ASME SB163-2015 pdf download.SPECIFICATION FOR SEAMLESS NICKEL AND NICKEL ALLOY CONDENSER AND HEAT-EXCHANGER TUBES.
5. Chemical Composition 5.1 The material shall conform to the composition lim- its specified in Table 1. 5.2 If a product (check) analysis is performed by the purchaser, thematerialshall conformto the product(check) analysis per Specification B 880.
6. Mechanical Properties and Other Requirements 6.1 Mechanical Properties—The material shall con- form to the mechanical properties specified in Table 3. 6.2 Hardness—When annealed ends are specified for tubing in the stress-relieved condition (see Table 3), the hardness of the ends after annealing shall not exceed the values specified in Table 3. 6.3 Flare—A flare test shall be made on one end of 1% of the number of finished tube lengths from each lot. For less than 100 tubes in a lot, a flare test shall be made on one end of one tube length in the lot. In the case of stress relieved tubing with annealed ends, the test shall be made prior to, or subsequent to, annealing of the ends at the option of the manufacturer. 6.3.1 The flare test shall consist of flaring a test specimen with an expanding tool having an included angle of 60° until the specified outside diameter has been increased by 30%. The flared specimen shall not exhibit cracking through the wall.
7. Dimensions and Permissible Variations 7.1 Outside Diameter and Wall Thickness —The per- missible variations in the outside diameter and wall thick- ness of tube shall not exceed those prescribed in Table 4 as applicable. (See also Table 5 and Table 6.) 7.2 Length —When tube is ordered cut-to-length, the length shall not be less than that specified, but a variation of plus 1 ⁄ 8 in. (3.2 mm) will be permitted, except that for lengths over30 ft(9.1 m), avariation ofplus 1 ⁄ 4 in. (6.4 mm) will be permitted. 7.3 Straightness—Material shall be reasonably straight and free of bends or kinks.
11.1.2 Whenever possible, all tubes shall be tested in full tubular size. When testing in full tubular size is not possible, longitudinal strip specimens, or the largest possible round specimen, shall be used. In the event of disagreement when full tubular testing is not possible, a longitudinal strip specimen with reduced gage length as contained in Test Methods E 8 shall be used. 11.1.3 In the case of stress-relieved tubes furnished with annealed ends, the tension test shall be made on the stress-relieved tubes prior to annealing the ends. 11.2 Hardness Test: 11.2.1 Stress-RelievedTubing with AnnealedEnds— The hardness test may be made on the inside of the tube near the end or on a specimen cut from the end, at the option of the manufacturer. The test shall be made on the inside of the specimen.ASME SB163 pdf download.