ISO 4990:2015 pdf download.Steel castings — General technical delivery requirements
1 Scope
This International Standard specifies the general technical delivery requirements for the supply of steel, nickel, and cobalt alloy castings, including the requirements for the selection and preparation of samples and test pieces. When a material or product standard differ from this delivery specification, the material or product standard shall apply. In the case of investment castings, ISO 16468 will apply. This International Standard also specifies a group of supplementary requirements which may be applied to steel, nickel, and cobalt alloy castings. These requirements are provided for use when additional testing or inspection is desired and apply only when individually specified by the purchaser.
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 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 404:2013, Steel and steel products — General technical delivery requirements
ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels — Part 2: Ferritic,austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing sulfuric acid
ISO 4948-1, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based on chemical composition
ISO 4986, Steel castings — Magnetic particle inspection
ISO 4987, Steel castings — Liquid penetrant inspection
ISO 4992-1, Steel castings — Ultrasonic examination — Part 1: Steel castings for general purposes
ISO 4992-2, Steel castings — Ultrasonic examination — Part 2: Steel castings for highly stressed components
ISO 4993, Steel and iron castings — Radiographic inspection
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 6892-2, Metallic materials — Tensile testing — Part 2: Method of test at elevated temperature
ISO 6929:2013, Steel products — Vocabulary
ISO 10474, Steel and steel products — Inspection documents
ISO 11970, Specification and approval of welding procedures for production welding of steel castings
ISO 11971, Steel and iron castings — Visual examination of surface quality
ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical composition
In the case of impact tests, if the average value obtained from the three tests does not reach the minimum specified value or if one of the individual values does not reach the specified minimum (i.e. 70 % of the minimum specified value), the manufacturer may test three additional test pieces. The additional test pieces shall be selected from the same test block or from another block from the same heat and heat treated test lot to represent the castings in question. The results from these additional tests shall be added to the results previously obtained and the average recalculated. If this new average satisfies the average value specified, the material represented may be considered to satisfy the requirements of the material standard. Where the new average value does not satisfy the specified requirements, or any one of the new values is less than 70 % of the minimum specified value, the manufacturer may then follow the procedure specified in c).
ISO 4990:2015 pdf download
