GOST 7871-2019 PDF

Full title and description

GOST 7871-2019 — Filler wire of aluminium and aluminium alloys. Specifications. The standard specifies technical conditions, supply forms, marking, testing and acceptance rules for solid aluminium and aluminium-alloy welding (filler) wire intended for fusion welding in inert gas environments and in vacuum.

Abstract

GOST 7871-2019 establishes requirements for manufacture, dimensions, chemical composition, mechanical properties, surface condition, tolerances and packaging of aluminium welding (filler) wire. It updates and tightens requirements compared with the previous edition, adds new alloy designations (including some scandium-containing alloys), introduces an “increased accuracy” tolerance class, and defines enhanced surface-roughness and surface-treatment requirements.

General information

• Status: Enacted / active (national standard in force from 1 February 2020).
• Publication date: 2019 (entered into force 01.02.2020).
• Publisher: Federal Agency for Technical Regulation and Metrology (Rosstandart).
• ICS / categories: 77.150.10 — Aluminium products (Products of non‑ferrous metals / Aluminium products).
• Edition / version: GOST 7871-2019 (replaces previous edition GOST 7871-75).
• Number of pages: 24 pages (typical published PDF length).

Scope

The standard applies to solid aluminium and aluminium‑alloy welding (filler) wire intended for welding products and structures made of aluminium and aluminium alloys by melting in inert gas environments (GMAW/TIG/other gas shielding methods) and in vacuum. It covers wire chemical composition, dimensional tolerances, mechanical properties, surface quality, supply forms (coils, spools, drums), testing and marking requirements used for production control and acceptance testing.

Key topics and requirements

• Chemical composition limits and alloy designations for filler wires (including newly listed scandium-containing alloys added in the 2019 edition).
• Dimensional tolerances with an optional “increased accuracy” class (tolerance values reduced compared with the 1975 edition).
• Surface condition requirements and surface‑treatment methods; post‑processing surface roughness requirement tightened (Ra ≤ 0.63 μm specified for processed wire surfaces in the 2019 update).
• Mechanical properties, testing methods, non‑destructive checks and acceptance criteria for production batches.
• Supply and packaging forms (coils, spools and a newly recognised option: wire supplied in drums/barrels), marking, documentation and traceability requirements.
• Inspection, sampling and test-reporting procedures for quality control and conformity assessment.

Typical use and users

Primary users are welding‑consumable manufacturers, aluminium fabricators, shipbuilders, automotive and aerospace suppliers, welding shops and contractors, materials laboratories and quality/inspection bodies that specify or verify filler wire characteristics for production welding processes. Standards and procurement engineers use the document to set procurement technical specifications and acceptance tests for welding wire.

Related standards

Relevant and related documents include the previous edition GOST 7871-75 (superseded), other national GOSTs referenced for aluminium alloys and testing (for example GOST 4784 series for aluminium alloy chemical composition and GOST 14838 series for aluminium welding consumables as used historically), and applicable ISO standards on aluminium products and wire tolerances. Users should review normative references listed in the standard for tests and complementary requirements.

Keywords

aluminium welding wire; filler wire; welding consumables; aluminium alloys; surface roughness; diameter tolerance; packaging; GOST 7871-2019; welding wire specifications.

FAQ

Q: What is this standard?

A: GOST 7871-2019 is the Russian national standard that defines technical specifications for solid aluminium and aluminium‑alloy filler (welding) wire used for fusion welding in inert gas atmospheres and vacuum.

Q: What does it cover?

A: It covers alloy designations and chemical composition limits, dimensional tolerances (including an increased‑accuracy class), surface condition and roughness requirements, mechanical properties, supply/packaging forms, marking, inspection and testing procedures, and acceptance criteria for filler wire.

Q: Who typically uses it?

A: Manufacturers of welding wire, fabricators and weld shops (automotive, shipbuilding, aerospace and general metal‑working), procurement and quality engineers, testing laboratories and standards organisations reference this standard when specifying or verifying aluminium filler wire.

Q: Is it current or superseded?

A: GOST 7871-2019 is the current edition enacted from 1 February 2020 and supersedes GOST 7871-75. Users relying on older editions should migrate to the 2019 requirements.

Q: Is it part of a series?

A: It is part of the body of standards addressing aluminium products and welding consumables; the standard references and is used alongside other GOSTs and international standards covering aluminium alloy specifications, testing methods and product delivery conditions. Check the normative references in the document for the complete set of related standards.

Q: What are the key keywords?

A: Aluminium welding wire, filler wire, welding consumables, aluminium alloys, surface finish, diameter tolerance, packaging, GOST 7871-2019.