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BS EN 1561:2023 – TC:2024 Edition

BS EN 1561:2023 – TC:2024 Edition

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Tracked Changes. Founding. Grey cast irons

Published By Publication Date Number of Pages
BSI 2024 98
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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
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

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BS EN 1561:2023 - TC
$246.62