ASME SA-370 pdf free download

ASME SA-370-2019 pdf free download.TEST METHODS AND DEFINITIONS FOR MECHANICAL TESTING OF STEEL PRODUCTS.
3. General Precautions
3.1 Certain methods of fabrication, such as bending. forming. and welding, or operations involving heating. may affect the properties of the material under test. Therefore, the product specifications cover the stage of manufacture at which mechanical testing is to be performed. The properties shown by testing prior to fabrication may not necessarily be representative of the prxiuct after it has been completely fabricated.
3.2 Improper machining or preparation of test specimens may give erroneous results. Care should be exercised to assure good workmanship in machining. Improperly machined specimens should be discardcd and other specimens substituted.
3.3 Flaws in the specimen may also affect results. If any test specimen develops flaws, the retest provision of the applicable product specification shall govern.
3.4 If any test specimen fails because of mechanical reasons such as failure of testing equipment or improper specimen preparation, it may be discarded and another specimen taken.
4. Orientation of Test Specimens
4.1 The terms ‘longitudinal test” and “transverse test” are used only in material specifications for wrought products and are not applicable to castings. When such reference is made to a test coupon or test specimen, the following definitions apply:
4.1.1 Longitudinal Test. 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. 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 extcnsion (Fig. I. Fig. 2a, and 2h).
4.1.2 Tran.cverse Test, unless specifically defined otherwise, signifies that the lengthwise axis of the specimen is at right angles to the direction of the greatest extension of the steel during rolling or forging. The stress applied to a transverse tension test specimen is at right angles to the greatest extension, and the axis of the fold of a transverse bend test specimen is parallel to the greatest extension (Fig. I).
4.2 The terms “radial test” and “tangential test” are used in material specifications for some wrought circular products and are not applicable to castings. When such reference is made to a test coupon or test specimen. the following definitions apply:
4.2.1 Radial Test, unless specifically defined otherwise, signifies that the lengthwise axis of the specimen is perpendicular to the axis of the produ and coincident with one of the radii of a circle drawn with a point on the axis of the product as a center (Fig. 2a).
4.2.2 Tangential Test, unless specifically defined otherwise, signifies that the lengthwise axis of the specimen is perpen4i ular to a plane containing the axis of the product and tangent to a circle drawn with a point on the axis of the product as a center (Fig. 2a. 2b. 2c, and 2d).
TENSION TEST
5. flescription
5.1 The tension test related to the mechanical testing of steel products subjects a machined or full-section sped- men of the material under examination to a measured load sufficient to cause rupture. 11w resulting properties sought arc defined in Terminology E 6.
5.2 In general, the testing equipment and methods are given in Test Methods Ii 8. However, there are certain exceptions to Test Methods E 8 practices in the testing of’ steel, and these are covered in these test methods.
6. Terminology
6.1 For definitions of terms pertaining to tension testing. including tensile strength, yield point, yield strength.ASME SA-370 pdf download.