ISO 9717:2017 pdf download

ISO 9717:2017 pdf download.Metallic and other inorganic coatings — Phosphate conversion coating of metals
1 Scope
This document specifies a process for the confirmation of requirements for phosphate coatings which are usually destined for application on ferrous materials, zinc, cadmium and their alloys (see Annex B).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2080, Metallic and other inorganic coatings — Surface treatment, metallic and other inorganic coatings — Vocabulary
ISO 3892, Conversion coatings on metallic materials — Determination of coating mass per unit area —Gravimetric methods
ISO 4519, Electrodeposited metallic coatings and related finishes — Sampling procedures for inspection by attributes
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2080 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
4 Information to be supplied by the purchaser to the processor
The following information shall be provided by the purchaser.
a) A description of the coating according to this document, i.e. ISO 9717 (see 5.2).
b) In cases of phosphating steel parts with tensile strength ≥ 1 000 MPa, possibly also locally restricted, e.g. for case-hardened or cold-formed structures or in weld seam areas, the safety against brittle fracture (hydrogen embrittlement) is of primary importance. The phosphatising process shall be carried out in such a manner that any damage caused by hydrogen-induced brittleness is excluded. Technical measures to minimize the risk of hydrogen-induced brittleness shall be defined by the user and provided by the supplier/customer. Heat treatment in accordance with any recommendations cannot guarantee full freedom from hydrogen embrittlement. The performance of the heat treatment shall be demonstrated by the supplier.
c) The sampling procedure, the acceptable quality limit or any other requirements and tests that deviate from ISO 4519.
d) The surface treatment or phosphating.
e) The appearance of the surface.
f) The corrosion resistance.
g) The quality, appearance and condition of basis metal, if any of these properties affect the usability and/or appearance of coatings.
h) Where applicable, technical measures to minimize the risk of hydrogen induced brittleness as defined by the user.