EN 10305-1:2016

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Präzisionsstahlrohre - Technische Lieferbedingungen - Teil 1: Nahtlose kaltgezogene RohreTubes de précision en acier - Conditions techniques de livraison - Partie 1: Tubes sans soudure étirés à froidSteel tubes for precision applications - Technical delivery conditions - Part 1: Seamless cold drawn tubes77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 10305-1:2016SIST EN 10305-1:2016en,fr,de01-oktober-2016SIST EN 10305-1:2016SLOVENSKI
STANDARDSIST EN 10305-1:20101DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10305-1
March
t r s x ICS
y yä s v rä y w Supersedes EN
s r u r wæ sã t r s rEnglish Version
Steel tubes for precision applications æ Technical delivery conditions æ Part
sã Seamless cold drawn tubes Tubes de précision en acier æ Conditions techniques de livraison æ Partie
sã Tubes sans soudure étirés à froid
Präzisionsstahlrohre æ Technische Lieferbedingungen æTeil
sã Nahtlose kaltgezogene Rohre This European Standard was approved by CEN on
s z January
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
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t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s r u r wæ sã t r s x ESIST EN 10305-1:2016

Requirement for additional steel grades . 25 Bibliography . 28
¶ 380 mm. This document may also be applied to other types of cross sections. Tubes according to this document are characterized by having precisely defined tolerances on dimensions and a specified maximum surface roughness. Typical fields of application are in the automotive, furniture and general engineering industries. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10020:2000, Definition and classification of grades of steel EN 10021:2006, General technical delivery conditions for steel products EN 10027-1, Designation systems for steels - Part 1: Steel names EN 10027-2, Designation systems for steels - Part 2: Numerical system EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10168, Steel products - Inspection documents - List of information and description EN 10204, Metallic products - Types of inspection documents EN 10266:2003, Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for use in product standards EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377) EN ISO 2566-1, Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels (ISO 2566-1) EN ISO 4287, Geometrical product specifications (GPS) - Surface texture: Profile method - Terms, definitions and surface texture parameters (ISO 4287) EN ISO 6892-1, Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1) EN ISO 8492, Metallic materials - Tube - Flattening test (ISO 8492) EN ISO 8493, Metallic materials - Tube - Drift-expanding test (ISO 8493) EN ISO 10893-1, Non-destructive testing of steel tubes - Part 1: Automated electromagnetic testing of seamless and welded (except submerged arc-welded) steel tubes for the verification of hydraulic leaktightness (ISO 10893-1) SIST EN 10305-1:2016

Option 1: specification of a steel grade not specified in this document (see 8.2);
Option 2: specification of a sulphur range to support machinability (see 8.2);
Option 3: suitability for hot-dip galvanizing (see 8.2); SIST EN 10305-1:2016

Option 4: surface condition for further processing (see 8.4.1);
Option 8: measurement of surface roughness (see 8.4.3);
Option 9: specific surface roughness (see 8.4.3);
Option 10: tube surfaces free from not easily removable substances (see 8.4.6);
Option 12: non-destructive testing for the detection of longitudinal imperfections (see 8.4.7);
Option 13: non-destructive testing for verification of leak-tightness (see 8.4.7);
Option 15: specification of a cross section other than circular (see 8.5.1.1);
Option 16: reduced diameter tolerances (see 8.5.1.2);
Option 17: unilateral diameter tolerances (see 8.5.1.2);
Option 18: reduced eccentricity (see 8.5.1.3);
Option 19: reduced wall thickness tolerance (see 8.5.1.4);
Option 20: unilateral wall thickness tolerance (see 8.5.1.4);
Option 22: reduced maximum deviation from straightness (see 8.5.3);
Option 23: specified end finishing (see 8.5.4);
Option 25: flattening or drift expanding test for delivery condition +A or +N (see Table 8);
Option 26: test unit with tubes from one cast only (see 10.1);
Option 28: alternative marking (see Clause 12);
Option 29: delivery without corrosion protection (see Clause 13);
Option 30: specified corrosion protection (see Clause 13);
Option 38: unbundled tubes or specific method of packaging (see Clause 13). 6.3 Example of an order 12 000 m tube with an outside diameter of D = 60 mm and an inside diameter of d = 56 mm in accordance with this document, made of steel grade E235 in the normalized condition, delivered in random lengths, with a 3.1 inspection certificate in accordance with EN 10204: 12 000 m tube – D 60 x d 56 – EN 10305-1 – E235+N – random length – inspection certificate 3.1 SIST EN 10305-1:2016

