ASTM D412-16 (2021) rus PDF

Full title and description

Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension (ASTM D412-16(2021)). This document defines the standardized procedures, specimen types and test conditions used to determine tensile properties of vulcanized rubbers and thermoplastic elastomers, including tensile strength, elongation, tensile stress at a given elongation and tensile set.

Abstract

ASTM D412-16(2021) specifies two primary tensile test methods—Method A (dumbbell and straight-section specimens) and Method B (cut ring specimens)—and provides requirements for specimen preparation, conditioning, test equipment, extension rates, measurement of force and elongation, and calculation of tensile properties and tensile set. The standard is intended for vulcanized thermoset rubbers and thermoplastic elastomers and is widely used for quality control, R&D and material specification.

General information

• Status: Active (current edition designation D412-16 with 2021 reapproval/revision D0412-16R21).
• Publication date: Approved May 1, 2021 (published 2021).
• Publisher: ASTM International.
• ICS / categories: 83.060 (Rubber).
• Edition / version: ASTM D412-16(2021) — edition originally designated 2016 with the 2021 reapproval/revision (D0412-16R21).
• Number of pages: Typically listed as 14 pages in standard listings (some resellers may show alternate formatting/page counts).

Scope

These test methods cover procedures to evaluate tensile (tension) properties of vulcanized thermoset rubber and thermoplastic elastomers. The standard is not applicable to hard, low-elongation materials such as ebonite. It prescribes two methods (A and B), measurement systems (SI and non‑SI units treated independently), specimen geometries, conditioning, test speeds, and reporting requirements needed to obtain comparable tensile property data.

Key topics and requirements

• Test methods: Method A — dumbbell and straight-section specimens; Method B — cut ring specimens (results from the two methods are not identical).
• Measured properties: tensile strength, elongation at break (ultimate elongation), tensile stress at a given elongation, tensile set (residual deformation), and yield point where applicable.
• Specimen preparation and geometry: defined specimen types (several dumbbell types and ring specimens) and precise dimensional requirements to ensure repeatability.
• Test conditions: controlled temperature and humidity, specified extension rates, use of calibrated tensile testing machines and preferably extensometers for accurate elongation measurement.
• Units and reporting: SI and non‑SI units are both normative but must be used independently (do not mix systems).
• Application notes: tensile properties depend on material and test conditions; results are comparable only when tests are performed under the same conditions.

Typical use and users

Common users include polymer and rubber laboratories, quality-control technicians, R&D engineers, materials scientists, test laboratories and manufacturers of seals, gaskets, hoses, tubing, molded elastomer parts and thermoplastic elastomer (TPE) components. The standard is used for specification compliance, batch acceptance testing, material comparison and failure analysis.

Related standards

Standards commonly used alongside or referenced by D412 include ASTM D2240 (rubber hardness), ASTM D624 (tear strength), ASTM D573 (thermal aging of rubber), ASTM D1566 (vocabulary) and other physical-test methods for elastomers. National standards and regulatory documents (including some GOST/R standards) may reference ASTM D412 or recommend using equivalent translated procedures where appropriate.

Keywords

tensile test, tensile strength, elongation, tensile set, vulcanized rubber, thermoplastic elastomer (TPE), dumbbell specimen, ring specimen, extension rate, ASTM D412-16(2021).

FAQ

Q: What is this standard?

A: ASTM D412-16(2021) is the ASTM International standard that defines test methods for measuring tensile (tension) properties of vulcanized rubber and thermoplastic elastomers, including specimen types, test conditions and data reporting.

Q: What does it cover?

A: It covers two tensile test methods (Method A — dumbbell/straight specimens; Method B — cut ring specimens), specimen preparation, conditioning, apparatus and procedures to obtain tensile strength, elongation, tensile stress at specified elongation and tensile set; it also specifies unit usage and reporting conventions.

Q: Who typically uses it?

A: Test laboratories, manufacturers of rubber and elastomer products, R&D groups, materials engineers and quality control personnel use D412 for material characterization, specification compliance and comparative testing.

Q: Is it current or superseded?

A: The document is listed as active in its current designation ASTM D412-16 with the 2021 reapproval/revision (D0412-16R21). Users should always verify they are using the most recent active version via ASTM International before testing.

Q: Is it part of a series?

A: D412 is part of the body of ASTM standards on rubber and rubber‑like materials maintained by Committee D11; it is often used together with other elastomer test methods and specifications (hardness, tear, aging, vocabulary, etc.).

Q: What are the key keywords?

A: Tensile, tensile strength, elongation, tensile set, vulcanized rubber, thermoplastic elastomer, dumbbell specimen, ring specimen, extension rate, ASTM D412.