GB/T 38684-2020 Active National standards

GB/T 38684-2020 Metallic materials—Sheet and strip—Biaxial stress-strain curve by means of bulge test—Optical measuring systems

Publish Date: 2020-03-31 Implement Date: 2020-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 38684-2020

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: \n Test methods for the mechanical properties of metals

ICS Name: Mechanical testing of metal materials

Publish Date: 2020-03-31

Implement Date: 2020-10-01

Pages: 22 pages

Scope

This standard specifies the symbols and explanations, principles, test equipment, optical measurement system, samples, test procedures, evaluation methods of vertex curvature deformation and strain for the billet forming test of thin sheets and strips of metal materials. It also describes the calculation of the biaxial stress-strain curve and the test report.
This standard is applicable to metal thin sheets and strips with a thickness of less than 3 mm, which are used to determine their biaxial stress-strain curves during pure billet forming processes.
Note: The term "biaxial stress-strain curve" in this standard is an abbreviation. What is measured in the test is the "biaxial true stress-true strain curve".