GOST 16252-70 PDF

Full title and description

GOST 16252-70 — Chill moulds. Ventilation passaged stoppers. Construction and dimensions. (Russian: ГОСТ 16252-70. Формы металлические (кокили). Пробки вентиляционные проходные. Конструкция и размеры.) This standard defines the construction, dimensional series and basic material options for ventilation (pass-through) plugs used in metal chill moulds to evacuate gases from the mould cavity during casting.

Abstract

GOST 16252-70 specifies the design, nominal sizes, marking and mass data for ventilation pass-through stoppers (vent plugs) used in metallic chill moulds (kokili). It gives dimensional drawings and a table of standard plug designations and weights, lists permitted materials (steel grade 45 and permitted brass alternatives) and includes guidance on marking and replacement material options. The standard was introduced in 1972 and later amended (Amendment No. 1, 1980).

General information

• Status: Original USSR state standard (issued). Later amended (Amendment No. 1, 1980). Current national applicability may vary — consult the relevant national catalogue for up-to-date status.
• Publication date: 01 January 1972 (date of introduction: 1972‑01‑01).
• Publisher: State Committee for Standards of the Council of Ministers of the USSR (Gosstandart of the USSR).
• ICS / categories: Foundry / metal casting components (UDC and internal classification: UDK 621.744.077:006.354; group GM — moulds and foundry accessories).
• Edition / version: GOST 16252-70 (original 1970/1972 introduction) with Amendment No. 1 (revised edition published 1980/1981 notification).
• Number of pages: 2 (concise technical specification with drawings and tables).

Scope

The standard applies to ventilation pass-through plugs (ventilation stoppers) manufactured for use in chill moulds (metallic moulds/kokili). It defines the permitted shapes, key dimensions, designation system, nominal masses per 100 pieces, basic materials and marking rules. The scope covers plug types intended specifically for venting gases from mould cavities during the casting of metals where chill moulds are used.

Key topics and requirements

• Definitions and intended use: ventilation pass-through plugs for gas evacuation from chill-mould cavities.
• Dimensional drawings and a table of standard plug designations covering a series of diameters and forms (designations such as 0402-0250 … 0402-0261).
• Material requirements: primary material specified as steel (grade 45 per GOST 1050‑74); permitted substitution with specified brass grades under referenced GOSTs.
• Mass data: nominal mass values given per 100 items for each designation and material option.
• Marking and designation: required marking format and examples for plug identification (designation + GOST number and manufacturer marking).
• Conformance and dimensional tolerances: construction and sizes must conform to the drawings and tables included in the standard.

Typical use and users

Primary users are foundry engineers, mould and core makers, tooling designers, quality and procurement specialists in metal casting operations (especially where chill moulds/kokili are used), and manufacturers of mould accessories. The standard is used to specify standard vent plugs for production drawings, procurement specifications and quality inspection documents.

Related standards

Standards and documents frequently referenced together with GOST 16252-70 include material and casting-related GOSTs such as GOST 1050 (steel grades specification), GOST 15527 and GOST 17711 (permitted brass/materiaI references), and other GOSTs in the chill-mould series (examples: GOST 16250-70 — ventilation channels / dimensions; GOST 16260-70, GOST 16261-70, GOST 16262-70 — related kokili components and fastenings). The standard replaced earlier MH 766–60 in its scope.

Keywords

GOST 16252-70, chill moulds, kokili, ventilation plug, vent stopper, pass-through plug, foundry, casting accessories, mould venting, mould components, steel grade 45, brass replacement, dimensional table.

FAQ

Q: What is this standard?

A: GOST 16252-70 is a Soviet-era (USSR) state standard that specifies construction, dimensions and marking for ventilation pass-through plugs used in metallic chill moulds (kokili).

Q: What does it cover?

A: It covers the geometry, standard designations, dimensional tables, nominal masses per 100 pieces, basic material options (steel grade 45 and permitted brass alternatives), and marking rules for vent plugs used to remove gases from mould cavities during casting.

Q: Who typically uses it?

A: Foundry shops, mould/tooling manufacturers, design offices, procurement and quality departments in casting operations, and suppliers of mould accessories use the standard when specifying, producing or purchasing standard vent plugs for chill moulds.

Q: Is it current or superseded?

A: The document was introduced in 1972 and received at least one amendment (Amendment No. 1, issued c. 1980). Its present legal or national status depends on the national standards catalogue of the country of use — some GOSTs remain in force, others have been superseded or integrated into later national/regional standards. Users should consult the current national standards registry for the authoritative status before relying on it for compliance.

Q: Is it part of a series?

A: Yes — GOST 16252-70 is one item in a group of GOSTs covering metallic chill mould components and accessories (other nearby designations include standards for ventilation channels, locks, fastenings and technical requirements for kokili). It also references related material standards for steels and brasses used for plugs.

Q: What are the key keywords?

A: Chill moulds, ventilation plugs, vent stoppers, kokili, foundry accessories, mould venting, GOST 16252-70, steel grade 45, dimensional series, marking.