GOST 805-95 PDF

Full title and description

GOST 805-95 — Чугун передельный. Технические условия (Steelmaking pig iron. Specifications). The standard specifies grades, chemical composition limits, form and mass of ingots (chushki), acceptance and testing rules, marking and packaging requirements for pig iron intended for further conversion to steel or remelting in foundry operations.

Abstract

GOST 805-95 defines technical requirements for steelmaking (process) pig iron produced in blast-furnace operations and supplied in ingot form for subsequent steelmaking or foundry remelting. It contains grade classifications (for example P, PL, PF, PVK families), compositional limits for key elements (C, Si, Mn, P, S and selected impurities), requirements for ingot weight/shape, permissible defects, sampling and test methods, and an informative annex aligned with ISO 9147-87. The standard was adopted in 1995 and put into effect from 1 January 2000.

General information

• Status: Active (in force / действует).
• Publication date: Adopted 1995; date of introduction (into force): 01 January 2000.
• Publisher: Межгосударственный совет по стандартизации, метрологии и сертификации / Interstate Council for Standardization, Metrology and Certification (EASC); prepared by relevant technical committee (metallurgy).
• ICS / categories: 77.080.10 (Iron and steel products / pig iron).
• Edition / version: GOST 805-95 (original 1995 edition / designation retains "-95").
• Number of pages: 9 pages (typical published text).

Scope

The standard applies to process (steelmaking) pig iron produced for subsequent reprocessing into steel or for remelting in iron-foundry shops to make castings. It covers designation of grades and groups by chemical composition, limits for phosphorus and sulfur classes, forms and permissible weights of ingots (chushki), allowable content of broken pieces in a lot, surface quality requirements, sampling procedures and test methods (with normative references to lab analysis standards), and marking/packaging rules. An informative annex provides classification guidance consistent with ISO 9147-87.

Key topics and requirements

• Grade classification: multiple grades such as ПЛ (PL), П (P), ПФ (PF), ПВК (PVK) with subgroups defined by Si and Mn ranges.
• Chemical composition limits: specified ranges and maximums for carbon, silicon, manganese, phosphorus (by classes A, B, V), sulfur (by categories 1–5) and other controlled impurities.
• Physical form and weights: requirements for ingot (chushka) shape, allowable neck thickness at squeezes, and standard mass ranges (examples: up to 18, 30, 45, 55 kg depending on type/producer).
• Quality acceptance: limits on slag residues, allowable percentage of broken pieces (broke) per lot, surface cleanliness and permissible coatings/oxides that do not affect quality.
• Sampling and testing: refers to established GOST methods for sampling and chemical analysis (sampling procedures, determination of C, S, P, etc.).
• Marking, packing and documentation: requirements for marking each lot/ingot, accompanying certificates of chemical composition and compliance, and packaging for transport/storage.
• Normative cross-reference: annex alignment with ISO 9147-87 for classification of ingot pig iron.

Typical use and users

Primary users are blast-furnace operators, steelworks and foundries, metal traders and suppliers, quality assurance and inspection laboratories, procurement specialists in metallurgical and casting industries, and regulatory/standards bodies handling raw material specifications for steelmaking or foundry feedstock.

Related standards

Standards commonly referenced together with GOST 805-95 include the preceding national standard GOST 805-80 (which 805-95 replaced), ISO 9147-87 (classification of pig iron in ingots), and GOST methods for sampling and chemical analysis such as GOST 7565-81 and the GOST 22536 series for determination of carbon, sulfur and other elements. Other GOSTs for cast iron and foundry grades (for example GOST 4832-95) are also relevant when distinguishing product types.

Keywords

GOST 805-95; pig iron; steelmaking pig iron; передельный чугун; chushki; specifications; chemical composition; ingots; ISO 9147; metallurgy; foundry feedstock.

FAQ

Q: What is this standard?

A: GOST 805-95 is the interstate standard that sets technical conditions and specifications for steelmaking (process) pig iron supplied in ingot form for subsequent conversion to steel or remelting in foundries.

Q: What does it cover?

A: It covers grade designations, chemical composition limits, physical form and mass of ingots, permissible defects, sampling and testing procedures, marking, packaging and acceptance rules; an annex aligns classification with ISO 9147-87.

Q: Who typically uses it?

A: Steelmakers, foundries, metal suppliers and traders, QA/laboratory staff, procurement and standards organizations involved with raw metallurgical feedstocks use the standard to specify and verify pig iron quality.

Q: Is it current or superseded?

A: GOST 805-95 superseded GOST 805-80 and is listed as in force (active). Its date of introduction into force is 1 January 2000 (adopted in 1995). Users should check national/regional registries for any later amendments or replacements.

Q: Is it part of a series?

A: It is part of the metallurgical/ferrous materials family of standards and is used alongside sampling and test-method standards (for example the GOST 22536 series) and standards for related cast-iron types; annex A references ISO 9147 classification guidance.

Q: What are the key keywords?

A: Pig iron, process pig iron, chushki, chemical composition, ingots, steelmaking feedstock, foundry remelt, GOST 805-95, ISO 9147.