This European Standard defines the grades and the corresponding requirements for spheroidal graphite cast irons. This European Standard specifies 2 groups of spheroidal graphite cast iron grades by a classification based on mechanical properties measured on machined test pieces prepared from cast samples. The first group deals mainly with ferritic to pearlitic grades. The second group deals with solid-solution strengthened ferritic grades. This European Standard does not cover technical delivery conditions for iron castings (see EN 1559 1 [3] and EN 1559 3 [4]). This European Standard does not cover: – ausferritic spheroidal graphite cast irons which are specified in EN 1564 [7]; – low alloyed ferritic spheroidal graphite cast irons which are specified in EN 16124 [8]; – continuous cast iron bars which are specified in EN 16482 [7]; – austenitic cast irons which are specified in EN 13835 [8]; – spheroidal graphite cast irons used for pipes, fittings and their joints which are the subject of EN 545 [11], EN 598 [12] and EN 969 [13]; – the grades of spheroidal graphite cast irons as specified in EN 545 which are used for products such as industrial valves, non-industrial manually operated shut-off valves and flanges and their joints, which are the subject of the applicable European product standards.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4 Designation 5 Order information 6 Manufacture <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 7 Requirements 7.1 General 7.2 Ferritic to pearlitic spheroidal graphite cast irons 7.2.1 Test pieces machined from cast samples 7.2.1.1 Tensile properties <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 7.2.1.2 Impact energy 7.2.2 Test pieces machined from samples cut from a casting <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 7.2.3 Hardness 7.2.4 Graphite morphology 7.2.5 Matrix microstructure 7.3 Solid solution strengthened ferritic spheroidal graphite cast irons 7.3.1 Test pieces machined from cast samples <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7.3.2 Test pieces machined from samples cut from a casting 7.3.3 Hardness 7.3.4 Graphite morphology 7.3.5 Matrix microstructure 8 Sampling 8.1 General <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 8.2 Cast samples 8.2.1 Size of cast sample 8.2.2 Frequency and number of tests 8.2.3 Separately cast samples 8.2.4 Side-by-side cast samples <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 8.2.5 Cast-on samples 8.2.6 Test pieces machined from cast samples 8.3 Samples cut from a casting <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 9 Test methods 9.1 Tensile test <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 9.2 Impact test <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 9.3 Hardness test 9.4 Graphite morphology examination 10 Retests 10.1 Need for retests <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 10.2 Test validity 10.3 Non-conforming test results 10.4 Heat treatment of samples and castings 11 Inspection documentation <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Annex A (informative)Additional information on solid solution strengthened ferritic spheroidal graphite cast irons A.1 General A.2 Material constitution A.2.1 Chemical composition A.2.2 Matrix microstructure A.2.3 Graphite morphology <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | A.3 Supplementary information A.3.1 Mechanical properties A.3.1.1 0,2 % proof strength A.3.1.2 Other mechanical and physical properties <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | A.3.2 Machinability <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Annex B (informative)Guidance values for mechanical properties determined on test pieces machined from samples cut from the castings <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Annex C (informative)Guidance values for hardness C.1 General C.2 Sampling <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | C.3 Test method C.4 Number and frequency of hardness tests <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex D (informative)Nodularity <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Annex E (informative)Additional information on mechanical and physical properties <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Annex F (normative)Sectioning procedure for cast samples <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Annex G (informative)Comparison of spheroidal graphite cast iron material designations according to EN 1560 [1] and ISO\/TR 15931 [15] <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Annex H (informative)Fracture mechanical approach to spheroidal graphite cast irons H.1 General H.2 Fracture mechanics concept H.3 Determination of fracture mechanical properties <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | H.4 Influences on fracture mechanical properties H.5 Publications H.5.1 Testing H.5.2 Component assessment <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | H.6 Literature <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Annex I (informative)Significant technical changesbetween this European Standard and the 2011 edition <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Annex J (informative)Significant technical changes between the 1997 edition and the 2011 edition <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Annex ZA (informative)Relationship between this European Standard and the essential safety requirements of Annex I of the Directive 2014\/68\/EU aimed to be covered <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Founding. Spheroidal graphite cast irons<\/b><\/p>\n |