GOST R 52544-2006 PDF

Full title and description

GOST R 52544-2006 — "Прокат арматурный свариваемый периодического профиля классов А500С и В500С для армирования железобетонных конструкций. Технические условия" (English: Weldable deformed reinforcing rolled products of A500C and B500C classes for reinforcement of concrete constructions — Specifications). This national Russian standard specifies classification, geometric parameters of the periodic profile, mechanical properties, tests, marking, packaging and delivery rules for weldable reinforcing bars (classes A500C and B500C).

Abstract

This standard defines technical requirements for weldable ribbed reinforcing rolled products of classes A500C (hot-rolled or thermomechanically strengthened) and B500C (cold-deformed) intended for reinforcement of concrete structures — covering sizes/diameters, periodic‑profile geometry, mechanical properties (including minimum yield strength 500 N/mm²), inspection and testing methods, and marking/packaging. It is used by producers, suppliers and consumers to ensure interchangeability and conformity of reinforcing steel.

General information

• Status: National standard of the Russian Federation (technical specification / GOST R standard); originally approved and put into effect by the Federal Agency for Technical Regulation and Metrology (Rosstandart) by Order No. 97‑St on 17 May 2006.
• Publication date: 2006 (approval 17 May 2006); date of introduction recorded as 1 January 2007.
• Publisher: Federal Agency for Technical Regulation and Metrology (Rosstandart) / National standards system of the Russian Federation.
• ICS / categories: Metallurgy / reinforcing products — OKС (ICS) 77.140.60 (listed in the standard metadata).
• Edition / version: ГОСТ Р 52544‑2006 (original 2006 text).
• Number of pages: 23 pages (standard PDF editions listed in document libraries).

Scope

Applies to weldable ribbed (periodic profile) reinforcing rolled products of classes A500C and B500C used for reinforcement of reinforced‑concrete structures; defines allowable diameters, profile geometry parameters, mechanical and chemical requirements, test methods (including bending and bend‑re‑straightening), acceptance criteria, marking, packing and delivery. The standard covers bars, coils (hanks) and associated supply forms and conditions.

Key topics and requirements

• Classification: A500C — hot‑rolled or thermomechanically strengthened, weldable; B500C — cold‑deformed (cold‑worked), weldable.
• Mechanical properties: minimum yield strength (σт or σ0.2) not less than 500 N/mm² for both classes; minimum tensile strength typically ≈ 600 N/mm² (A500C) and ≈ 550 N/mm² (B500C) with related elongation and σв/σт ratios specified.
• Dimensional range and tolerances: nominal diameters and corresponding cross‑sectional areas and mass per metre are tabulated (A500C commonly 6–40 mm; B500C commonly 4–12 mm) with percentage tolerances and profile parameter limits (rib height, rib pitch, angular parameters, ovality).
• Periodic profile geometry: mandatory limits for rib height, pitch, transverse‑rib projected area (relative size of shear), inclination angles and profile‑shape tolerances to ensure bond performance with concrete.
• Tests and quality assurance: mandatory mechanical testing (tensile, yield, elongation), bending tests (single cold bend 180° or bend≥90° with subsequent straightening ≥20°), statistical assurance levels for batch properties and acceptance criteria.
• Surface condition and defect classification: surface defects such as cracks, laps, seams and scale that impair performance are not permitted; defect classification per referenced standards (e.g., GOST 21014).
• Marking, packing and delivery: labelling of coils/bundles with manufacturer, nominal diameter, class and batch number; packing/coil weight and bundle mass limits and transport/handling requirements are specified.

Typical use and users

Used by steel producers and rolling mills, construction product suppliers, structural and civil engineers, precast concrete manufacturers, quality laboratories and procurement/specification teams to produce, test, accept and specify weldable ribbed reinforcement for buildings, bridges and other reinforced‑concrete works. The standard is applied when ordering and verifying A500C and B500C rebar and when ensuring conformity of supplied products.

Related standards

Closely related and cross‑referenced documents include: GOST 10884-94 (thermomechanically hardened reinforcing steel), GOST 5781 (historical hot‑rolled rebar standards), GOST 21014 (surface defect classification), and the later consolidated interstate standard GOST 34028-2016 ("Reinforcing rolled products for reinforced concrete constructions. Specifications") which unified and replaced parts of earlier rebar standards (including the hot‑rolled / thermomechanically strengthened aspects of GOST R 52544‑2006). Users should check GOST 34028‑2016 for consolidated current requirements.

Keywords

GOST R 52544-2006; A500C; B500C; reinforcing bar; rebar; periodic profile; weldable deformed bar; yield strength 500 N/mm²; ribbed reinforcement; Russian national standard.

FAQ

Q: What is this standard?

A: ГОСТ Р 52544‑2006 is a Russian national technical standard that specifies technical conditions for weldable ribbed (periodic‑profile) reinforcing rolled products of classes A500C and B500C used to reinforce concrete structures (defines geometry, mechanical properties, tests, marking and delivery).

Q: What does it cover?

A: It covers classification, nominal diameters and tolerances, periodic‑profile geometry and limits, mechanical and some chemical property requirements (including minimum yield strength 500 N/mm²), mandatory tests (tensile, bending and bend‑re‑straighten), acceptance statistics, marking, packing and delivery rules for bars, coils and bundles.

Q: Who typically uses it?

A: Steel rolling mills and manufacturers of rebar, construction product suppliers, design and structural engineers, quality control laboratories and procurement/specification professionals in the building and civil engineering sectors.

Q: Is it current or superseded?

A: The original GOST R 52544‑2006 text remains the dated 2006 specification, but its hot‑rolled and thermomechanically strengthened rebar provisions have been largely incorporated into and superseded (in practice) by the interstate standard GOST 34028‑2016 (effective 01 January 2019 after an implementation postponement). Users are advised to consult GOST 34028‑2016 for the consolidated, current national/interstate requirements and to verify whether GOST R 52544‑2006 remains the applicable document for a specific product form or contract.

Q: Is it part of a series?

A: It is one of several national standards regulating reinforcing steel and related testing/acceptance rules; related documents include older GOSTs (e.g., GOST 5781, GOST 10884) and the later consolidated GOST 34028‑2016. The standard also references other normative documents (surface/defect standards, testing standards) that together make up the regulatory framework for rebar production and acceptance.

Q: What are the key keywords?

A: A500C, B500C, weldable reinforcing bar, periodic profile, ribbed rebar, yield 500 MPa, GOST R, reinforcement for concrete, rebar specifications.