BS EN 10343:2009 Steels for quenching and tempering for construction purposes. Technical delivery conditions
BS EN 10343 is an indispensable guide to those who specify, purchase or supply steel, of the standard purchase specifications and delivery conditions for steel products intended for use in the Construction Industry.
It includes bars (including hammer-forged bars), wide flats, hot-rolled strip and sheet/plate and forgings. They are manufactured from the direct hardening non alloy steels for quenching and tempering and the direct hardening alloy steels for quenching and tempering and supplied in one of several heat treatment conditions.
These steels are generally intended for the manufacture of quenched and tempered parts, but can also be used in the normalized condition.
BS EN 10343 specifies the technical delivery requirements for the following steel products intended for use in the construction industry:
- Bars (including hammer-forged bars)
- Wide flats
- Hot-rolled strip and sheet/plate
- Forgings.
These steels are intended for the manufacture of quenched and tempered parts, but can also be used in the normalized condition.
The requirements for mechanical properties are restricted to part sizes given in BS EN 10343.
In accordance with BS EN 10020, the steels covered by this standard are quality and special steels. The differences between quality and special steels are characterized by the following requirements, which are valid for special steels only:
- The minimum impact values in the quenched and tempered condition (for non alloy special steels in the case of mean percentages by mass of carbon < 0,50% only)
- Limited oxide inclusion content
- Lower maximum contents for phosphorus and sulphur.
BS EN 10343 does not apply to bright steel products.
This standard only applies for the manufacture of products without any further cold or hot forming and no additional heat treatment.
In addition to the specifications of BS EN 10343, the general technical delivery conditions given in BS EN 10021 will be applicable unless otherwise specified.
Contents of BS EN 10343 include:
- Scope
- Normative references
- Terms and definitions
- Classification and designation
- Designation to be used on ordering
- Manufacturing process
- Requirements
- Inspection
- Evaluation of conformity
- Preparation of samples and test pieces
- Testing on compliance criteria
- Marking, labelling, packaging
- Ruling sections for the mechanical properties
- Terms and Definitions
- Determination of the diameter of the equivalent ruling section
- Dimensional standards applicable to products complying with this European Standard
- Relationship between this European standard and the Essential Requirements of EU Directive 89/106/EEC, EU Construction Products Directive
- Scope and relevant characteristics
- Procedures for the attestation of conformity of structural metallic construction products
- CE marking and labelling.