ISO 20032:2013 PDF

Name: ISO 20032:2013 — Method for evaluation of tensile properties of metallic superplastic materials
SKU: ISO 20032:2013
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Method for evaluation of tensile properties of metallic superplastic materials

Название (английский):

ISO 20032:2013

Method for evaluation of tensile properties of metallic superplastic materials

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 2 августа 2013 г.
Издание:: ISO IS 20032 edition 2 version 1
ICS:: 77.040.10

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Описание (английский):

ISO 20032:2013 specifies a method for evaluating the tensile properties of metallic superplastic materials which exhibit what is called "Fine-Grained Superplasticity", without significant work-hardening or dynamic microstructure evolution, by means of a tensile test at constant cross-head velocity, for flat-form test pieces, without an extensometer attached.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 20032:2013 specifies a standardized tensile test method for evaluating the tensile properties of metallic superplastic materials that display fine-grained superplasticity without significant work‑hardening or dynamic microstructure evolution. The test uses flat-form test pieces (S‑type or R‑type) strained at a constant cross‑head velocity and is performed without an extensometer. Key outputs include superplastic elongation (A), flow stress (σf), and the strain‑rate sensitivity exponent (m‑value) - parameters essential for superplastic forming and materials characterization.

Key Topics and Requirements

Scope: Intended for fine‑grained superplastic metals tested at elevated temperatures using constant cross‑head velocity; extensometer-free measurements on flat specimens.

Test pieces: Two specimen geometries are defined:

S‑type (suitable for lower total strains; gauge and parallel‑side portions specified).
R‑type (suitable for high‑strain testing since strain concentrates in a central arc‑shaped R portion).
Dimensional tolerances align with ISO 6892‑1.

Apparatus:

Testing machine must conform to ISO 7500‑1 and provide constant cross‑head velocity.
Clamping devices must resist plastic deformation at test temperature and apply only axial load (minimal pre‑tension to maintain straightness).
Furnace with controlled, uniform temperature over the gauge length; allowable temperature stability varies with temperature bands (tight tolerances at moderate temperatures, agreed limits at extremes).
Thermometry via thermocouple per IEC 60584 (or equivalent) to measure specimen temperature accurately.
Controlled atmosphere considerations and pressure compensation for force readings if applicable.

Procedure highlights:

Clamping method to avoid off‑axis loads.
Temperature measurement directly on the test piece.
Dimensional measurement after testing for elongation and section area changes.
Methods to determine m‑value and flow stress, including procedures specific to the R‑type specimen.

Applications and Users

Who uses ISO 20032: materials engineers, metallurgists, test lab personnel, quality managers, and researchers involved in:

Superplastic forming process development (aerospace, automotive, precision forming).
Material selection and qualification for high‑temperature forming.
R&D on fine‑grained alloys and superplastic behavior.

Practical benefits: enables reproducible evaluation of superplastic capacity, strain‑rate sensitivity, and flow behavior needed for forming simulations, process optimization, and specification compliance.

Related Standards

ISO 6892‑1, ISO 6892‑2 (tensile testing at room and elevated temperature)

ISO 7500‑1 (verification of testing machines)

ISO 80000‑1 (quantities and units)

IEC 60584‑1/2 (thermocouple reference tables and tolerances)

Keywords: ISO 20032:2013, tensile properties, metallic superplastic materials, fine‑grained superplasticity, superplastic elongation, m‑value, constant cross‑head velocity, S‑type test piece, R‑type test piece, elevated temperature testing.

ISO 20032:2013 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications and Users

Related Standards

Технические детали

SIST EN ISO 6892-1:2020

Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1:2019)

SIST EN ISO 7500-1:2018

Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1: Tension/compr…

IEC 60584-3:2021

Thermocouples - Part 3: Extension and compensating cables - Tolerances and identification system

ISO 20032:2007

Method for evaluation of tensile properties of metallic superplastic materials

BS EN ISO 6892-2:2026

Metallic materials. Tensile testing - Method of test at elevated temperature

SIST EN ISO 80000-11:2020/A1:2026

Quantities and units - Part 11: Characteristic numbers - Amendment 1 (ISO 80000-11:2019/Amd 1:2025)

IEC 60584-1:2013

Thermocouples - Part 1: EMF specifications and tolerances