ISO 14788:2017 pdf download

ISO 14788:2017 pdf download.Steel sheet, zinc-5 % aluminium alloy-coated by the continuous hot-dip process, of commercial, drawing and structural qualities
1 Scope
This document is applicable to the minimum requirements for steel sheet, in coils and cut lengths,metallic-coated by the continuous hot-dip process, with zinc-5 % aluminium alloy coating.
The product is intended for applications requiring corrosion resistance, formability and paintability.
The steel sheet is produced in a number of quality designations and grades, coating type, coating mass,surface treatments and coating finish conditions designed to be compatible with differing application requirements.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1460, Metallic coatings — Hot dip galvanized coatings on ferrous materials — Gravimetric determination of the mass per unit area
ISO 2178, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness —Magnetic method
ISO 3497, Metallic coatings — Measurement of coating thickness — X-ray spectrometric methods
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 7438, Metallic materials — Bend test
ISO 16163, Continuously hot-dipped coated steel sheet products — Dimensional and shape tolerances
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1 commercial
base-metal quality intended for general fabricating purposes where sheet is used in the flat condition,or for bending or moderate forming
3.2 drawing
base-metal quality intended for parts where drawing or severe forming may be involved
5.4 Mechanical properties
5.4.1 Commercial and drawing quality
5.4.1.1 Ordering conditions
Zinc-5 % aluminium alloy-coated steel sheet of designations 01, 02, 03, 04 and 05 is supplied under the following two ordering conditions. a) Ordering condition A: steel when ordered to mechanical properties shall, at the time the steel is made available for shipment, satisfy the applicable requirements of Table 4, when they are determined on test pieces obtained in accordance with the requirements in Clause 7. The values specified in Table 4 are applicable for the periods indicated in Table 5 from the time that the steel is available for shipment. b) Ordering condition B: steel when ordered to make an identified part shall be supplied with a commitment to satisfactory manufacturing performance within a properly established breakage allowance, which shall be previously agreed upon between the interested parties. In these cases, the part name, the details of fabrication, and special requirements (such as freedom from stretcher strain or fluting) shall be specified. In the case of ordering condition B, mechanical properties of the steel sheet may also be agreed upon by the interested parties and such properties may not necessarily satisfy the requirements of Table 4.