EN 10149/3-1995 Delivery conditions for normalized rolled steel

EN 10149-3 1995 Hot Rolled Steel Deliverable Conditions

This European Standard specifies the general delivery conditions for hot rolled steel products for use in lightweight structures, with specified minimum yield strength ReH > 460 MPa, concentrically reduced for longitudinal length lF > 8 %, or other types of reduced section.

The requirements of this European Standard apply to the specified grades of steel defined in the corresponding material standards when delivered in the specified heat treatment condition. If the material standard does not specify the delivery condition or any other attribute, the delivery condition is assumed to be as rolled.

Requirements on work carried out prior to shipment under this standard are specified in the material standard.

Surface quality of the surface layer of the steel shall be as stated in the material standard. The surface finish shall be judged in accordance with the type of marking or its absence.

Product analysis shall be carried out in accordance with the requirements of the material standard. Chemical requirements for this European Standard are given for information only.

For hot rolled steel products included in this standard, the mechanical properties shall be as specified in the material standard, unless otherwise agreed.

Tolerances on dimensions and form shall be as specified in the material standard.

This European Standard specifies acceptance criteria for macro-structural features such as flatness, texture of the surface finish and microstructural features such as patches of decarburizing at the edges.

Unless otherwise specified in the material standard, no requirement is defined for surface defects. It is the suppliers responsibility to make sure that any surface defect does not substantially affect the properties of the steel for the intended use of the product.

Marking requirements are laid down in the material standard.

Exchange of information between supplier and purchaser shall be specified in the material standard.

This European Standard does not include any testing requirement, except the product analysis required in the material standard. Agreement between supplier and purchaser on additional tests, where necessary, shall be specified in the material standard.

This European Standard does not address the hazards involved in the use of the steel and its products and is not applicable to products intended for high temperature or pressure services.

EN 10149/3-1995 Delivery Conditions for Cold Rolled Flat Products

The EN 10149/3-1995 delivery conditions standard applies to cold-rolled flat products in the form of sheet, strip, and coils. These flat products are steels classified according to the EN 10149/3-1995 specification and are intended for applications requiring good weldability, high formability, good mechanical properties, and excellent surface quality. To ensure this, the steel properties are fine-tuned to realization of the enhanced cold-rolling parameters outlined by the standard.

The EN 10149/3-1995 delivery conditions standard defines minimum pyhsicalcl values of the steel in both the longitudinal and transverse directions, although they may vary slightly depending on the particular steel type being used. The standard also specifies limitations on the chemical composition of the steel, as well as specific mechanical properties such as minimum tensile strength and yield strength. Additionally, the standard outlines requirements for cleanliness, surface finish, and internal soundness.

The EN 10149/3-1995 specification provides additional requirements for performance Levels (PLs), which are a combination of mechanical, chemical, and physical properties that must be achieved in order to produce a given type of product. It also specifies additional requirements for Certificate 3.2 for the German Steel Construction certification body to ensure that the products are of a consistent quality level guaranteed by the manufacturer.

In conclusion, EN 10149/3-1995 delivery conditions provide a valuable set of guidelines for ensuring that the products produced are of an acceptable quality level, with appropriate mechanical and chemical characteristics, as well as cleanliness, surface finish, and internal soundness. This standard should be strictly adhered to by manufacturers in order to ensure customer satisfaction and product reliability.