max. Altotalb min. E215 1.0212 0,10 0,05 0,70 0,025 0,025 0,025 E235 1.0308 0,17 0,35 1,20 0,025 0,025 0,015 E355 1.0580 0,22 0,55 1,60 0,025 0,025 0,020 Elements not quoted in this table (but see footnote b) shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for the purposes of deoxidation and/or nitrogen binding. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process. a See option 2. b This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements,
such as Ti, Nb or V. If added, the content of these elements shall be reported in the inspection document. When using
titanium, the manufacturer shall verify that (Al + Ti/2)
· 0,020. Option 2: For the steel grades E235 and E355 a controlled sulphur content of 0,015 % to 0,040 % is specified to support machinability. It shall be obtained by resulphurizing the steel after maximum desulphurization or alternatively by using a low oxygen process. Option 3: The chemical composition of the specified steel grade shall be such that it is suitable for hot-dip galvanizing (see e.g. EN ISO 1461 or EN ISO 14713-2 for guidance). Table 3 and Table A.2 specify the permissible deviation of product analysis from the specified limits on cast analysis given in Table 2 and Table A.1. SIST EN 10305-1:2016

¶ 0,22 + 0,02 Si
¶ 0,55 + 0,05 Mn
¶ 1,60 + 0,10 P
¶ 0,025 + 0,005 S
¶ 0,040 ±0,005 Al
· 0,015 - 0,005 8.3 Mechanical properties The mechanical properties of the tubes shall conform to the requirements of Table 4, Table A.3 and, if applicable, 11.2 or 11.3. NOTE Subsequent processing (cold or hot) may change the mechanical properties. Table 4 — Mechanical properties at room temperature Steel grade Minimum values for the delivery conditiona +Cb +LCb +SR +Ac +N Steel name Steel number Rm MPa A % Rm MPa A % Rm MPa ReH MPa A % Rm MPa A % Rm MPa ReHd MPa A % E215 1.0212 430 8 380 12 380 280 16 280 30 290 to 430 215 30 E235 1.0308 480 6 420 10 420 350 16 315 25 340 to 480 235 25 E355 1.0580 640 4 580 7 580 450e 10 450 22 490 to 630 355 22 a Rm: tensile strength; ReH: upper yield strength (but see 11.1); A: elongation after fracture. For symbols for the
delivery condition see Table 1. b Depending on the degree of cold work in the finishing pass the yield strength may nearly be as high as the
tensile
strength. For calculation purposes the following relationships are recommended:
— for delivery condition +C: ReH
· 0,8 Rm;
— for delivery condition +LC: ReH
· 0,7 Rm. c For calculation purposes the following relationship is recommended: ReH
· 0,5 Rm. d For tubes with outside diameter
¶ 30 mm and wall thickness
¶ 3 mm the ReH minimum values are 10 MPa
lower than the values given in this table. e For tubes with outside diameter > 160 mm: ReH
· 420 MPa. 8.4 Appearance and internal soundness 8.4.1 The internal and external surface finish of the tubes shall be typical of the manufacturing process and, where applicable, the heat treatment employed. Option 4: A surface condition suitable for special further processing is specified by the purchaser. SIST EN 10305-1:2016

¶ 260 mm: —
¶ 4 µm on the outer surface of tubes in the delivery conditions +SR, +A and +N; —
¶ 4 µm on the outer and inner surface of tubes in the delivery conditions +C and +LC, where the requirement for the inner surface applies for specified or calculated inside diameters
· 15 mm; b) For tubes of outside diameter D > 260 mm:
¶ 6 µm on the outer and inner surface. 8.4.3 Verification of surface roughness and/or improved levels of roughness may be specified (see options 8 and 9). Option 8: The surface roughness shall be measured in accordance with 11.5 and reported. Option 9: A specific surface roughness of agreed type and limiting value is specified. The roughness shall be measured and reported. 8.4.4 Surface imperfections which encroach on the specified minimu
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