GOST R ISO 5817-2021 PDF

Full title and description

GOST R ISO 5817-2021 — Welding. Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded). Quality levels for imperfections. This is the Russian national adoption (GOST R) of the ISO standard addressing acceptance/quality levels for imperfections in fusion-welded joints.

Abstract

Specifies quality levels of imperfections in fusion-welded joints (except beam welding) for steels, nickel and titanium and their alloys. The standard gives three quality levels (B, C and D) to cover a range of fabrication requirements, and provides acceptance limits for common imperfection types; it applies to manually, mechanized and automatic welding and to all positions and common weld types.

General information

• Status: Current national standard (GOST R adoption in force from 01 September 2021).
• Publication date: Approved by Rosstandart on 11 June 2021; introduced (official effective date) 1 September 2021.
• Publisher: Federal Agency on Technical Regulating and Metrology (Rosstandart) — national publication as GOST R ISO 5817-2021.
• ICS / categories: 25.160.40 (Welded joints and welds).
• Edition / version: 2021 edition (GOST R adoption of the international text referenced at the time).
• Number of pages: 32 pages (typical published GOST R document length).

Scope

Applies to fusion-welded joints in non-alloy and alloy steels, nickel and nickel alloys, titanium and titanium alloys with material thicknesses from about 0.5 mm and up; covers fully penetrated butt welds and fillet welds (principles extendable to partial-penetration butt welds). The document sets acceptance limits for common imperfections (porosity, cracks, incomplete penetration/fusion, overlap, undercut, etc.) referenced to quality levels B, C and D.

Key topics and requirements

• Definition and classification of common weld imperfections (porosity, cracks, lack of fusion/penetration, overlap, etc.).
• Three graded quality levels (B — most stringent, C, D — least stringent) with numeric/graphical acceptance limits for each imperfection type.
• Application guidance for different materials, weld types and welding processes (manual, mechanized, automatic).
• Inspection and acceptance criteria applicable to visual and nondestructive examination methods (radiographic, ultrasonic, etc.), with reference to appropriate NDT standards.
• Notes and annexes giving additional guidance (e.g., fatigue considerations and application notes for specific joint types).

Typical use and users

Used by welding engineers, quality-control and NDT personnel, fabricators, construction and mechanical design teams, procurement/specification authors, and certification bodies to specify and verify acceptable weld quality in manufacturing, construction, pressure equipment, transport (rail, shipbuilding), and other industries requiring controlled weld quality.

Related standards

Closely related to ISO 5817 (international text) and other welding and NDT standards such as ISO 13919 (beam-welded joints guidance), ISO 4063 (welding process classification), and relevant national/industry welding procedure and qualification standards. Note: ISO 5817 was later updated at international level (new ISO 5817:2023); GOST R ISO 5817-2021 is the 2021 national adoption in Russia of the international text current at that time.

Keywords

welding; fusion-welded joints; weld quality; imperfections; acceptance levels; porosity; lack of fusion; cracks; ISO 5817; GOST R; Rosstandart; NDT.

FAQ

Q: What is this standard?

A: GOST R ISO 5817-2021 is the Russian national adoption (GOST R) of the international standard that defines quality levels and acceptance limits for imperfections in fusion-welded joints of steels, nickel and titanium alloys.

Q: What does it cover?

A: It covers classification of weld imperfections and numeric/graphical acceptance criteria for three quality levels (B, C, D) for butt and fillet welds produced by fusion welding (beam welding excluded), and gives guidance on applying those levels across materials and welding processes.

Q: Who typically uses it?

A: Welding engineers, fabricators, inspectors, NDT technicians, QA/QC staff, procurement/specification authors, and certification bodies in industries where controlled weld quality is mandatory (pressure equipment, structural fabrication, transport, energy, etc.).

Q: Is it current or superseded?

A: GOST R ISO 5817-2021 was approved by Rosstandart on 11 June 2021 and came into effect on 1 September 2021 as the national adoption current at that time. Internationally, ISO released a revised edition ISO 5817:2023 (published Feb 2023); users should check Rosstandart for any later Russian updates or re-adoptions that reference the 2023 ISO edition.

Q: Is it part of a series?

A: It is part of the family of welding-related standards (ISO/TC 44/SC 10 work) and is used alongside complementary standards for welding procedures, welder qualification and NDT (for example ISO 4063, ISO 13919, ISO 17637, ISO 17640, etc.).

Q: What are the key keywords?

A: weld quality, imperfections, acceptance limits, B C D quality levels, fusion welding, welded joints, NDT, Rosstandart, GOST R ISO 5817-2021.