SIST EN 13835:2003
(Main)Founding - Austenitic cast irons
Founding - Austenitic cast irons
This European Standard specifies the grades and corresponding requirements of austenitic cast irons. These requirements are specified in terms of: - graphite form and metal structure: either flake or spheroidal graphite in an austenitic matrix; - chemical composition: as given for each of the grades; - mechanical properties: obtained from separately cast samples.
Gießereiwesen - Austenitische Gusseisen
Diese Europäische Norm legt die Sorten und die entsprechenden Anforderungen für austenitische Gußeisen fest. Die folgenden Anforderungen sind festgelegt: - Graphitform und Metallgefüge: Lamellen- oder Kugelgraphit in einem austenitischen Grundgefüge; - chemische Zusammensetzung: entsprechend den Angaben für die jeweilige Sorte; - mechanische Eigenschaften: bestimmt an getrennt gegossenen Probestücken.
Fonderie - Fonte austénitique
La présente norme européenne spécifie les nuances et les exigences correspondantes des fontes austénitiques. Ces exigences sont spécifiées en termes de: - forme de graphite lamellaire ou sphéroidal dans une matrice austénitique; - composition chimique: telle qu'indiquée pour chacune des nuances; - caractéristiques mécaniques: obtenues a partir d'échantillons coulés a part.
Livarstvo - Avstenitna siva litina
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13835:2003
01-april-2003
Livarstvo - Avstenitna siva litina
Founding - Austenitic cast irons
Gießereiwesen - Austenitische Gusseisen
Fonderie - Fonte austénitique
Ta slovenski standard je istoveten z: EN 13835:2002
ICS:
77.080.10 Železo Irons
SIST EN 13835:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 13835
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2002
ICS 77.080.10
English version
Founding - Austenitic cast irons
Fonderie - Fonte austénitique Gießereiwesen - Austenitische Gusseisen
This European Standard was approved by CEN on 19 August 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13835:2002 E
worldwide for CEN national Members.
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EN 13835:2002 (E)
Contents
page
Foreword.3
Introduction .4
1 Scope .4
2 Normative references .4
3 Terms and definitions.4
4 Designation.5
5 Order information .5
6 Manufacture.5
7 Requirements .5
7.1 Chemical composition.5
7.2 Mechanical properties .5
8 Sampling.6
8.1 General.6
8.2 Frequency and number of tests .6
8.3 Samples .6
9 Testing .6
9.1 Chemical analysis.6
9.2 Tensile test .6
9.3 Impact test .7
9.4 Other properties.7
10 Retests .7
Annex A (informative) Properties and applications of the austenitic cast iron grades .16
Annex B (informative) Heat treatment .17
B.1 Stress relief.17
B.2 Heat treatment for high temperature stability.17
Annex C (informative) Additional mechanical and physical properties .18
Annex D (informative) Effect of alloying elements.23
Annex E (informative) Testing.24
Annex F (informative) Cross reference to other standards .25
Figures
Figure 1 — Separately cast samples (option 1). 12
Figure 2 — Separately cast samples (option 2). 13
Figure 3 — Separately cast samples (option 3). 14
Figure 4 — Tensile test piece . 15
Figure 5 — Charpy V-notched impact test piece. 15
Tables
Table 1 — Chemical composition of austenitic cast irons — Engineering grades. 8
Table 2 — Chemical composition of austenitic cast irons — Special Purpose grades . 9
Table 3 — Mechanical properties of austenitic cast irons — Engineering grades . 10
Table 4 — Mechanical properties of austenitic cast irons — Special Purpose grades. 11
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EN 13835:2002 (E)
Foreword
This document (EN 13835:2002) has been prepared by Technical Committee CEN/TC 190 “Founding Technology”,
the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by May 2003, and conflicting national standards shall be withdrawn at the latest by
May 2003.
Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 2.40 “Wear resistant
and abrasion resistant cast iron” to prepare the following standard:
EN 13835, Founding — Austenitic cast irons.
Annexes A, B, C, D, E and F are informative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
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EN 13835:2002 (E)
Introduction
This European Standard deals with the classification of a range of cast irons principally used for their heat and cor-
rosion resistance properties. These properties are obtainable from the Engineering grades in this standard. The
Special Purpose grades also exhibit heat and corrosion resistance properties, but are used principally for their
magnetic properties, or very low expansion characteristics.
The austenitic cast irons are a range of high-alloyed materials with an austenitic matrix, containing nickel, man-
ganese and sometimes copper and chromium. Carbon is present either as graphite flakes or as spheroids. The
spheroidal graphite grades have superior mechanical properties.
