GB/T 15970.3-1995: Corrosion of metals and alloys. Stress corrosion testing. Part 3: Preparation and use of U--bend specimens

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Scope

1.1 This Part of GB/T 15970.3 covers procedures for designing, preparing and using
U-bend test specimens for investigating the susceptibility of a metal to stress corrosion.
The term ''metal" as used in this Part includes alloys.
1.2 U-bend specimens may be used to test a variety of product forms. They are used
principally for sheet, plate or flat extruded material, which conveniently provides flat
specimens of rectangular cross-section, but may also be employed for wire or rod, or
for machined specimens of circular cross-section. They can also be used for parts
joined by welding.
1.3 The U-bend test is frequently used to establish whether a metal is susceptible to
stress corrosion cracking in a given environment. It is used in laboratories to screen
materials for susceptibility for specific applications and in use environments to assess
the risk of failure.
1.4 The principal advantages of the test are its simplicity and its consequent
adaptability for use in plant. A disadvantage is that stresses cannot be quantified with
accuracy and if this is desired an alternative method of stressing should be used.

Basic Data

Standard ID	GB/T 15970.3-1995 (GB/T15970.3-1995)
Description (Translated English)	Corrosion of metals and alloys. Stress corrosion testing. Part 3: Preparation and use of U--bend specimens
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H25
Classification of International Standard	77.040.10
Word Count Estimation	5,533
Date of Issue	12/25/1995
Date of Implementation	6/1/1996
Adopted Standard	ISO 7539-3-1989, IDT
Issuing agency(ies)	State Bureau of Technical Supervision
Summary	This standard applies to study stress corrosion sensitivity of the metal U-shaped sample design, preparation and use of the program.