – TC:2024 Edition
$246.62
Tracked Changes. Founding. Grey cast irons
Published By | Publication Date | Number of Pages |
BSI | 2024 | 98 |
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 either 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) 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].
PDF Catalog
PDF Pages | PDF Title |
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54 | undefined |
61 | 1 Scope 2 Normative references |
62 | 3 Terms and definitions |
63 | 4 Designation 5 Order information |
64 | 6 Manufacture 7 Requirements 7.1 Mechanical properties 7.2 Tensile properties 7.2.1 General 7.2.2 Test pieces machined from cast samples |
65 | 7.2.3 Test pieces machined from samples cut from a casting |
69 | 7.3 Hardness properties |
70 | 7.4 Graphite structure 8 Sampling 8.1 General |
71 | 8.2 Samples for tensile test 8.2.1 Size of cast samples 8.2.2 Frequency and number of tests |
72 | 8.2.3 Separately cast samples |
73 | 8.2.4 Side-by-side cast samples |
74 | 8.2.5 Cast-on samples |
76 | 8.2.6 Samples cut from a casting |
77 | 8.3 Samples for hardness test 9 Test methods 9.1 Tensile test |
79 | 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 10.3 Nonconforming test results |
80 | 10.4 Heat treatment of samples and castings 11 Inspection documentation |
81 | Annex A (informative)Additional information on mechanical and physical properties |
84 | Annex B (informative)Comparison of grey cast iron material designations according to EN 1560 and ISO/TR 15931 [7] |
85 | Annex C (informative)Additional information on the relationship between hardness and tensile strength C.1 General C.2 Relative hardness |
87 | Annex D (informative)Additional information on the relationship between tensile strength, hardness and wall thickness of grey iron castings |
90 | Annex E (informative)Guidance values for tensile strength determined on samples cut from a casting |
92 | Annex F (informative)Wedge penetration test F.1 General F.2 Principle F.3 Symbols |
93 | F.4 Testing apparatus F.4.1 General F.4.2 Accuracy of testing apparatus F.4.3 Wedges F.5 Test piece |
94 | F.6 Procedure F.7 Evaluation F.8 Correlation of wedge penetration strength with tensile strength |
95 | Annex G (informative)Significant technical changes between this document and the previous edition |