EN 1559-3:2026

• Abstract:

  This document specifies the additional technical delivery conditions for castings made from all cast iron materials.; This document applies to iron castings produced in sand or permanent moulds or by centrifugal casting, continuous casting or investment casting.

• Status: Not Published
• Publication Date: 20-Oct-2026
• ICS: 77.140.80 - Iron and steel castings
• Technical Committee: CEN/TC 190 - Foundry technology
• Drafting Committee: CEN/TC 190/WG 1 - Technical conditions of delivery and cast iron designation
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Start Date: 14-Sep-2026
• Due Date: 29-Jun-2027
• Completion Date: 14-Sep-2026
• Ref Project: kSIST FprEN 1559-3:2026 - Founding - Technical conditions of delivery - Part 3: Additional requirements for iron castings

• Revises: EN 1559-3:2011 - Founding - Technical conditions of delivery - Part 3: Additional requirements for iron castings
• Effective Date: 02-Feb-2023

Overview

EN 1559-3:2026: Founding - Technical conditions of delivery - Part 3: Additional requirements for iron castings specifies supplementary technical delivery conditions for iron castings of all types. Developed by CEN, this European Standard applies to iron castings produced via a range of molding and casting methods, including sand or permanent molds, centrifugal casting, continuous casting, and investment casting. It serves as a critical complement to EN 1559-1, enhancing clarity and consistency for suppliers and purchasers in the iron casting industry.

This standard supports the preparation of precise contractual agreements, ensuring both manufacturers and purchasers align on technical details and quality expectations for all cast iron materials.

Key Topics

• Scope and Applicability
  • Covers all cast iron materials, including grey, malleable, spheroidal graphite, and more.
  • Applies to various casting processes: sand casting, permanent mold, centrifugal, continuous, and investment casting.
• Additional Technical Requirements
  • Specifies mandatory and optional information to provide with orders, including wall thickness, heat treatment, and special post-process intentions (e.g., enameling, galvanizing).
  • Details on manufacturing processes, welding operations, and handling of finishing and production welding in accordance with current welding standards (e.g., EN 287-6).
• Inspection and Testing
  • Outlines requirements for non-destructive testing (NDT) methods appropriate for iron castings, such as:
    • Liquid penetrant testing
    • Magnetic particle testing
    • Ultrasonic testing
    • Radiographic testing
  • Provides guidelines for the specification of acceptance criteria for both internal and external casting conditions, including discontinuities and surface roughness.
• Surface Condition and Acceptance Criteria
  • Provides clear criteria for visual inspection and defines acceptance levels for surface roughness and irregularities, helping ensure iron castings meet specified quality levels.
  • Emphasizes the importance of marking critical zones on drawings and specifying acceptance criteria as part of order documentation.
• Material Designation and Quality Assurance
  • Requires cast iron materials to be designated according to EN 1560.
  • Mass, condition, and additional microstructural or property requirements must be agreed on at the order stage.

Applications

EN 1559-3:2026 is essential for manufacturers, purchasers, and quality managers involved in the supply and production of iron castings. Practical uses include:

• Manufacturing and Supply Contracts
  • Standardizing requirements in purchase orders and contracts for iron castings, minimizing miscommunication.
• Quality Control
  • Implementing standardized testing (NDT) and acceptance criteria across different types of cast iron castings to support consistent quality.
• Design and Engineering
  • Facilitating the proper specification of casting processes, material grades, and post-processing based on end-use requirements (e.g., mechanical properties, surface finish).
• Sector Relevance
  • Widely applicable across automotive, heavy machinery, construction, and energy sectors where iron castings are critical components.

Related Standards

EN 1559-3:2026 is part of a broader suite of European Standards on technical delivery conditions for castings:

• EN 1559-1: General technical conditions of delivery
• EN 1559-2: Additional requirements for steel castings
• EN 1559-4: Additional requirements for aluminium alloy castings
• EN 1559-5: Additional requirements for magnesium alloy castings
• EN 1559-6: Additional requirements for zinc alloy castings

Other relevant standards for material grades and testing methods include:

• EN 1560 (Cast iron designation)
• EN 1561, EN 1562, EN 1563, EN 1564 (Various types of cast irons)
• EN 1369, EN 1370, EN 1371-1 (Non-destructive testing)
• EN 1011-8, EN ISO 3452-1, EN ISO 9934-1 (Welding and NDT standards)

By adhering to EN 1559-3:2026 and its companion standards, organizations ensure that their iron casting processes and products meet the high expectations for quality, traceability, and reliability within the European market and beyond.

