GOST 1050-88 PDF

Full title and description

GOST 1050-88 — Long-rolled products, calibrated, with special surface finishing, made of high-quality carbon structural steel. General technical conditions. The standard sets requirements for hot-rolled and calibrated (gauged) long products and bars of quality carbon structural steels, with particular attention to surface finish, dimensions and delivery conditions.

Abstract

GOST 1050-88 is a Soviet-era national standard that provided general technical conditions for quality (non‑alloy) carbon structural steels supplied as hot-rolled or calibrated long products (bars, rods, sections) and forgings, covering grades such as СТ 08, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 58 and 60 up to nominal diameters/thicknesses of about 250 mm. It addresses chemical composition bands, mechanical properties, surface finishing and dimensional/tolerance requirements for products intended for engineering and structural use.

General information

• Status: Withdrawn / replaced (superseded by later editions, see GOST 1050-2013).
• Publication date: Designation year 1988 (edition), printed/issued in available catalogs as 01 January 1991 (official distributed text).
• Publisher: Issued under the State standard system (GOST); historically promulgated by the USSR State Committee for Standards (Gosstandart).
• ICS / categories: Metallurgy — Iron and steel products; classifications reported include ICS 77.140.60 (steel bars and rods) and 77.140.45 (non‑alloyed steels).
• Edition / version: GOST 1050-88 (the “-88” indicates the 1988 edition of the GOST designation). Subsequent consolidated national interstate editions and replacements were published later (e.g., GOST 1050-2013).
• Number of pages: Common catalog listings show 22 pages for the published text.

Scope

The standard applied to hot‑rolled and forged long products and calibrated bars of quality carbon structural steels of multiple grades (08 through 60), with nominal diameters or thicknesses up to approximately 250 mm, and to calibrated bars with special surface finishing of all grades. It set general technical conditions covering chemical composition limits, mechanical property requirements (in particular for normalized or heat‑treated deliveries where relevant), surface quality classes and marking/delivery documentation.

Key topics and requirements

• Definition of applicable quality carbon steel grades (examples: ST08, ST10, ST20, ST25, ST35, ST45, etc.) and typical carbon ranges for those grades.
• Chemical composition limits and impurity maxima (P, S, As, Cu, Ni, Cr etc.) appropriate for quality structural steels.
• Mechanical properties and typical minimum values after standard heat treatments (yield, tensile strength, elongation) for normalized/rolled deliveries.
• Dimensional and tolerance classes for hot‑rolled and calibrated sections up to ~250 mm; requirements for special surface finishing and acceptance criteria for surface defects.
• Marking, inspection, sampling and delivery documentation (mill certificates), plus references to testing methods and related GOSTs.

Typical use and users

Used historically by steel mills, metal service centers, distributors, procurement specialists and design/production engineers specifying quality carbon structural steel bars and long products for mechanical parts (shafts, gears, axles), structural components and general engineering. Also referenced by quality control and metallurgical laboratories for acceptance testing and verification of rolled products.

Related standards

Most directly superseded by GOST 1050-2013 (the later, consolidated general specification for non‑alloyed structural and quality steels). Other related standards commonly invoked alongside GOST 1050-88 include GOSTs covering chemical analysis and test methods for steels, product‑specific standards for bars/sections, and international equivalents for carbon steels (for cross‑reference/rough equivalence purposes).

Keywords

GOST 1050-88, carbon structural steel, quality steel, rolled bars, calibrated bars, special surface finish, ГОСТ, hot‑rolled long products, ST45, ST25.

FAQ

Q: What is this standard?

A: GOST 1050-88 is a state standard that defined general technical conditions for long-rolled and calibrated products made from quality carbon structural steels (bars, rods and similar products), including requirements for composition, mechanical properties, dimensions and surface finish.

Q: What does it cover?

A: It covers hot‑rolled and calibrated (gauged) long products and forgings of non‑alloy carbon structural steels (grades from low‑carbon to medium‑carbon, e.g., 08…60), up to around 250 mm in thickness or diameter, setting chemical, mechanical, dimensional and surface‑quality requirements.

Q: Who typically uses it?

A: Steel producers, metal traders, procurement engineers, product designers and QC/metallurgical labs who need a common national technical reference for quality carbon steels and the acceptance criteria for rolled and calibrated bar products.

Q: Is it current or superseded?

A: Superseded. Catalogs and national registries list GOST 1050-88 as replaced by later editions (notably GOST 1050-2013 and subsequent national adaptations). The 1050-88 text itself is typically listed as withdrawn in commercial standard catalogs.

Q: Is it part of a series?

A: Yes — GOST 1050 belongs to the family of GOST standards covering steel grades and products; the 1050 series has later revisions and related GOSTs that update technical conditions, while many other GOSTs define test methods and product‑specific requirements invoked by 1050.

Q: What are the key keywords?

A: Carbon structural steel, quality steel, rolled bars, calibrated bars, surface finish, mechanical properties, GOST 1050, ГОСТ 1050-88.