GB/T 36027-2018 PDF EnglishUS$155.00 · In stock · Download in 9 seconds
GB/T 36027-2018: Austenitic stainless-steel bars for nuclear power plants Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 36027-2018: Austenitic stainless-steel bars for nuclear power plants---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT36027-2018GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.20 H 44 Austenitic stainless steel bars for nuclear power plants ISSUED ON: MARCH 15, 2018 IMPLEMENTED ON: DECEMBER 01, 2018 Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Ordering content ... 7 4 Dimensions, shape, weight ... 8 5 Technical requirements ... 8 6 Test methods ... 12 7 Inspection r ules ... 13 8 Packaging, marking and quality certificate ... 15 Annex A (informative) Comparison of domestic and foreign designations ... 17 Austenitic stainless steel bars for nuclear power plants1 ScopeThis Standard specifies the ordering content, dimensions, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of austenitic stainless steel bars for main equipment of nuclear power plants. This Standard applies to hot-rolled and forged austenitic stainless steel bars with a diameter of 10 mm~260 mm for use in level 1, 2 and 3 equipment in nuclear power plants.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 223.3, Methods for chemical analysis of iron, steel and alloy. The diantipyryl methane phosphomolybdate gravimetric method for the determination of phosphorus content GB/T 223.5, Steel and iron -- Determination of acid-soluble silicon and total silicon content -- Reduced molybdosilicate spectrophotometric method GB/T 223.11, Iron, steel and alloy -- Determination of chromium content -- Visual titration or potentiometric titration method GB/T 223.16, Methods for chemical analysis of iron, steel and alloy. The chromotropic acid photometric method for the determination of titanium content GB/T 223.17, Methods for chemical analysis of iron, steel and alloy -- The diantipyrylmethane photometric method for the determination of titanium content GB/T 223.19, Methods for chemical analysis of iron, steel and alloy. The neocuproine-chloroform extraction photometric method for the determination of copper content GB/T 223.21, Methods for chemical analysis of iron steel and alloy. The 5-Cl- PADAB spectrophotometric method for the determination of cobalt content GB/T 223.25, Methods for chemical analysis of iron, steel and alloy. The j) Ultrasonic testing method and level; k) Special requirements.4 Dimensions, shape, weight4.1 The diameter range of steel bars is: 10 mm~260 mm. 4.2 The dimensions, shape and allowable deviations of hot-rolled steel bars shall comply with the requirements of Group 2 in GB/T 702-2017. 4.3 The dimensions, shape and allowable deviations of forged steel bars shall comply with the requirements of Group 2 in GB/T 908-2008. 4.4 Steel bars with other sizes and allowable deviations may also be provided upon negotiation between the supplier and the purchaser and specified in the contract. 4.5 Steel bars are delivered according to actual weight.5 Technical requirements5.1 Designation and chemical composition The steel designation and chemical composition (melting analysis and finished product analysis) shall comply with the requirements of Table 1. Other element chemical composition requirements may be specified according to the purchaser's requirements and in the contract. 5.2 Smelting method Steel shall be smelted by electric furnace + refining outside the furnace or electric furnace + refining outside the furnace + electroslag remelting. Other smelting processes that can ensure quality can also be used. The smelting method of steel shall be specified in the contract. 5.3 Manufacturing method Steel bars shall be hot rolled or forged. The total processing ratio shall not be less than 3. For steel bars for Class 1 equipment, a manufacturing outline shall be prepared, which shall include the sequence and inspection procedures in the manufacturing process. 5.4 Delivery condition Steel bars are delivered in solution state. The recommended solution treatment temperature is 1030℃~1150℃. According to the requirements of the purchaser, after negotiation between the supplier and the purchaser and specified in the contract, steel bars can be delivered in hot rolling or forging (without solution treatment). 5.5 Mechanical properties The mechanical properties of steel bars delivered after solution treatment shall comply with the provisions of Table 2. For steel bars delivered without solution treatment, the blanks shall be cut and simulated for solution treatment as test materials. The mechanical properties of the samples shall be tested. The results shall comply with the provisions of Table 2. 5.6 Intergranular corrosion Steel bars delivered after solution treatment shall be subjected to intergranular corrosion test. The test method adopts method E in GB/T 4334-2008. Except for 06Cr19Ni10 and 06Cr17Ni12Mo2, other designations of samples shall be sensitized before testing. Among them, the sensitization treatment of 06Cr18Ni11Ti adopts the following treatment B, and other designations adopt any of the following treatment methods: a) Treatment A: 650℃±10℃ for steel without molybdenum, 675℃±10℃ for steel with molybdenum; keep warm for 2 h, air cool; b) Treatment B: 700℃±10℃ for steel without molybdenum; 725℃±10℃ for steel containing molybdenum; heating time shall not exceed 5 min, keep warm for 30 min, cool at a rate of (60±5)℃/h, furnace cool to 500℃, and air cool to room temperature. 5.7 Ultrasonic testing Finished steel bars shall be subjected to ultrasonic testing. The method may be GB/T 4162-2008 or NB/T 20003.2 or other methods. The qualified level shall be determined by negotiation between the supplier and the purchaser and shall be specified in the contract. If not specified, Grade B in GB/T 4162-2008 shall be used. 7.4.3 Except for tensile and impact tests, the reinspection and judgment rules for other items shall comply with the provisions of GB/T 17505. 7.4.4 If a product is rejected due to unsatisfactory results of one or more mechanical property tests, reheat treatment is allowed. Retest all items except chemical composition according to the provisions of this Standard. The conditions of reheat treatment shall be included in the test report. Reheat treatment shall not exceed once. 7.5 Rounding off of test results For measured or calculated values, the rounded value comparison method shall be used in accordance with the provisions of GB/T 8170.8 Packaging, marking and quality certificate8.1 The packaging and marking of steel bars shall comply with the relevant provisions of GB/T 2101. 8.2 When the steel bars leave the factory, they shall be accompanied by a quality certificate and a test report (or record) signed by the supplier's inspection department. The record and test report shall at least include: - Composition list for smelting analysis and composition list for finished product analysis; - Heat treatment records (in case of re-heat treatment, all heat treatment records are included); - Mechanical properties test report (tensile, impact); - Intergranular corrosion test report; - Grain size inspection report (if any); - α-phase inspection report (if any); - Non-metallic inclusion inspection report (if any); - Macrostructure inspection report (if any); - Ultrasonic inspection report; - Penetrating inspection report (if any); - Dimension inspection sheet; - Surface quality inspection report; ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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