SLOVENSKI STANDARD
oSIST prEN 1559-3:2025
01-december-2025
Livarstvo - Tehnični dobavni pogoji - 3. del: Dodatne zahteve za litoželezne ulitke
Founding - Technical conditions of delivery - Part 3: Additional requirements for iron
castings
Gießereiwesen - Technische Lieferbedingungen - Teil 3: Zusätzliche Anforderungen an
Eisengussstücke
Fonderie - Conditions techniques de fourniture - Partie 3: Spécifications
complémentaires pour les pièces moulées en fonte
Ta slovenski standard je istoveten z: prEN 1559-3
ICS:
77.140.80 Železni in jekleni ulitki Iron and steel castings
oSIST prEN 1559-3:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 1559-3:2025
oSIST prEN 1559-3:2025
DRAFT
EUROPEAN STANDARD
prEN 1559-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2025
ICS 77.140.80 Will supersede EN 1559-3:2011
English Version
Founding - Technical conditions of delivery - Part 3:
Additional requirements for iron castings
Fonderie - Conditions techniques de fourniture - Partie Gießereiwesen - Technische Lieferbedingungen - Teil
3: Spécifications complémentaires pour les pièces 3: Zusätzliche Anforderungen an Eisengussstücke
moulées en fonte
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 190.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1559-3:2025 E
worldwide for CEN national Members.

