GOST 8479-70 PDF

Full title and description

GOST 8479-70 — "Forgings of structural carbon and alloy steel. General specifications." The standard establishes technical requirements, classification, acceptance and delivery rules for general-purpose forgings (hot-forged and hot-stamped) made from structural carbon, low-alloy and alloy steels.

Abstract

This Soviet-era national standard (designated 8479-70) defines groups of forgings, dimensional and form requirements, mechanical-property categories, sampling for tests, marking and documentation for forgings with diameters (thicknesses) up to 800 mm. It includes provisions on storage, acceptance testing and permissible manufacturing defects and was issued with a series of subsequent amendments.

General information

• Status: Original GOST standard (issued 1970/introduced 1971); historically maintained with amendments and still referenced in industry documentation — jurisdictional status may vary by country and over time.
• Publication date: Designation year 1970; introduced into effect 1 January 1971 (entry into force per original approval).
• Publisher: State Committee for Standards of the USSR (Gosstandart / USSR State Standard).
• ICS / categories: Metallurgy / ferrous metal products; forgings; technical specifications (classification, testing, acceptance).
• Edition / version: ГОСТ 8479-70 (with recorded amendments issued in 1977, 1982 and 1986 in later reprint/editions).
• Number of pages: Typically published as a short standard — commonly listed as 9 pages in available reproductions.

Scope

Applies to general-purpose forgings of structural carbon, low-alloy and alloy steels produced by free forging and hot stamping with nominal diameters (thicknesses) up to 800 mm. The standard sets grouping rules (by intended use and mechanical-property categories), requirements for material selection, dimensional tolerances, surface condition, sampling for mechanical and metallurgical tests, marking, packaging and delivery documentation.

Key topics and requirements

• Classification of forgings into groups based on intended application and mechanical properties.
• Permitted steels and recommended steel grades by forging size and required strength category.
• Dimensional and shape tolerances for common forging types (round, rectangular, rings, shafts, etc.).
• Requirements for sampling, sample size/location, and mechanical testing (tensile, impact, bend) and microstructure examination.
• Surface defect allowances, machining allowances, and repair/acceptance rules for defects.
• Marking, packaging, storage conditions and required accompanying documentation for acceptance and shipment.

Typical use and users

Used by steelworks, forging manufacturers, foundries and shops producing hot-forged blanks and forgings for mechanical engineering, transport, oil & gas and general machinery. Typical users include production engineers, quality/inspection laboratories, procurement specialists specifying raw forgings, and design engineers who reference standard tolerances and property categories for component preforms.

Related standards

Commonly referenced alongside other GOSTs that define steel grades, heat treatment and dimensions for forgings and blanks — examples found in the trade/technical literature include GOST 25054 series, GOST 7829, GOST 7505 and later/parallel standards covering specific steel grades or forging types and inspection procedures. Implementing documents and amendments (1977, 1982, 1986) are associated with the 8479-70 text in reprints.

Keywords

GOST 8479-70; forgings; pokovki; structural steel; alloy steel; hot forging; technical specifications; sampling; acceptance; USSR standard.

FAQ

Q: What is this standard?

A: GOST 8479-70 is a Soviet national standard titled "Forgings of structural carbon and alloy steel. General specifications" that defines technical requirements, classification and acceptance rules for general-purpose forgings.

Q: What does it cover?

A: It covers forgings (hot-forged and hot-stamped) up to 800 mm in diameter/thickness made from structural carbon, low-alloy and alloy steels — including grouping, dimensional/tolerance rules, mechanical testing, sampling, marking, storage and delivery documentation.

Q: Who typically uses it?

A: Steel and forging manufacturers, procurement and quality engineers, metallurgical and testing laboratories, and designers who need standardized preform specifications for parts manufacturing.

Q: Is it current or superseded?

A: GOST 8479-70 is an historical standard (designated in 1970 and introduced in 1971) that has recorded amendments; its legal/operational status varies by country and over time — some organizations and national services still reference or temporarily reinstate it for information or transitional use. Users should verify current national/regional applicability before relying on it for certification or regulatory compliance.

Q: Is it part of a series?

A: It forms part of the family of GOST standards addressing steel, forgings and manufacturing/inspection practices; other related GOSTs cover specific steel grades, forgings with special requirements and testing methods. See related standards listed above for common cross-references.

Q: What are the key keywords?

A: Forgings, pokovki, structural carbon steel, alloy steel, hot forging, sampling, mechanical tests, marking, GOST 8479-70.