What is this standard about?
This European Standard defines the grades and corresponding requirements for spheroidal graphite cast irons.
Who is this standard for?
- Manufacturers of automotive parts
- Cast iron manufacturers
- Power generation market
- Oil and gas industry
Users will include:
- Design engineers
- Importers
- Purchasing staff
- Quality engineers and managers
- Melt quality assessors
Why should you use this standard?
It specifies two groups of spheroidal graphite cast iron grades using 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.
NOTE: This European Standard does not cover technical delivery conditions for iron castings (see BS EN 1559-1 [3] and BS EN 1559-3 [4]). It does not cover:
— ausferritic spheroidal graphite cast irons which are specified in BS EN 1564 [7]
— low alloyed ferritic spheroidal graphite cast irons which are specified in BS EN 16124 [8]
— continuous cast iron bars which are specified in BS EN 16482 [7]
— austenitic cast irons which are specified in BS EN 13835 [8]
— spheroidal graphite cast irons used for pipes, fittings and their joints which are the subject of
BS EN 545 [11], BS EN 598 [12] and BS EN 969 [13]
— the grades of spheroidal graphite cast irons as specified in BS 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
What’s changed since the last update?
This revision to the 2011 standard introduces a number significant technical changes which include the following modifications:
- 8.2.6 (Test pieces machined from cast samples) and Figure 5 (Tensile test piece) have been modified
- Annex A (Additional information on solid solution strengthened ferritic spheroidal graphite cast irons) and Table A.1 (Guidance values for silicon content) have been modified.
- Annex E – (Guidance values for fatigue) has been added
- Annex F (Sectioning procedure for cast samples) was the previous Annex G
- Annex G (was comparison of spheroidal graphite cast iron material designations according to EN 1560 [1] and ISO/TR 15931 [15]) was as the previous Annex H
- Annex H (Fracture mechanical approach to spheroidal graphite cast irons) was the previous Annex F and is entirely reworded
- Former Annex I - “Un-notched impact test” has been deleted