SB 515 - SPECIFICATION FOR WELDED UNS N08120, UNS N08800,...

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Unformatted text preview: SPECIFICATION FOR WELDED UNS N08120, UNS N08800, UNS N08810, AND UNS N08811 ALLOY TUBES SB-515 01 (Identical with ASTM Specification B 515-95, except that certification has been made mandatory.) 1. Scope 3.1.4 Length (random or specific), 3.1.5 Class, 3.1.6 ASTM Designation, 3.1.7 Product Analysis — State if required, 3.1.8 Certification — Certification and a report of test results are required, and 3.1.9 Purchaser Inspection — State which tests or inspections are to be witnessed, if any. 1.1 This specification covers welded UNS N08120, UNS N08800, UNS N08810, and UNS N08811 alloy boiler, heat exchanger, and condenser tubes for general corrosion resisting and low or high-temperature service. 1.2 This specification covers tubes 1⁄8 to 5 in. (3.18 to 127 mm), inclusive, in outside diameter and 0.015 to 0.500 in. (0.38 to 12.70 mm), inclusive, in wall thickness. Table 2 of Specification B 751 lists the dimensional requirements of these sizes. Tubes having other dimensions may be furnished provided such tubing complies with all other requirements of this specification. 1.3 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only. 4. Materials and Manufacture 2. Referenced Documents 2.1 ASTM Standard: B 751 Specification for General Requirements for Nickel and Nickel Alloy Seamless and Welded Tube 4.1 Tube shall be made from flat-rolled alloy by an automatic welding process with no addition or filler metal. Subsequent to welding and prior to final annealing, the material shall be cold-worked in either the weld metal only or both weld and base metal. 4.2 Tube shall be furnished with oxide removed. When bright annealing is used, descaling is not necessary. 3. Ordering Information 5. Chemical Composition 3.1 Orders for material to this specification should include the following information: 3.1.1 Quantity (feet or number of lengths), 3.1.2 UNS Number, 3.1.3 Size (outside diameter minimum or average wall thickness), 652 5.1 The material shall conform to the composition limits specified in Table 1. One test is required for each lot as defined in Specification B 751. 5.2 If a product analysis is performed, it shall meet the chemistry limits prescribed in Table 1, subject to COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services PART B — NONFERROUS MATERIAL SPECIFICATIONS TABLE 1 CHEMICAL REQUIREMENTS Composition Limits, % Element Nickel, min Nickel, max Chromium, min Chromium, max Iron, min Manganese, max Carbon, min Carbon, max Copper, max Silicon, max Sulfur, max Aluminum, minB Aluminum, max Titanium, minB Titanium, max Columbium, min Columbium, max Molybdenum, max Phosphorus, max Tungsten, max Cobalt, max Nitrogen, min Nitrogen, max Boron, max A B SB-515 Alloy N08120 35.0 39.0 23.0 27.0 remainder 1.5 0.02 0.10 0.50 1.0 0.03 ... 0.40 ... 0.20 0.4 0.9 2.50 0.040 2.50 3.0 0.15 0.30 0.010 Alloy N08800 30.0 35.0 19.0 23.0 39.5A 1.5 ... 0.10 0.75 1.0 0.015 0.15 0.60 0.15 0.60 ... ... ... ... ... ... ... ... ... Alloy N08810 30.0 35.0 19.0 23.0 39.5A 1.5 ... 0.05 to 0.10 0.75 1.0 0.015 0.15 0.60 0.15 0.60 ... ... ... ... ... ... ... ... ... Alloy N08811 30.0 35.0 19.0 23.0 39.5A 1.5 ... 0.06 to 0.10 0.75 1.0 0.015 0.15 0.60 0.15 0.60 ... ... ... ... ... ... ... ... ... Iron shall be determined arithmetically by difference. Alloy UNS N08811: Al + Ti, 0.85–1.20. TABLE 2 MECHANICAL PROPERTY REQUIREMENTS Condition (Temper) Annealed Annealed Annealed Tensile Strength, min, psi (MPa) 90,000 (621) 75,000 (520) 65,000 (450) Yield Strength, 0.2% Offset, min, psi (MPa) 40,000 (276) 30,000 (205) 25,000 (170) Elongation in 2 in. or 50 mm, min, % 30 30 30 Alloy UNS N08120 UNS N08800 UNS N08810 and UNS N08811 the analysis tolerances specified in Table 6 of Specification B 751. 6.2 Grain Size — A transverse sample representing the full-wall thickness of annealed alloys UNS N08120, UNS N08810, and UNS N08811 shall conform to an average grain size of ASTM No. 5 or coarser. 6.3 Flattening Test — A flattening test shall be made on each end of one tube per lot. Superficial ruptures resulting from surface imperfections shall not be cause for rejection. 653 6. Mechanical and Other Properties 6.1 Mechanical Properties — The material shall conform to the requirements for mechanical properties presecribed in Table 2. One test is required for each lot as defined in Specification B 751. COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services SB-515 2001 SECTION II 6.4 Flange Test — A flange test shall be made on each end of one tube per lot. 6.5 Nondestructive Test Requirements: 6.5.1 Class 1 — Each piece of each lot shall be subject to one of the following four tests: hydrostatic, pneumatic (air underwater), eddy current, or ultrasonic. 6.5.2 Class 2 — Each piece in each lot shall be subjected to a leak test and an electric test as follows: 6.5.2.1 Leak Test — Hydrostatic or pneumatic (air underwater). 6.5.2.2 Electric Test — Eddy current or ultrasonic. 6.6 The manufacturer shall have the option to test Class 1 or Class 2 and select the nondestructive test methods, if not specified by the purchaser. 7. General Requirements 7.1 Material furnished under this specification shall conform to the applicable requirements of the current edition of Specification B 751 unless otherwise provided herein. 8. Certification 8.1 A manufacturer’s certification shall be furnished to the purchaser stating that the material has been manufactured, tested, and inspected in accordance with this specification, and that the test results on representative samples meet specification requirements. A report of the test results shall be furnished. 9. Keywords 9.1 UNS N08120; UNS N08800; UNS N08810; UNS N08811; welded tube 654 COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services ...
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This note was uploaded on 10/04/2010 for the course ENGINEERS 22453175 taught by Professor Heydari during the Spring '08 term at Miami University.

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