GOST 270-75 PDF

Full title and description

GOST 270-75 — "Rubber. Method of determination of elastic and tensile stress-strain properties". This standard specifies the laboratory method for determining rubber tensile strength, relative elongation at break and stress at a specified elongation for vulcanized rubber and rubber products.

Abstract

GOST 270-75 establishes specimen types and preparation, testing machine and grips, test speeds and temperatures, measurement and calculation procedures (including treatment of results and use of medians), and reporting of tensile and elastic–strength characteristics for rubber. It is aligned with ISO 37:1976 and includes later amendments incorporated into the text.

General information

• Status: Active / in force (действует).
• Publication date: Original designation 1975; introduced into force 01 January 1978; reissued/updated editions and editorial integrations published later (text updates through 2008 reissue and subsequent information updates).
• Publisher: National standards body (originally Gosstandart / Межгосударственный стандарт framework; currently maintained in national standards collections).
• ICS / categories: Rubber and rubber products; construction/manufacturing classification — related ICS grouping for rubber testing and materials (categorizations used in standards catalogues).
• Edition / version: GOST 270-75 with integrated Amendments No.1 (1983), No.2 (1988) and No.3 (1993); later editorial reissues (text updates recorded 2008 and information updates through the 2010s).
• Number of pages: Approximately 12 pages (standard text as commonly published in national collections).

Scope

This standard applies to vulcanized rubber and rubber products and defines the laboratory procedure to determine their elastic and tensile properties: tensile strength at break, relative elongation at break, and stress at a specified elongation. It specifies specimen forms and dimensions, test conditions (including typical traverse speeds and allowable temperature ranges), required apparatus and data processing rules. The method is intended for quality control, specification verification and research of elastomeric compounds.

Key topics and requirements

• Specified specimen types and punching/cutting tools and tolerances for sample preparation.
• Test speeds (typical traverse speeds 500–1000 mm/min) and recommended ambient/test temperatures (room temperature testing; provisions for elevated temperature testing where specified).
• Instrumentation and grips requirements for reproducible tensile testing and extensometry.
• Measured outputs: tensile strength, elongation at break (relative), stress at specified elongation and residual (permanent) deformation after rupture.
• Data treatment rules, use of medians for result processing and tables for correction factors when measuring samples with flashes or tabs.
• References and normative links (e.g., ISO 37:1976 and related GOST references used for complementary procedures).

Typical use and users

Industrial and materials testing laboratories, rubber product manufacturers, quality-control departments, R&D teams developing elastomer formulations, certification bodies and regulatory authorities use this method to verify mechanical and elastic characteristics of rubber compounds and finished rubber components.

Related standards

Normative and related references commonly cited with GOST 270-75 include ISO 37:1976 (rubber tensile testing), ГОСТ 267-73, ГОСТ 269-66, ГОСТ 11358-89 and intergovernmental document ST СЭВ 2594-80; the standard also replaced the earlier ГОСТ 270-64.

Keywords

rubber; tensile test; tensile strength; elongation at break; stress–strain; elastomer; specimen preparation; material testing; GOST 270-75.

FAQ

Q: What is this standard?

A: GOST 270-75 is the national (GOST) method for determining elastic and tensile stress–strain properties of rubber — i.e., how to prepare samples, perform tensile tests and process results for rubber materials.

Q: What does it cover?

A: It covers specimen forms and preparation, testing machine and grips, test speeds and temperatures, measurement procedures (tensile strength, elongation at break, stress at given elongation), data processing (including medians and residual deformation) and reporting.

Q: Who typically uses it?

A: Materials testing and QC laboratories, rubber manufacturers, R&D teams, certification bodies and anyone needing standardized tensile property data for rubber compounds and products.

Q: Is it current or superseded?

A: As published in national standards databases, GOST 270-75 is listed as active (действует) with amendments integrated; it originally entered into force on 01 January 1978 and replaced ГОСТ 270-64. Users should verify the latest national catalog entries for any subsequent replacements or newer harmonized standards.

Q: Is it part of a series?

A: It is part of the family of GOST standards covering rubber and rubber products and references related GOST documents and ISO 37:1976; it is shown in catalogues alongside other material-testing standards for elastomers.

Q: What are the key keywords?

A: Rubber, tensile test, tensile strength, elongation at break, stress–strain, elastomer, specimen, GOST 270-75.