Standard No.:	NB/T 20004-2014
English Name:	Physical and chemical test methods for materials used in nuclear island components of nuclear power plants
Chinese Name:	核电厂核岛机械设备材料理化检验方法
Professional Classification:	NB    Professional Standard - Energy
Issued by:	National Energy Administration
Issued on:	2014-06-29
Implemented on:	2014-11-1
Status:	valid
Superseding:	NB/T 20004-2011 Physical and Chemical Test Methods for Material Used in Nuclear Island Mechanical Components of Nuclear Power Plants
Language:	English
File Format:	PDF
Word Count:	13500 words
Price(USD):	405.0
Delivery:	via email in 1 business day

1 Scope This standard specifies physical and chemical test methods of metal materials used for mechanical components of nuclear island of pressurized water reactor (PWR) nuclear power plant. This standard is applicable to physical and chemical analysis and inspection on metal materials used for mechanical components of nuclear island of pressurized water reactor (PWR) nuclear power plant. 2 Normative References The 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 226 Test Method for Macrostructure and Defect of Steel by Etching GB/T 228.1-2010 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature (ISO 6892-1: 2009, MOD) GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method (GB/T 229-2007, ISO 148-1: 2006, MOD) GB/T 230.1 Metallic Materials - Rockwell Hardness Test - Part 1: Test Method (Scales A, B, C, D, E, F, G, H, K, N and T) (GB/T 230.1-2009, ISO 6508-1: 2005, MOD) GB/T 230.2 Metallic Materials - Rockwell Hardness Test - Part 2: Verification and Calibration of Testing Machines (Scales A, B, C, D, E, F, G, H, K, N and T) (GB/T 230.2-2012, ISO 6508-2: 2005, MOD) GB/T 230.3 Metallic Materials - Rockwell Hardness Test - Part 3: Calibration of Reference Blocks (Scales A, B, C, D, E, F, G, H, K, N and T) (GB/T 230.3-2012, ISO 6508-3: 2005, IDT) GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1: Test Method (GB/T 231.1-2009, ISO 6506-1: 2005, MOD) GB/T 231.2 Metallic Materials - Brinell Hardness Test - Part 2: Verification and Calibration of Testing Machines (GB/T 231.2-2012, ISO 6506-2: 2005, MOD) GB/T 231.3 Metallic Materials - Brinell Hardness Test - Part 3: Calibration of Reference Blocks (GB/T 231.3-2012, ISO 6505-3: 2005, IDT) GB/T 232 Metallic Materials - Bend Test (GB/T 232-2010, ISO 7438: 2005, MOD) GB/T 242 Metal Materials - Tube - Drift-expending Test (GB/T 242-2007, ISO 8493: 1998, IDT) GB/T 244 Metallic Materials - Tube - Bend Test (GB/T 244-2008, ISO 8491: 1998, IDT) GB/T 246 Metal Materials - Tube - Flattening Test (GB/T 246-2007, ISO 8492: 1998, IDT) GB/T 1954 Methods of Measurement for Ferrite Content in Austenitic Cr-Ni Stainless Steel Weld Metals (GB/T 1954-2008, ISO 8249: 2000, MOD) GB/T 1979 Standard Diagrams for Macrostructure and Defect of Structural Steels GB/T 2651 Tensile Test Method on Welded Joints (GB/T 2651-2008, ISO 4136: 2001, IDT) GB/T 2652 Tensile Test Methods on Weld and Deposited Metal (GB/T 2652-2008, ISO 5178: 2001, IDT) GB/T 2653 Bend Test Methods on Welded Joints (GB/T 2653-2008, ISO 5173: 2000, IDT) GB/T 3808 Verification of Pendulum-type Impact Testing Machines (GB/T 3808-2002,ISO 148-2: 1998, MOD) GB/T 4334-2008 Corrosion of Metals and Alloys - Test Methods for Intergranular Corrosion of Stainless Steels (ISO 3651-1: 1998 & ISO 3651-2: 1998, MOD) GB/T 4338 Metallic Materials - Tensile Testing at Elevated Temperature (GB/T 4338-2006, ISO 783: 1999, MOD) GB/T 4340.1 Metallic Materials - Vickers Hardness Test - Part 1: Test Method (GB/T 4340.1-2009, ISO 6507-1: 2005, MOD) GB/T 4340.2 Metallic Materials - Vickers Hardness Test - Part 2: Verification and Calibration of Testing Machines (GB/T 4340.2-2012, ISO 6507-2: 2005, IDT) ... ... ... ... 3 Terms and Definitions For the purposes of this document, the terms and definitions given in the above-mentioned normative references and the following apply. 3.1 nil ductility transition temperature TNDT the maximum temperature at the fracture of drop hammer specimen when tested according to the method specified in Chapter 6 3.2 reference nil ductility transition temperature RTNDT the temperature determined through drop hammer test and auxiliary Charpy (V-notch) impact test carried out according to the method specified in Chapter 7 4 Tensile Test 4.1 General This Chapter is applicable to tensile test of metals (including base metal, weld metal and welded joint) at room temperature and high-temperature. The temperature range of room-temperature test is generally 10℃~35℃; for test having stringent requirements on temperature, the test temperature shall be 23℃ ± 5℃. The temperature of high temperature test shall be greater than 35℃. 4.2 Specimen

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Tensile Test 5 Charpy (V-notch) Impact Test for Metal 6 Drop Hammer Test (Determination of TNDT) 7 Determination of Reference Nil Ductility Transition Temperature RTNDT 8 Bend Test 9 Drift Expanding Test 10 Flattening Test 11 Hardness Test 12 Fatigue Property Test 13 Fracture Toughness Test 14 Testing of T0 15 Determination of Ferrite Content 16 Macroscopic Structure 17 Metallographic Inspection 18 Intergranular Corrosion Test 19 Chemical Composition Analysis 20 Inspection for Residual Stress of Heat Transfer Tube Made of Austenitic Stainless Steel Annex A (Normative) Tensile Test Specimen Annex B (Normative) Specimen for Drop Hammer Test Annex C (Normative) Selection Principle for the Sensitizing Treatment of Intergranular Corrosion Specimen (for Method I)