ASME SA-1016-SA-1016M:2021 pdf free download – Standard Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
6.1 Chemical Analysis- Samples for chemical analysis, and method of analysis, shall be in accordance with Test Methods, Practices, and Terminology A751.
6.2 Heat Analysis- An analysis of each heat of steel shall be made by the steel manufacturer to determine the percentages of the elements specified. If secondary melting processes are employed, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The chemical composition thus determined, or that determined from a product analysis made by the tubular product manufacturer, shall conform to the requirements speci- fied in the product specification.
6.2.1 For steels ordered under product specifications refer- encing this specification of general requirements, the steel shall not contain an unspecified element, other than nitrogen for stainless steels, for the ordered grade to the extent that the steel conforms to the requirements of another grade for which that element is a specified element having a required minimum content. For this requirement, a grade is defined as an alloy described individually and identified by its own UNS designa- tion in a table of chemical requirements within any specifica- tion listed within the scope as being covered by this specifi- cation.
6.3 Product Analysis- Product analysis requirements and options, if any, shall be as contained in the product specifica- tion.
19.1 A section of tube not less than 2/z in. [60 mm] in length for seamless tubes and not less than 4 in. [100 mm] in length for welded tubes and for heavily cold-worked tubes shall be flattened cold between parallel plates in two steps. For welded tubes, the weld shall be placed 90° from the direction of the applied force (at a point of maximum bending). During the first step, which is a test for ductility, no cracks or breaks, except as provided for in 19.4, on the inside, outside, or end surfaces shall occur in seamless tubes, or on the inside or outside surfaces of welded tubes and heavily cold-worked tubes, until the distance between the plates is less than the value of H calculated by the following equation
20.1 A section 4 in. [100 mm] in length of finished welded tubing in sizes down to and including % in. [12.7 mm] in outside diameter shall be split longitudinally 90° on each side of the weld and the sample opened and fattened with the weld at the point of maximum bend. There shall be no evidence of cracks or lack of penetration or overlaps resulting from flash removal in the weld.
21. Reverse Bend Test
21.1 A section 4 in. [100 mm] minimum in length shall be split longitudinally 90° on each side of the weld. The sample shall then be opened and bent around a mandrel with a maximum thickness of four times the wall thickness, with the mandrel parallel to the weld and against the original outside surface of the tube. The weld shall be at the point of maximum bend. There shall be no evidence of cracks or of overlaps resulting from the reduction in thickness of the weld area by cold working. When the geometry or size of the tubing make it difficult to test the sample as a single piece, the sample may be sectioned into smaller pieces provided a minimum of 4 in. of weld is subjected to reverse bending.
21.2 The reverse bend test is not applicable when the wall is 10 % or more of the specified outside diameter, or the wall thickness is 0.134 in. [3.4 mm] or greater, or the outside diameter is less than 0.375 in. [9.5 mm]. Under these conditions, the reverse fattening test shall apply.