ASME SA-210-2019 pdf free
ASME SA-210-2019 pdf free.SPECIFICATION FOR SEAMLESS MEDIUM-CA RBON STEEL BOILER AND SUPERH EATER TUBES.
8.2 When a grade is ordered undcr this specification. supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade in Table 1 is not permitted.
9. Product Analsis
9.1 When requested on the purchase order, a product analysis shall be itiade by the supplier from one lube or billet per heat. The chemical composition thus determined shall conform to the requirements specified.
9.2 If the original test for product analysis fails. retests of two additional billets or tubes shall be made. l3oth retcsts for the elements in question shall meet the requirements of the specification: otherwise, all remaining material in the heat or lot (soLe 2) shall be rejected or, at the option of the producer. each billet or tube may be individually tested for acceptance. Billets or tubes which do not meet the requirements of the specification shall be rejected.
NOTE 2— For flattening and flaring requirements. the term lot” applies to all tubes prior to cutting o4’ the same nominal size and wall thiotncss which are produced from the same heat of steel. When final heat trealluetg is in a batch-type lulnace. a lot shall include only those tubes of the same size and from the same heat which are heat treated in the same furnace charge. When the tinal heat treatment is in a continuous furnace, the number of tubes of thc same size and from the sanle heat in a lot shall be determined from the size of the tubes as prescribed in Table 2.
NOTE 3 — Foe tcnsik and hirdncs’. test requirements, the term “kw” applies to all tube’s prior to cutting, of the same nominal diameter and wall thickness which are produced from the same heat of steel. When final heat treatment is in a batch-type furnace, a lot shall include only those tubes of the same size and the sante heat which are heat treated in the same furnace charge. When the final heal trealntenl is in a continuous furnace, a lot shall include all tubes of the same size and heat, heat treated in the same foenace at the same Iempcralure. time at heat, and furnace speed.
10. Tensile Requiremnts
10.1 The material shall conform to the requirements as to tensile properties.
12. Mechanical Tests Required
12.1 Ten.ion Ted One tension test shall he made on a specinn for lots of not more than 50 tubes. Tension tests shall he made on specimens from Iwo tubes for lots of more than 50 tubes (Note 3).
12.2 Flattening Te:—One flattening test shall be made on specimens from each end of one finished tube from each lot (Note 2). hut not the one used for the flaring test. Tears or breaks occurring at the 12 or 6 o’clock positions on Grade C tubing with sizes of 2.375 in. 160.3 mml in outside diameter and smaller shall not be considered a basis for rejection.
12.3 Flaring Test — One flaring test shall be made on specimens from each end of the one finished tube from each lol(Note 2.) but not the one used for the flattening test.
12.4 Hardness Test— Bnnell or Rockwell hardness test shall he made on specimens from two tubes from each lot tNotc 3).
12.5 Hydrostatic or Noncksiructive Liectric Test — Each tube shall be subjected to the hydrostatic, or. instead of this lest, a nondestructive electric test may be used when specified by the purchaser.
13. Forming Operations
13.1 When inserted in the boiler, tubes shall stand expanding and beading without showing cracks or flaws. When properly manipulated. superheater tubes shall stand all forging, welding and bending operations necessary for application without developing defects.ASME SA-210 pdf free download.
