This document specifies technical delivery conditions for flat and long products of hot rolled weldable fine grain structural steels in the thermomechanical rolled condition in the grades and qualities given in Tables 1 to 3 (chemical composition) and Tables 4 to 6 (mechanical properties) in thickness ? 150 mm. The steels specified in this document are especially intended for use in heavily loaded parts of welded structures such as, bridges, flood gates, storage tanks, water supply tanks, etc., for service at ambient and low temperatures.

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3	Cross-references
4	Summary of pages
7	9.2.3 Preparation of test pieces for mechanical tests 22 9.3 Identification of samples and test pieces 23 10 Test methods 23 10.1 Chemical analysis 23 10.2 Mechanical tests 23 10.2.1 Tensile test 23 10.2.2 Impact test 23 10.3 Ultrasonic testing 24 10.4 Retests 24 11 Marking, labelling, packaging 24 12 Complaints 25 13 Options 25 Bibliography 45
8	ForewordEuropean foreword
10	2.1 General standards
12	2.3 Standards on testing
20	The products shall be delivered with specific inspection and testing to indicate compliance with the order and this document. The type of inspection document shall comply with EN 10025-1.
21	8.3.2.1 The test unit shall contain products of the same form, grade and of the same thickness range as specified in Table 5 for the yield strength. For verifying the mechanical properties the following test unit shall apply: – 40 tonnes or part thereof.
51	undefined
57	1 Scope 2 Normative references
59	3 Terms and definitions 4 Classification and designation 4.1 Classification 4.1.1 Main quality classes 4.1.2 Grades and qualities
60	4.2 Designation 5 Information to be supplied by the purchaser 5.1 Mandatory information 5.2 Options 6 Manufacturing process 6.1 Steel making process
61	6.2 Deoxidation and grain structure 6.3 Delivery conditions 7 Requirements 7.1 General 7.2 Chemical composition
62	7.3 Mechanical properties 7.3.1 General 7.3.2 Impact properties 7.3.3 Improved deformation properties perpendicular to the surface
63	7.4 Technological properties 7.4.1 Weldability 7.4.2 Formability and flame straightening 7.4.2.1 General 7.4.2.2 Hot forming 7.4.2.3 Cold formability
64	7.4.3 Hot-dip zinc-coating 7.5 Surface properties 7.5.1 Strip 7.5.2 Plates and wide flats 7.5.3 Sections 7.5.4 Bars and rods 7.6 Internal soundness
65	7.7 Dimensions, tolerances on dimensions and shape, mass 8 Inspection 8.1 Type of inspection and inspection document 8.2 Content of inspection document
66	8.3 Tests to be carried out 9 Frequency of testing and preparation of samples and test pieces 9.1 Frequency of testing 9.1.1 Chemical analysis 9.1.2 Mechanical tests 9.2 Preparation of samples and test pieces 9.2.1 Selection and preparation of samples for chemical analysis
67	9.2.2 Location of samples and orientation of test pieces for mechanical tests 9.2.3 Preparation of test pieces for mechanical tests 9.2.3.1 General 9.2.3.2 Preparation of tensile test pieces 9.2.3.3 Preparation of impact test pieces
68	9.3 Identification of samples and test pieces 10 Test methods 10.1 Chemical analysis 10.2 Mechanical tests 10.2.1 Tensile test 10.2.2 Impact test
69	10.3 Ultrasonic testing 10.4 Retests 11 Marking, labelling, packaging 12 Complaints
70	13 Options
76	Annex A (normative)Location of samples and test pieces
79	Annex B (informative)List of Options of EN 10025-2 to −6

Status	Withdrawn
Pages	83
Publication Date	2019-11-19
Withdrawn Date	2021-11-03
ISBN	978-0-539-07042-2
Standard Number	BS EN 10025-4:2019 – TC
Title	Tracked Changes. Hot rolled products of structural steels – Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels
Descriptors	Workability, Metal sections, Sample location, Surface texture, Designations, Rolling, Weldability, Inspection, Hot-working, Test specimens, Angles (metal sections), Chemical composition, Testing conditions, Structural steels, Tensile testing, Sheet materials, Impact testing, T-bars, Steels, Beams, Mechanical testing, Z-bars, Strips, Marking, Bars (materials), Specimen preparation, Channels (metal sections), Compositional tolerances, Fine-grain material
Publisher	BSI
Committee	ISE/103
ICS Codes	77.140.10 - Heat-treatable steels


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