scope:

This Standard specifies the method of tensile stress relaxation test in which the relaxation [the change of test force (stress) over time] of tensile test force (stress) for metallic materials is measured under the condition of a constant tensile total strain and of a constant temperature.

NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 15630-3 : 2010 Steel for the reinforcement and prestressing of concrete - Test methods - Part 3 : Prestressing steel (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.

Warning Persons carrying out tests based on this Standard should be familiar with normal laboratory practice. This Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this Standard to establish appropriate safety and health practices.