AS 2403-2008 PDF
Name in English:
St AS 2403-2008
Name in Russian:
Ст AS 2403-2008
Original standard AS 2403-2008 in PDF full version. Additional info + preview on request
Full title and description
AS 2403-2008 — Metallic materials — Sheet and strip — Determination of plastic strain ratio. Specifies a standardised method for measuring the plastic strain ratio (r or r‑value) of flat metallic products (sheet and strip) used to characterise planar anisotropy and formability.
Abstract
AS 2403:2008 defines test-piece geometry, test equipment, measurement techniques (manual and automatic), test conditions and result reporting for determination of the plastic strain ratio (r) for sheet and strip metallic materials. The standard covers measurement methods for single orientations and the calculation of weighted averages and degree of planar anisotropy, and includes provisions for coated materials and non‑homogeneous deformation.
General information
- Status: Current (reconfirmed).
- Publication date: 6 June 2008 (2nd edition).
- Publisher: Standards Australia.
- ICS / categories: ICS 77.040 (Mechanical testing of metals / Metallic materials); Committee MT‑006 (materials testing).
- Edition / version: Second edition (AS 2403-2008); reconfirmed 1 November 2019.
- Number of pages: 8 pages.
Scope
This Standard specifies a method for determining the plastic strain ratio (r) of flat metallic products — sheet and strip. It gives requirements for test-piece preparation, test equipment (including extensometers), procedures for manual and automatic measurement of transverse strain, test conditions (strain rate, temperature), treatment of coated materials, handling of non‑homogeneous plastic strain, and the expression and reporting of results (including r in different orientations, weighted average r and degree of planar anisotropy Δr).
Key topics and requirements
- Definition and significance of plastic strain ratio (r) and derived quantities (weighted average r̄, planar anisotropy Δr).
- Test-piece types, orientation relative to rolling/processing direction (0°, 45°, 90°) and dimensional requirements.
- Required test equipment and extensometer arrangements for accurate transverse strain measurement (manual and automatic methods).
- Test conditions: testing temperature, strain rate, applied strain levels and validity criteria for tests.
- Measurement procedures: gauge location, averaging transverse measurements, treatment of coated materials and non‑homogeneous deformation.
- Calculation, expression and reporting of r values, including notation for strain level and specimen orientation.
- Guidance on invalid tests, specimen inspection (e.g., curling, Lüders bands) and test report contents.
Typical use and users
Used by metallurgical and materials testing laboratories, quality control departments of sheet/strip producers, automotive and aerospace material engineers, research organisations and stamping/forming process engineers. The standard supports material specification, incoming inspection, process control and formability assessment for sheet‑metal manufacturing and forming operations.
Related standards
Standards often used with or referenced by AS 2403 include AS 1391 (tensile testing of metallic materials at ambient temperature), AS 1545 (calibration and grading of extensometers), international equivalents and complements such as ASTM E517 (Standard Test Method for Plastic Strain Ratio r for Sheet Metal), ISO 10113 (r‑value methods) and ISO/EN standards for tensile testing and formability (for example ISO 6892 for tensile tests and forming limit curve methods). AS 2403-1980 is the earlier edition superseded by the 2008 edition.
Keywords
plastic strain ratio; r-value; r̄; planar anisotropy; sheet metal; strip; extensometer; tensile test; formability; metallic materials testing; AS 2403; MT‑006.
FAQ
Q: What is this standard?
A: AS 2403-2008 is the Australian Standard that specifies the method for determining the plastic strain ratio (r) of metallic sheet and strip materials — a key parameter for assessing drawability and forming behaviour.
Q: What does it cover?
A: It covers specimen preparation, test equipment and measurement techniques (manual and automatic transverse strain measurement), test conditions (strain rate, temperature), procedures for coated and non‑homogeneous materials, calculation of r, weighted averages and planar anisotropy, and the format of the test report.
Q: Who typically uses it?
A: Materials testing laboratories, steel and aluminium sheet producers, automotive and aerospace engineers, product designers concerned with deep drawing and stamping, and quality/acceptance inspectors.
Q: Is it current or superseded?
A: AS 2403-2008 is the current edition (second edition); the earlier AS 2403-1980 was superseded. The 2008 edition was reconfirmed in 2019.
Q: Is it part of a series?
A: It is a stand‑alone test method within the suite of metallic materials testing standards administered by Committee MT‑006 and is commonly used alongside other standards for tensile testing, extensometer calibration and formability (for example AS 1391, AS 1545, ASTM E517 and relevant ISO standards).
Q: What are the key keywords?
A: Plastic strain ratio, r-value, r̄ (r-bar), planar anisotropy (Δr), sheet, strip, extensometer, tensile testing, formability, metallic materials testing.