EN 16124:2011 – Founding – Low-alloyed ferritic spheroidal graphite cast irons for elevated temperature applications

1 Scope
This European Standard defines the grades and the corresponding requirements for low-alloyed ferritic spheroidal graphite cast irons for elevated temperature applications.
These requirements are specified in terms of
chemical composition: as given for each of the grades,
graphite form and matrix structure: spheroidal graphite in a predominantly ferritic matrix,
mechanical properties measured on machined test pieces prepared from cast samples.
This European Standard does not cover technical delivery conditions for iron castings, see EN 1559-1 [1] and EN 1559-3 [2].
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 10204, Metallic products — Types of inspection documents
EN ISO 945-1:2008, Microstructure of cast irons — Part 1: Graphite classification by visual analysis (ISO 945-1:2008)
EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1)
EN ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature (ISO 6892-1)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
low alloyed ferritic spheroidal graphite cast iron
cast iron material with carbon mainly present in the form of spheroidal graphite particles, alloyed with silicon in order to produce a predominantly ferritic matrix and alloyed with molybdenum to improve mechanical properties at elevated temperatures
3.2
graphite spheroidizing treatment
operation that brings the liquid iron into contact with a substance to produce graphite in the predominantly spheroidal (nodular) form during solidification
NOTE This operation is often followed by a second one called inoculation.
3.3
cast sample
quantity of material cast to represent the cast material, including separately cast sample, side by side cast sample and cast-on sample
3.4
separately cast sample
sample cast in a separate sand mould under representative manufacturing conditions and material grade
3.5
side-by-side cast sample
sample cast in the mould alongside the casting, with a joint running system
3.6
cast-on sample
sample attached directly to the casting
3.7
relevant wall thickness
wall thickness representative of the casting, defined for the determination of the size of the cast samples to which the mechanical properties apply
4 Designation
The material shall be designated either by symbol or by number as given in Table 1.
NOTE The designation system is in accordance with EN 1560 [3].
In the case of samples cut from the casting, the letter C is added at the end of the designation by symbol.
5 Order information
The following information shall be supplied by the purchaser:
a) the number of this European Standard;
b) the designation of the material;
c) the relevant wall thickness of the casting;
d) any special requirements.
All requirements shall be agreed between the manufacturer and the purchaser by the time of acceptance of the order, e.g. technical delivery conditions according to EN 1559-1 and EN 1559-3.
EN 16124:2011 – Founding – Low-alloyed ferritic spheroidal graphite cast irons for elevated temperature applications