The properties of the austenitic cast irons depend upon them having the appropriate structure and mechanical pro-
perties for the application. These properties are dependent upon the control of metal composition within the
specified grades and the metal processing route.
Typical applications for the various grades are given in annex A.
1 Scope
This European Standard specifies the grades and corresponding requirements for austenitic cast irons. These
requirements are specified in terms of:
graphite form and metal structure: either flake or spheroidal graphite in an austenitic matrix;
chemical composition: as given for each of the grades;
mechanical properties: obtained from separately cast samples.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 1559-1, Founding — Technical conditions of delivery — Part 1: General.
EN 1559-3, Founding — Technical conditions of delivery — Part 3: Additional requirements for iron castings.
EN 10002-1, Metallic materials — Tensile testing — Part 1: Method of test at ambient temperature.
EN 10045-1, Metallic materials — Charpy impact test — Part 1: Test method.
3 Terms and definitions
For the purposes of this European Standard, the following term and definition apply.
3.1
austenitic cast iron
cast material with an austenitic matrix which is iron and carbon based and alloyed with nickel and manganese,
copper and/or chromium in order to stabilize the austenitic structure at room temperature. The graphite can be
present in flake or spheroidal form
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EN 13835:2002 (E)
4 Designation
The material shall be designated either by symbol or by number as given in Tables 1 to 4.
5 Order information
The following information shall be supplied by the purchaser:
a) the number of this European Standard (EN 13835);
b) the designation of the material;
c) any special requirements which have to be agreed by the time of acceptance of the order in accordance with
EN 1559-1 and EN 1559-3.
6 Manufacture
Unless otherwise specified by the purchaser, the method of manufacture of austenitic cast irons shall be left to the
discretion of the manufacturer. The manufacturer shall ensure that the requirements defined in this standard are
met for the material grade specified in the order.
Any agreement between the manufacturer and the purchaser shall be made by the time of acceptance of the order.
NOTE For certain applications heat treatment of austenitic cast irons is beneficial, but should only be specified where
service conditions demand such treatment. The heat treatment processes employed are stress relieving and high temperature
stabilising treatments. Details of these treatments are given in annex B.
7 Requirements
7.1 Chemical composition
The chemical composition of austenitic cast iron grades shall be in accordance with Table 1 for the Engineering
grades and Table 2 for the Special Purpose grades. Spheroidal graphite grades are produced either by magnesium
treatment or by treatment with another suitable nodulariser. Unless otherwise specified, other elements may be
present at the discretion of the manufacturer provided that they do not alter the structure or adversely affect the
properties. If the presence of any element specified in Tables 1 or 2 is required to be outside the limits indicated, or
if any other elements are required, their contents shall be agreed between the manufacturer and the purchaser and
specified in the order.
7.2 Mechanical properties
The mechanical properties of the grades of austenitic cast irons obtained from separately cast samples shall be in
accordance with Table 3 for the Engineering grades and Table 4 for the Special Purpose grades.
Other requirements, such as the mechanical properties to be met on cast-on samples or at specified locations on
the castings, shall be agreed between the manufacturer and the purchaser and specified in the order. In such
cases the position of the cast-on sample or the specified location on the casting shall be agreed between the
manufacturer and the purchaser and specified in the order.
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EN 13835:2002 (E)
8 Sampling
8.1 General
Samples shall be provided from the same melt as that used to produce the castings which they represent.
8.2 Frequency and number of tests
Samples, representative of the material, shall be produced at a frequency in accordance with the in-process quality
assurance procedure adopted by the manufacturer.
In the absence of either an in-process quality assurance procedure or any agreement between the manufacturer
and the purchaser, a minimum of one sample shall be produced to confirm the material at a frequency to be agreed
between the manufacturer and the purchaser by the time of acceptance of the order.
When impact tests are agreed by the time of acceptance of the order, samples shall be produced at a frequency to
be agreed between the manufacturer and the purchaser.
8.3 Samples
Unless otherwise agreed by the time of acceptance of the order, samples for mechanical testing shall be cast
separately in sand moulds from the same ladle as that used to pour the casting(s).
Separately cast samples shall meet the requirements of either Figures 1, 2 or 3.
Separately cast samples shall not be removed from the mould at a temperature higher than that of the castings. If
heat treatment is necessary, then the samples shall be heat treated with the castings which they represent.
The samples for chemical analysis shall be cast in a manner which ensures that the accurate chemical composition
can be determined.
