ASTM A370-2020 pdf free download

ASTM A370-2020 pdf free download.Standard Test Methods and Definitions for Mechanical Testing of Steel Products
1. Scope
1.1 These test methods2 cover procedures and definitions for the mechanical testing of steels, 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.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 When these test methods are 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 these test methods are referenced in an inch-pound product specification, the yield and tensile values may be determined in SI units 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. 1.5.1 The specimen used to determine the original units must conform to the applicable tolerances of the original unit system given in the dimension table not that of the converted tolerance dimensions. NoTE 1- -This is due to the specimen SI dimensions and tolerances being hard conversions when this is not a dual standard. The user is directed to Test Methods A1058 if the tests are required in SI units. 1.6 Attention is directed to ISO/IEC 17025 when there may be a need for information on criteria for evaluation of testing laboratories. 1.7 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 appro- priate safety, health, and environmental practices and deter- mine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions:3.1.1 For definitions of terms pertaining to mechanical testing of steel products not otherwise listed in this section, reference should be made to Terminology E6 and Terminology A941. 3.2 Definitions of Terms Specific to This Standard: 3.2.1 longitudinal test, n- -unless specifically defined otherwise, signifies that the lengthwise axis of the specimen is parallel to the direction of the greatest extension of the steel during rolling or forging. 3.2.1.1 Discussion- The stress applied to a longitudinal tension test specimen is in the direction of the greatest extension, and the axis of the fold of a longitudinal bend test specimen is at right angles to the direction of greatest extension (see Fig. 1, Fig. 2a, and Fig.2b). 3.2.2 radial test, n- -unless specifically defined otherwise, signifies that the lengthwise axis of the specimen is perpen- dicular to the axis of the product and coincident with one of the radi of a circle drawn with a point on the axis of the product as a center (see Fig. 2a). 3.2.3 tangential test, n- -unless specifically defined otherwise, signifies that the lengthwise axis of the specimen perpendicular to a plane containing the axis of the product and tangent to a circle drawn with a point on the axis of the . productas a center (see Fig. 2a, Fig. 2b, Fig. 2c, and Fig. 2d). 3.2.4 transition temperature, n- for specification purposes, the transition temperature is the temperature at which the designated material test value equals or exceeds a specified minimum test value.