GOST 380-2005 PDF

Full title and description

GOST 380-2005 — "Сталь углеродистая обыкновенного качества. Марки" (Common-quality carbon steels — Grades). The standard defines the system of grades (markings) for ordinary-quality carbon steels and gives the essential chemical and classification rules used when producing hot-rolled and cold-rolled products, billets, slabs, forgings, wire, strip, tubes and other general-purpose metal products intended for civil and industrial manufacture.

Abstract

GOST 380-2005 establishes the names and designations (marks) of ordinary-quality unalloyed carbon steels and specifies the ranges for the main chemical elements and classification suffixes (for boiling, semi-killed, killed steels, and variants with increased manganese, etc.). It is intended as a reference for producers, processors and users of common carbon steel products and is referenced by downstream technical specifications for rolled products and metalworking.

General information

• Status: Active / in force (interstate standard adopted 2005; with subsequent amendment(s)).
• Publication date: 2005 (edition 2005; entry into force in 2005; an amendment was recorded in 2007).
• Publisher: Interstate standard adopted through the Interstate Council for Standardization, Metrology and Certification (EASC) / national publication by relevant national standards bodies (e.g., Rosstandart).
• ICS / categories: Metallurgy and iron & steel products — ICS 77.x (77.080 / 77.140 families: steel and iron & steel products — general classification).
• Edition / version: Edition 2005 (original 2005 text; includes at least one recorded amendment integrated into the text).
• Number of pages: Typically a short GOST document (publisher PDFs commonly run to about a dozen pages; exact page count depends on the publisher/print format).

Key bibliographic and status metadata above are derived from official and standards-aggregator records for GOST 380-2005 and from the standard text/annotations (edition 2005, with an amendment recorded in 2007).

Scope

The standard applies to ordinary-quality carbon steels intended for manufacture of hot-rolled products (sectional/long products, thick and thin plates, wide strips, cold-rolled thin sheet), as well as to castings, billets, blooms, slabs, continuously cast blanks, pipes, forgings, stampings, strip, wire, fasteners and other general-purpose metal products. It sets grade designations and fundamental compositional limits used by producers and downstream specifications for product delivery and testing.

Key topics and requirements

• Grade system and marking: standardized names and letter/number combinations for ordinary carbon steels (examples include St0, St1kp, St1ps, St1sp, St2. ., St3kp, St3ps, St3sp, St4kp, St5, etc.).
• Chemical composition ranges for principal elements (carbon, manganese, silicon) and limits for sulfur, phosphorus, nitrogen, copper, chromium, nickel and arsenic; separate limits or notations for boiling, semi-killed and killed steels. (The standard contains tables of mass-fraction ranges and permissible deviations for analysis samples and finished products.)
• Designation of deoxidation types and suffixes (kp, ps, sp, G — indicating killing/deoxidation and manganese content variants) and rules for forming steel marks.
• Permitted chemical deviations between ladle/analysis and finished-product analyses and notes on allowable extra elements when scrap is used in melting.
• Normative references: the standard is intended to be used together with product-specific delivery standards (for example, standards for rolled sections, wire, sheet, forgings) which reference GOST 380-2005 for grade definitions.

Typical use and users

Primary users are steel producers, rolling mills, mill quality/control laboratories, metal traders, fabricators and engineering departments that select steel grades for general structural, mechanical and manufacturing use. The standard is widely used where CIS/EASC GOST grade designations are required for procurement, specifications and technical documentation for construction, manufacturing and metalworking.

Related standards

GOST 380-2005 is commonly used with product and technical delivery standards such as GOST 535-2005 (rolled sections and general delivery conditions for ordinary-quality carbon steel products) and other metal-product specifications. Earlier versions (for example GOST 380-88) were superseded by the 2005 edition; some national and international documents (e.g., ISO 630 references) are cited by the standard for harmonization of certain provisions. Newer national naming/designation standards (published later) also reference or align with GOST 380-series grade practices.

Keywords

GOST 380-2005; carbon steel; ordinary quality; steel grades; St3; St4; kp/ps/sp (deoxidation suffixes); chemical composition; hot-rolled; billets; rolled products; EASC; Rosstandart.

FAQ

Q: What is this standard?

A: GOST 380-2005 is the interstate standard that defines the names and grade designations for ordinary-quality (common) carbon steels, including compositional ranges and marking rules used across producers and product standards.

Q: What does it cover?

A: It covers the system of grades (marks) for ordinary carbon steels and the essential chemical limits and classification suffixes (deoxidation and manganese variants). It does not itself set product dimensions or mechanical test procedures — those are specified in product-specific standards that reference GOST 380-2005 for grade definitions.

Q: Who typically uses it?

A: Steel manufacturers, rolling mills, metallurgical quality laboratories, fabricators, procurement/specification writers, metal distributors and engineers who need to identify and order ordinary carbon steel by GOST mark.

Q: Is it current or superseded?

A: The 2005 edition is the recognized edition for GOST 380 (with at least one amendment recorded after publication). Public records and standards catalogs list the 2005 edition as the active/reference edition; users should check national registries or the issuing standards body for any later amendments or replacement standards before final specification.

Q: Is it part of a series?

A: Yes — GOST 380-2005 is part of the family of GOST documents addressing steel grades and product technical conditions; it is frequently used together with GOST product standards (for example, GOST 535-2005 for rolled sections) and with other GOST/GOST‑R standards that govern specific product types and testing.

Q: What are the key keywords?

A: Carbon steel, ordinary quality, steel grades, St3, St4, deoxidation (kp/ps/sp), chemical composition, hot-rolled products, GOST, EASC.