EN 10305-1:2010

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 10305-1:2009SIST EN 10305-1:2010en01-marec-2010SIST EN 10305-1:2010SLOVENSKI
STANDARDSIST EN 10305-1:20031DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10305-1
January 2010 ICS 77.140.75 Supersedes EN 10305-1:2002English Version
Steel tubes for precision applications - Technical delivery conditions - Part 1: Seamless cold drawn tubes
Tubes de précision en acier - Conditions techniques de livraison - Partie 1: Tubes sans soudure étirés à froid
Präzisionsstahlrohre - Technische Lieferbedingungen -Teil 1: Nahtlose kaltgezogene Rohre This European Standard was approved by CEN on 22 November 2009.
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 CEN 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 CEN 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10305-1:2010: ESIST EN 10305-1:2010

Requirement for additional steel grades . 23Bibliography . 26 SIST EN 10305-1:2010

1) Under revision to become 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 leak-tightness instead of the hydrostatic test (ISO/DIS 10893-1:2009). 2) Under revision to become EN ISO 10893-2, Non-destructive testing of steel tubes
Part 2: Automated eddy current testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of imperfections (ISO/DIS 10893-2:2009). 3) Under revision to become EN ISO 10893-3, Non-destructive testing of steel tubes
Part 3: Automated full peripheral flux leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection of longitudinal and/or transversal imperfections (ISO/DIS 10893-3:2009). SIST EN 10305-1:2010

(ISO 6892-1:2009) EN ISO 8492, Metallic materials — Tube — Flattening test (ISO 8492:1998) EN ISO 8493, Metallic materials — Tube — Drift-expanding test (ISO 8493:1998) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 10020:2000, EN 10021:2006,
EN 10052:1993, EN 10266:2003 and the following apply. 3.1 employer organization for which a person works on a regular basis NOTE The employer can be either the tube manufacturer or a third party organization providing non-destructive testing (NDT) services. 3.2 manufacturer party to produce and to deliver tubes in accordance with this document NOTE Where tubes are delivered by a supplier, see EN 10021:2006, Clause 6. 3.3 imperfection discontinuity in the wall or on the pipe surfaces detectable by methods described in this document NOTE Imperfections with a size complying with the acceptance criteria specified in this document are considered to have no practical implication on the intended use of the product. 3.4 defect imperfection of a size not complying with the acceptance criteria specified in this document
4) Under revision to become EN ISO 10893-10, Non-destructive testing of steel tubes
Part 10: Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transversal imperfections (ISO/DIS 10893-10:2009). SIST EN 10305-1:2010

3.5 mother tube length of tube produced in the final cold drawing process 4 Symbols For the purposes of this document, the symbols in EN 10266:2003 apply. NOTE For tubes specified by the outside diameter and by the inside diameter, "T" is the specified or the calculated wall thickness in this document. 5 Classification and designation 5.1 Classification In accordance with the classification system in EN 10020 the steel grades given in Table 2 are non-alloy quality steels. The steel grades given in Table A.1 are classified as follows: a) non-alloy quality steels (E255, E410, 26Mn5, 10S10, 15S10, 18S10 and 37S10); b) non-alloy special steels (C35E and C45E); and c) alloy special steels (26Mo2, 25CrMo4 and 42CrMo4). 5.2 Designation For the tubes covered by this document, the steel designation consists of the number of this document (EN 10305-1) plus either: a) the steel name in accordance with EN 10027-1; or b) the steel number in accordance with EN 10027-2. 6 Information to be supplied by the purchaser 6.1 Mandatory information The following information shall be obtained by the manufacturer at the time of enquiry and order: a) quantity (mass or total length or number); b) term "tube"; c) dimensions (see 8.5); d) steel designation (see 5.2); e) delivery condition (see 7.2.2); f) type of tube length and, where applicable, the length (see 8.5.2). SIST EN 10305-1:2010

Description Cold drawn / hard +C No final heat treatment after final cold drawing. Cold drawn / soft +LC Final heat treatment is followed by a suitable drawing pass (limited
reduction of area). Cold drawn and stress relieved +SR After final cold drawing the tubes are stress relieved in a controlled atmosphere. Soft annealed +A After final cold drawing the tubes are soft annealed in a controlled atmosphere. Normalized +N After final cold drawing the tubes are normalized in a controlled atmosphere. a In accordance with EN 10027-1. SIST EN 10305-1:2010

Option 1: A steel grade not specified in this document, with a maximum total content of alloying elements of 5 % and agreed chemical composition, mechanical properties and delivery condition, is specified.
NOTE When welding tubes produced in accordance with this document account should be taken of the fact that the behaviour of the steel during and after welding is dependent not only on the steel composition and the delivery condition but also on the conditions of preparing for and carrying out the welding. Table 2 — Chemical composition (cast analysis)a Steel grade % by mass Steel name Steel number C max. Si max. Mn max. P max. Sb
max. Altotalc 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 a Elements not included in this table (but see footnote c 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. b See option 2. c This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements, such as Ti, Nb or V. When using titanium, the manufacturer shall verify that (Al + Ti/2) ≥ 0,020. Additions of Nb, Ti and V are permitted at the discretion of the manufacturer. The content of these elements shall be reported. 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 resulphurising the steel after maximum desulphurisation 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 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.
% by mass Permissible deviation of the product analysis
% by mass C ≤ 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 16280 30290 to 430 215 30 E235 1.0308 480 6 420 10 420 350 16315 25340 to 480 235 25 E355 1.0580 640 4 580 7 580 450e
10450 22490 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.
The tubes shall have smooth outer and inner surfaces.
The following maximum values apply for the roughness Ra: a)
For tubes of outside diameter D ≤ 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
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