GOST 9013-59 PDF

Full title and description

GOST 9013-59 (ГОСТ 9013–59) — Metals. Method of measuring Rockwell hardness. Establishes the Rockwell hardness test procedure (regular Rockwell scales A, B, C, D, E, F, G, H, K), required indenters (diamond cone and steel balls), loads and measurement conditions for metallic materials.

Abstract

This interstate standard specifies the principle and procedure for determining Rockwell hardness by measuring the depth of penetration of a diamond cone or steel ball under a sequence of preliminary and main test forces. It covers scales, test loads, indenter types and dimensions, specimen preparation and dimensional limits, surface finish requirements and procedural timings (test temperature normally 20 °C).

General information

• Status: Interstate standard — maintained and published with amendments; limitation of term of validity removed by interstate protocol (standard retained in force as amended).
• Publication date: Approved 4 February 1959; date of introduction recorded as 1 January 1969; printed re‑edition with amendments October 2001 (with subsequent correction published 2002).
• Publisher: Official standards publisher (IPK — Издательство стандартов, Moscow) / reprinted by standards publishing houses in 2001.
• ICS / categories: Mechanical testing of metals — ICS 77.040.10 (Rockwell hardness); classification Group B09, OKSTU 1909 (as given in the standard).
• Edition / version: Designation GOST 9013-59 (original 1959); text harmonized with ISO 6508 (noted as corresponding to ISO 6508‑86) and issued with Amendments No.1–3; reprinted edition October 2001 with a correction in 2002.
• Number of pages: ~9 pages (standard text as commonly distributed in compact reprints).

Scope

Specifies the method for measuring Rockwell hardness of metallic materials using the standard Rockwell scales (A, B, C, D, E, F, G, H, K). Includes procedural requirements (preliminary and main forces, indentation timing), indenter specifications (diamond cone for some scales; steel balls of specified diameters for others), specimen preparation and dimensional limits, surface condition and spacing of indentations, and conditions for measurement (standard test temperature about 20 °C). The standard is aligned with international practice (ISO 6508 series) and cross‑references verification and apparatus requirements.

Key topics and requirements

• Principle of the Rockwell method: depth‑of‑penetration measurement after application of preliminary and main loads (result expressed on Rockwell scales).
• Defined Rockwell scales and associated loads and measurement ranges (e.g., HRA, HRB, HRC and others with specified preliminary and total forces and hardness ranges).
• Indenter specifications: diamond cone indenter (for A, C, D scales) and calibrated steel ball indenters of controlled diameters (for B, E, F, G, H, K scales) with tight diameter and surface‑finish tolerances.
• Specimen preparation: minimum thickness relative to expected penetration, surface roughness limits (surface roughness requirements specified, typically not exceeding 2.5 µm unless otherwise stated), and avoidance of altered surface properties from preparation.
• Test conditions and timing: nominal test temperature (20 °C), specified durations for application/removal of loads and dwell times; machine protection from vibration and requirements for smooth load application.
• Dimensional rules: minimum spacing between indentations and minimum distance from indent center to edges to avoid interaction or edge effects; correction provisions for measurements on convex cylindrical surfaces.
• Reference to apparatus, verification and calibration: test instruments must comply with apparatus standards and verification procedures (see related GOST/ISO clauses).

Typical use and users

Used by metallurgical and materials test laboratories, quality control departments in metal‑working and heat‑treatment shops, certification bodies, research institutes and manufacturers of hardness testing machines. Typical applications include acceptance testing of heat‑treated parts, hardness mapping, production quality control and material verification.

Related standards

Closely related to ISO 6508 (Rockwell hardness test) series; references in the text include apparatus and indenter standards (for example GOST 23677 for test machines, GOST 9377 for diamond indenters, GOST 3722 for steel balls) as well as other hardness standards (GOST 9012 — Brinell; GOST 2999 — Vickers) and calibration/verification documents.

Keywords

Rockwell, hardness, HRC, HRB, HRA, Rockwell scales, indenter, diamond cone, steel ball, hardness tester, metallic materials, calibration, GOST 9013-59, ISO 6508.

FAQ

Q: What is this standard?

A: GOST 9013-59 is the interstate (GOST) standard that defines the Rockwell hardness testing method for metals — specifying test procedure, scales, loads, indenters and specimen requirements.

Q: What does it cover?

A: It covers the method of measuring Rockwell hardness on the standard Rockwell scales (A, B, C, D, E, F, G, H, K), including indenter types/dimensions, test forces, machine and environmental conditions, sample preparation rules, spacing and edge distances, and corrections for curved surfaces.

Q: Who typically uses it?

A: Metallurgical test laboratories, production quality and inspection teams, heat‑treatment shops, instrument manufacturers and standardization bodies use the standard to ensure consistent, reproducible Rockwell hardness measurements.

Q: Is it current or superseded?

A: Historically GOST 9013-59 has been maintained with amendments and is documented as corresponding to ISO 6508 (the international Rockwell hardness standard). Internationally the ISO 6508 series has been updated (latest editions published by ISO); users should check national/regional catalogs for the currently endorsed Russian standard or any newer GOST/GOST‑R adoption that references ISO 6508: consult official standards registers for the latest status.

Q: Is it part of a series?

A: It is part of the family of hardness testing standards (Rockwell, Brinell, Vickers). In international practice it corresponds to the ISO 6508 series (Rockwell test) and is cross‑referenced with machine verification and indenter calibration documents.

Q: What are the key keywords?

A: Rockwell; hardness; HRA; HRB; HRC; indenters; diamond cone; steel ball; loads; calibration; metallic materials; ISO 6508; GOST.