oSIST prEN 1559-3:2025
prEN 1559-3:2025 (E)
Contents Page
European foreword . 3
Introduction . 4
4.1 Mandatory information . 6
4.2 Optional information . 6
4.3 Drawings, patterns and tools . 6
4.4 Information on the mass . 6
4.5 Preliminary sample . 6
4.6 Initial sample . 6
6.1 Manufacturing process . 7
6.2 Welding operations . 7
7.1 General. 7
7.2 Material . 7
7.3 Casting . 7
8.1 General. 9
8.2 Type of inspection documents and type of inspection . 9
8.3 Test unit . 9
8.4 Samples . 9
8.5 Test . 9
8.6 Invalidation of tests . 9
8.7 Retests . 10
8.8 Sorting and reprocessing . 10
Annex A (informative) Guidelines for the specification of acceptance criteria for the outer
and inner conditions (non-destructive testing) . 11
A.1 General. 11
A.2 Casting discontinuities . 11
A.3 General requirements . 11
A.4 Discontinuity classes . 11
A.5 Machined surfaces and bores . 12
A.6 Marked zones . 12
Annex B (informative) Guidelines for the specification of acceptance criteria for surface
condition (visual check) . 13
B.1 General. 13
B.2 Surface roughness . 13
B.3 Visual examination of surface irregularities . 14
Annex C (informative) Significant technical changes between this document and the
previous edition . 15
Bibliography . 16
oSIST prEN 1559-3:2025
prEN 1559-3:2025 (E)
European foreword
This document (prEN 1559-3:2025) has been prepared by Technical Committee CEN/TC 190 “Foundry
technology”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1559-3:2011.
The significant technical changes with respect to EN 1559-3:2011 are given in Annex C, Table C.1.
This document is one of a series of European Standards for technical delivery conditions for castings. The
other standards in this series are:
EN 1559-1, Founding - Technical conditions of delivery - Part 1: General
EN 1559-2, Founding - Technical conditions of delivery - Part 2: Additional requirements for steel castings
EN 1559-4, Founding - Technical conditions of delivery - Part 4: Additional requirements for aluminium
alloy castings
EN 1559-5, Founding - Technical conditions of delivery - Part 5: Additional requirements for magnesium
alloy castings
EN 1559-6, Founding - Technical conditions of delivery - Part 6: Additional requirements for zinc alloy
castings
oSIST prEN 1559-3:2025
prEN 1559-3:2025 (E)
Introduction
CEN/TC 190 “Foundry Technology” has prepared a series of material standards covering the following
cast irons:
— grey cast irons [1];
— malleable cast irons [2];
— spheroidal graphite cast irons [3];
— ausferritic spheroidal graphite cast irons [4];
— abrasion resistant cast irons [5];
— austenitic cast irons [7];
— compacted (vermicular) graphite cast irons [8];
— low alloyed ferritic spheroidal graphite cast irons for elevated temperature applications [9].
In order to assist manufacturers and purchasers to prepare proper contractual arrangements and
prevent misunderstanding, CEN/TC 190 approved the preparation of a series of standards covering
technical delivery conditions. These have been prepared as separate parts.
This document covers the additional technical delivery conditions for all the cast iron materials, e.g.
optional information, manufacturing process, welding operation, additional requirements regarding the
condition of the casting, test methods.
This document cannot be used alone for compiling a specification for ordering and supplying iron
castings, but as a complement to EN 1559-1.
oSIST prEN 1559-3:2025
prEN 1559-3:2025 (E)
1 Scope
This document specifies the additional technical delivery conditions for castings made from all cast iron
materials.
This document applies to iron castings produced in sand or permanent moulds or by centrifugal casting,
continuous casting or investment casting.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 287-6, Qualification test of welders - Fusion welding - Part 6: Cast irons
EN 1011-8, Welding - Recommendations for welding of metallic materials - Part 8: Welding of cast irons
EN 1369, Founding - Magnetic particle testing
EN 1370, Founding - Examination of surface condition
EN 1371-1, Founding - Liquid penetrant testing- Part 1: Sand, gravity die and low pressure die castings
EN 1559-1, Founding - Technical conditions of delivery - Part 1: General
EN 1560, Founding - Designation system for cast iron - Material symbols and material numbers
EN 12680-3, Founding - Ultrasonic testing - Part 3: Spheroidal graphite cast iron castings
EN 12681-1, Founding - Radiographic testing - Part 1: Film techniques
EN 12681-2, Founding - Radiographic testing - Part 2: Techniques with digital detectors
EN 14784-1, Non-destructive testing - Industrial computed radiography with storage phosphor imaging
plates - Part 1: Classification of systems
EN ISO 3452-1, Non-destructive testing - Penetrant testing - Part 1: General principles (ISO 3452-1)
EN ISO 5579, Non-destructive testing - Radiographic testing of metallic materials using film and X- or
gamma rays - Basic rules (ISO 5579)
EN ISO 9934-1, Non-destructive testing - Magnetic particle testing - Part 1: General principles (ISO 9934-1)
EN ISO 15614-3, Specification and qualification of welding procedures for metallic materials - Welding
procedure test - Part 3: Fusion welding of non-alloyed and low-alloyed cast irons (ISO 15614-3)
EN ISO 16371-2, Non-destructive testing - Industrial computed radiography with storage phosphor
imaging plates - Part 2: General principles for testing of metallic materials using X-rays and gamma rays
(ISO 16371-2)
EN ISO 16810, Non-destructive testing - Ultrasonic testing - General principles (ISO 16810)
oSIST prEN 1559-3:2025
prEN 1559-3:2025 (E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1559-1 and of the applicable
material standard apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
4 Information to be supplied by the purchaser
4.1 Mandatory information
Requirements shall be met in accordance with the corresponding clause in EN 1559-1.
The relevant wall thickness shall be given in the order.
4.2 Optional information
Where applicable, the enquiry and order shall include other details, such as requirements for
a) an as-cast condition;
NOTE Heat treatment of malleable cast irons or ausferritic spheroidal graphite cast irons is a function of the
material and is at the discretion of the manufacturer to achieve the desired mechanical properties.
b) special or subsequent heat treatment if required (together with the heat-treatment conditions);
c) heat treatment for stress relieving; it shall be agreed upon between the manufacturer and the
purchaser;
d) intentions to enamel, galvanize, plate, etc. the castings;
e) sequence of machin
...