CEN/TC 190/WG 7 - Spheroidal graphite, silicon molybdenum and austempered ductile iron

This document specifies the grades of grey cast iron and spheroidal graphite cast iron bars, which have been produced by the continuous casting process.
This document specifies the characterizing properties of grey cast iron bars by either:
a)   the tensile strength measured on machined test pieces prepared from samples cut from the bars, or
b)   the hardness measured on the bars.
If agreed by the manufacturer and the purchaser, the combination of both tensile strength from option a) and hardness from option b) can be specified.
This document specifies the characterizing properties of spheroidal graphite cast iron bars by the tensile strength measured on machined test pieces prepared from samples cut from the bars.
This document specifies 4 grades of grey cast iron and 14 grades of spheroidal graphite cast iron by a classification based on tensile strength and 4 grades of grey cast iron by a classification based on Brinell hardness.
This document specifies also the straightness of the bars.
This document does not cover technical delivery conditions for iron castings (see EN 1559 1 and EN 1559 3).

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.

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 metal 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].

This European Standard defines the grades and the corresponding requirements for ausferritic spheroidal graphite cast irons.
This European Standard specifies five grades of ausferritic spheroidal graphite cast iron by a classification based on mechanical properties measured on machined test pieces prepared from cast samples.
This European Standard also specifies two grades by a classification as a function of hardness.
This European Standard does not cover technical delivery conditions for iron castings, see EN 1559-1 [4] and EN 1559-3 [5].
NOTE   Grades given in Annex A are not intended for pressure equipment applications.

This European Standard defines the grades of grey cast iron and spheroidal graphite cast iron bars, which have been produced by the continuous casting process.
This European Standard specifies the characterizing properties of grey cast iron bars by either:
a)   the tensile strength measured on machined test pieces prepared from samples cut from the bars, or
b)   the hardness measured on the bars.
If agreed by the manufacturer and the purchaser, the combination of both tensile strength from option a) and hardness from option b) may be specified.
This European Standard specifies the characterizing properties of spheroidal graphite cast iron bars by the tensile strength measured on machined test pieces prepared from samples cut from the bars.
This European Standard specifies 4 grades of grey cast iron and 14 grades of spheroidal graphite cast iron by a classification based on tensile strength and 4 grades of grey cast iron by a classification based on Brinell hardness.
This European Standard specifies also the straightness of the bars.
This European Standard does not cover technical delivery conditions for iron castings (see EN 1559 1 [1] and EN 1559 3 [2]).

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 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 all aspects of:
-   ausferritic spheroidal graphite cast irons which are specified in EN 1564 [5];
-   low alloyed ferritic spheroidal graphite cast irons which are specified in prEN 16124 [6];
-   austenitic cast irons which are specified in EN 13835 [7];
-   spheroidal graphite cast irons used for pipes, fittings and their joints which are the subject of EN 545 [8], EN 598 [9] and EN 969 [10];
-   the grades of spheroidal graphite cast iron 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.

This European Standard defines the grades and the corresponding requirements of spheroidal graphite cast iron. This European Standard specifies a classification based on mechanical properties measured on machined test pieces prepared from: - separately cast test samples; - cast-on samples; - samples cut from arom a casting. This European Standard also specifies a classification as a function of hardness. This standard does not apply to spheroidal graphite cast iron used for pipes, fitting and accessories which are the subject of EN 545, EN 598, EN 969 and ISO 2531.

This European Standard defines the grades and the corresponding requirements of spheroidal graphite cast iron. This European Standard specifies a classification based on mechanical properties measured on machined test pieces prepared from: - separately cast test samples; - cast-on samples; - samples cut from arom a casting. This European Standard also specifies a classification as a function of hardness. This standard does not apply to spheroidal graphite cast iron used for pipes, fitting and accessories which are the subject of EN 545, EN 598, EN 969 and ISO 2531.

This European Standard defines the grades and the corresponding requirements of spheroidal graphite cast iron. This European Standard specifies a classification based on mechanical properties measured on machined test pieces prepared from: - separately cast test samples; - cast-on samples; - samples cut from arom a casting. This European Standard also specifies a classification as a function of hardness. This standard does not apply to spheroidal graphite cast iron used for pipes, fitting and accessories which are the subject of EN 545, EN 598, EN 969 and ISO 2531.

This European Standard defines the grades and the corresponding properties of austempered ductile cast iron. This European standard specifies a classificationbased on mechanical properties measured on machined test pieces prepared form : - separately cast samples; - samples cut from casting; - cast-on samples.

This European Standard defines the grades and the corresponding properties of austempered ductile cast iron. This European standard specifies a classification based on mechanical properties measured on machined test pieces prepared form : - separately cast samples; - samples cut from casting; - cast-on samples.