GOST R 58228-2018 PDF

Full title and description

GOST R 58228-2018 — "Continuous cast steel billet. Testing and assessment methods of the macrostructure" (Russian: "Заготовка стальная непрерывнолитая. Методы контроля и оценки макроструктуры"). The standard specifies procedures for preparing, inspecting and assessing the macrostructure of continuously cast billets of various cross-sections (round, square, rectangular, slab) produced from unalloyed, alloyed and stainless steels.

Abstract

This national standard establishes methods for sampling, metallographic preparation, macroscopic examination, defect identification and scoring, and documentation used to evaluate the macrostructure of continuously cast steel billets. It provides uniform assessment scales and guidance for classification of common casting defects so that manufacturers, inspectors and recipients can apply consistent acceptance and quality-control decisions.

General information

• Status: Effective / Active (introduced for the first time).
• Publication date: Approved 19 September 2018; put into effect 1 March 2019.
• Publisher: Federal Agency on Technical Regulation and Metrology (Rosstandart), Russian Federation.
• ICS / categories: 77 Metallurgy — 77.140 Iron and steel products (macrostructure assessment of steel billets).
• Edition / version: First edition (designated 2018, implemented 2019).
• Number of pages: 54 pages (electronic/pdf format).

Scope

The standard applies to continuously cast steel billets of round, square, rectangular and slab cross-sections and covers macrostructural quality-control methods applicable to unalloyed, alloyed and stainless steels. It specifies sampling locations, preparation of sections, visual and low-magnification examination procedures, defect types and definitions, scoring/scale systems for macrostructure assessment, and requirements for reporting results used in production acceptance and incoming inspection.

Key topics and requirements

• Sampling and selection of transverse/longitudinal sections for macrostructure evaluation.
• Preparation of macrosections (cutting, etching/cleaning, surface finishing) to expose macrostructure features.
• Low-magnification visual and photographic examination techniques and recommended illumination/contrast practices.
• Classification and description of common macro-defects (centreline segregation, porosity, cracks, unfavourable columnar-to-equiaxed transitions, pipe, etc.).
• Scales and point/score systems for grading macrostructure quality and assigning accept/reject criteria.
• Documentation and reporting format for inspection results, including required photographs, measurements and remarks.
• Reference normative links to earlier macrostructure test methods and surface-roughness standards as appropriate for interpretation.

Typical use and users

Used by metallurgical production quality departments, incoming-inspection laboratories, foundry and rolling-mill engineers, third‑party inspection bodies, research laboratories and purchasers of continuously cast billets who require a standardized macrostructure assessment for quality control, acceptance testing and process improvement.

Related standards

GOST R 58228-2018 references and aligns with earlier and related documents on macrostructure and surface parameters (for example, national macrostructure test methods and surface roughness standards). Documents that are commonly associated or referenced include earlier GOST methods for macrostructure testing and product-specification standards for billets and billets used in pipe/rolling production. It is also cited by subsequent product standards that use macrostructure acceptance criteria for billets.

Keywords

continuous cast billet, macrostructure, macrosection, sampling, defect classification, centreline segregation, porosity, cracking, metallographic preparation, quality control, Rosstandart.

FAQ

Q: What is this standard?

A: It is a Russian national standard (GOST R 58228-2018) that defines methods for testing and assessing the macrostructure of continuously cast steel billets.

Q: What does it cover?

A: It covers sampling, section preparation, visual/macro‑examination, defect identification and grading scales for continuously cast billets made from unalloyed, alloyed and stainless steels, and provides guidance for documenting and reporting results used in acceptance and quality control.

Q: Who typically uses it?

A: Metallurgical manufacturers, quality and inspection laboratories, technical auditors, purchasers of billets and research/engineering teams involved in casting and rolling process control.

Q: Is it current or superseded?

A: As of its introduction it is an active (effective) standard implemented 1 March 2019; it was approved in September 2018 and introduced as a new national standard. Users should verify on the national registry for any later amendments or replacements.

Q: Is it part of a series?

A: It stands as a product‑specific standard for macrostructure testing of continuously cast billets and is used alongside other GOST/GOST R standards covering macrostructure methods, surface parameters and product specifications for billets and downstream products.

Q: What are the key keywords?

A: Continuous cast billet, macrostructure, macrosection, sampling, defect classification, metallographic preparation, quality control, centreline segregation, porosity.