• There are no items in your cart

ASTM G 39 : 1999 : R2016

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Practice for Preparation and Use of Bent-Beam Stress-Corrosion Test Specimens
Available format(s)

Hardcopy , PDF

Superseded date

05-18-2021

Language(s)

English

Published date

05-24-2016

CONTAINED IN VOL. 03.02, 2016 Defines procedures for designing, preparing, and using bent-beam stress-corrosion specimens.

1.1This practice covers procedures for designing, preparing, and using bent-beam stress-corrosion specimens.

1.2Different specimen configurations are given for use with different product forms, such as sheet or plate. This practice is applicable to specimens of any metal that are stressed to levels less than the elastic limit of the material, and therefore, the applied stress can be accurately calculated or measured (see Note 1). Stress calculations by this practice are not applicable to plastically stressed specimens.

Note 1:It is the nature of these practices that only the applied stress can be calculated. Since stress-corrosion cracking is a function of the total stress, for critical applications and proper interpretation of results, the residual stress (before applying external stress) or the total elastic stress (after applying external stress) should be determined by appropriate nondestructive methods, such as X-ray diffraction (1).2

1.3Test procedures are given for stress-corrosion testing by exposure to gaseous and liquid environments.

1.4The bent-beam test is best suited for flat product forms, such as sheet, strip, and plate. For plate material the bent-beam specimen is more difficult to use because more rugged specimen holders must be built to accommodate the specimens. A double-beam modification of a four-point loaded specimen to utilize heavier materials is described in 10.5.

1.5The exposure of specimens in a corrosive environment is treated only briefly since other practices deal with this aspect, for example, Specification D1141, and Practices G30, G36, G44, G50, and G85. The experimenter is referred to ASTM Special Technical Publication 425 (2).

1.6The bent-beam practice generally constitutes a constant strain (deflection) test. Once cracking has initiated, the state of stress at the tip of the crack as well as in uncracked areas has changed, and therefore, the known or calculated stress or strain values discussed in this practice apply only to the state of stress existing before initiation of cracks.

1.7The values stated in SI units are to be regarded as standard. The inch-pound values in parentheses are provided for information.

1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (For more specific safety hazard information see Section 7 and 12.1.)

Committee
G 01
DocumentType
Standard Practice
Pages
8
ProductNote
Reconfirmed 2016
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM G 103 : 1997 : R2016 Standard Practice for Evaluating Stress-Corrosion Cracking Resistance of Low Copper 7XXX Series Al-Zn-Mg-Cu Alloys in Boiling 6 % Sodium Chloride Solution
ASTM G 30 : 1997 : R2016 Standard Practice for Making and Using U-Bend Stress-Corrosion Test Specimens
ASTM G 111 : 1997 : R2018 Standard Guide for Corrosion Tests in High Temperature or High Pressure Environment, or Both
ASTM G 41 : 1990 : R2018 Standard Practice for Determining Cracking Susceptibility of Metals Exposed Under Stress to a Hot Salt Environment
ASTM G 58 : 1985 : R2015 Standard Practice for Preparation of Stress-Corrosion Test Specimens for Weldments
ASTM G 52 : 2020 Standard Practice for Exposing and Evaluating Metals and Alloys in Surface Seawater

ASTM D 1141 : 1998 : R2008 Standard Practice for the Preparation of Substitute Ocean Water
ASTM D 1141 : 1998 : EDT 1 Standard Practice for the Preparation of Substitute Ocean Water
ASTM G 85 : 2011 : REDLINE Standard Practice for Modified Salt Spray (Fog) Testing
NACE TM 01 77 : 2016 LABORATORY TESTING OF METALS FOR RESISTANCE TO SULFIDE STRESS CRACKING AND STRESS CORROSION CRACKING IN H[2]S ENVIRONMENTS
ASTM D 1141 : 1998 : R2013 Standard Practice for the Preparation of Substitute Ocean Water
ASTM G 85 : 1998 Standard Practice for Modified Salt Spray (Fog) Testing
ASTM D 1141 : 1998 : R2003 Standard Practice for the Preparation of Substitute Ocean Water

View more information
US$75.00
Excluding Tax where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.