9 Testing
9.1 Chemical analysis
The methods used to determine the chemical composition of the material shall be in accordance with recognised
standards. Any requirement for traceability shall be agreed between the manufacturer and the purchaser by the
time of acceptance of the order.
9.2 Tensile test
The tensile test shall be carried out in accordance with EN 10002-1.
The tensile test piece (see Figure 4) shall be machined from one of the samples shown in Figures 1, and 2
(hatched parts) or 3. Unless otherwise agreed, the selection of the sample type and option shall be left to the
discretion of the manufacturer.
If, for technical reasons, it is necessary to use a tensile test piece having a different diameter, its original gauge
length shall conform to the following formula:
L = 5,65 · S
o o
where
L is the original gauge length;
o
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EN 13835:2002 (E)
S is the original cross-sectional area of the test piece.
o
9.3 Impact test
The impact test shall be carried out on three Charpy V-notched impact test pieces (see Figure 5) in accordance
with EN 10045-1 using test equipment with available energy compatible with the properties of the austenitic cast
iron being tested.
9.4 Other properties
Annexes C, D and E give information on other properties. Annex F gives cross references to other standards.
10 Retests
If any result of tests as given in 7.2 are in non-conformance, then two further test pieces shall be tested. The
samples required to produce these two further test pieces shall have come from the same melt and shall have been
heat treated in the same manner as the castings that they represent.
If the test result from either of the two further test pieces is in non-conformance, then the castings that they repre-
sent shall be deemed to be in non-conformance.
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·
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EN 13835:2002 (E)
Table 1 — Chemical composition of austenitic cast irons — Engineering grades
Material designation Chemical composition in % (mass fraction)
Graphite
form
Symbol Number C Si Mn Ni Cr P Cu
Flake EN-GJLA-XNiCuCr15-6-2 EN-JL3011 max. 3,0 1,0 to 2,8 0,5 to 1,5 13,5 to 17,5 1,0 to 3,5 max. 0,25 5,5 to 7,5
EN-GJSA-XNiCr20-2 EN-JS3011 max. 3,0 1,5 to 3,0 0,5 to 1,5 18,0 to 22,0 1,0 to 3,5 max. 0,08 max. 0,50
EN-GJSA-XNiMn23-4 EN-JS3021 max. 2,6 1,5 to 2,5 4,0 to 4,5 22,0 to 24,0 max. 0,2 max. 0,08 max. 0,50
a a
EN-GJSA-XNiCrNb20-2 EN-JS3031 max. 3,0 1,5 to 2,4 0,5 to 1,5 18,0 to 22,0 1,0 to 3,5 max. 0,08 max. 0,50
Spheroidal
EN-GJSA-XNi22 EN-JS3041 max. 3,0 1,0 to 3,0 1,5 to 2,5 21,0 to 24,0 max. 0,5 max. 0,08 max. 0,50
EN-GJSA-XNi35 EN-JS3051 max. 2,4 1,5 to 3,0 0,5 to 1,5 34,0 to 36,0 max. 0,2 max. 0,08 max. 0,50
EN-GJSA-XNiSiCr35-5-2 EN-JS3061 max. 2,0 4,0 to 6,0 0,5 to 1,5 34,0 to 36,0 1,5 to 2,5 max. 0,08 max. 0,50
a
Good weldability of this material with: % Nb [0,353 0,032 (% Si + 64 % Mg)]. The normal range of Nb is 0,12 % to 0,20 %.
8
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EN 13835:2002 (E)
Table 2 — Chemical composition of austenitic cast irons — Special Purpose grades
Material designation Chemical composition in % (mass fraction)
Graphite
form
Symbol Number C Si Mn Ni Cr P Cu
Flake EN-GJLA-XNiMn13-7 EN-JL3021 max. 3,0 1,5 to 3,0 6,0 to 7,0 12,0 to 14,0 max. 0,2 max. 0,25 max. 0,5
EN-GJSA-XNiMn13-7 EN-JS3071 max. 3,0 2,0 to 3,0 6,0 to 7,0 12,0 to 14,0 max. 0,2 max. 0,08 max. 0,5
EN-GJSA-XNiCr30-3 EN-JS3081 max. 2,6 1,5 to 3,0 0,5 to 1,5 28,0 to 32,0 2,5 to 3,5 max. 0,08 max. 0,5
Spheroidal
EN-GJSA-XNiSiCr30-5-5 EN-JS3091 max. 2,6 5,0 to 6,0 0,5 to 1,5 28,0 to 32,0 4,5 to 5,5 max. 0,08 max. 0,5
EN-GJSA-XN
...
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