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Description / Abstract:
These test methods cover procedures and definitions for the
mechanical testing of steel, stainless steels, and related alloys.
The various mechanical tests herein described are used to determine
properties required in the product specifications. Variations in
testing methods are to be avoided and standard methods of testing
are to be followed to obtain reproducible and comparable results.
In those cases in which the testing requirements for certain
products are unique or at variance with these general procedures,
the product specification testing requirements shall control.
The values stated in SI (MPa) units are to be regarded as the
standard.
When this document is referenced in a metric product
specification, the yield and tensile values may be determined in
inch-pound (ksi) units then converted into SI (MPa) units. The
elongation determined in inch-pound gauge lengths of 2 or 8 in. may
be reported in SI unit gauge lengths of 50 or 200 mm, respectively,
as applicable. Conversely, when this document is referenced in an
inch-pound product specification, the yield and tensile values may
be determined in SI units, and then converted into inch-pound
units. The elongation determined in SI unit gauge lengths of 50 or
200 mm may be reported in inch-pound gauge lengths of 2 or 8 in.,
respectively, as applicable.
Attention is directed to R 18 when there may be a need for
information on criteria for evaluation of testing laboratories.
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.