1 Scope
This standard specifies terms and definitions, order contents, technical requirements, test methods, inspection rules as well as marking and quality certificate of carbon steel and alloy steel forgings for pressure equipment.
2 Normative References
The following documents for the application of this document are essential. For dated reference, only the edition cited applies. For undated reference, its latest edition (including any amendments) applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223 Methods for Chemical Analysis of Iron, Steel and Alloy (Applicable Parts)
GB/T 226 Test Method for Macrostructure and Defect of Steel by Etching
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature
GB/T 228.2 Metallic Materials - Tensile testing - Part 2: Method of Test at Elevated Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1: Test Method
GB/T 4336 Carbon and Low-alloy Steel - Determination of Multi-element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 6394 Metal-methods for Estimating the Average Grain Size
GB/T 8650 Evaluation of Pipeline and Pressure Vessel Steels for Resistance to Hydrogen-Induced Cracking
GB/T 10561 Steel-Determination of Content of Nonmetallic Inclusions-Micrographic Method Using Standards Diagrams
GB/T 13298 Inspection Methods of Microstructure for Metals
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the Determination of Chemical Composition
GB/T 20123 Steel and Iron - Determination of Total Carbon and Sulfur Content Infrared Absorption Method after Combustion in an Induction Furnace (Routine Method)
GB/T 20124 Steel and Iron - Determination of Nitrogen Content - Thermal Conductimetric Method after Fusion in a Current of Inert Gas (Routine Method)
NB/T 47013.3 Nondestructive Testing of Pressure Equipments - Part 3: Ultrasonic Testing
NB/T 47013.4 Nondestructive testing of pressure Equipments - Part 4: Magnetic Particle Testing
NB/T 47013.5 Nondestructive Testing of Pressure Equipments - Part 5: Penetrant Testing
3 Terms and Definitions
3.1
hollow forging
the axisymmetric hollow forging with axial length L greater than outside diameter D, as shown in Figure 1a); t refers to nominal thickness
3.2
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Order Contents
5 Technical Requirements
6 Test Methods
7 Inspection Rules
8 Marking and Quality Certificate
Annex A (Informative) Forgings for Matched Valves and Special Components of Boiler
Annex B (Normative) Additional Requirements
Annex C (Informative) High-temperature Mechanical Properties
NB/T 47008-2017, NB 47008-2017, NBT 47008-2017, NB/T47008-2017, NB/T 47008, NB/T47008, NB47008-2017, NB 47008, NB47008, NBT47008-2017, NBT 47008, NBT47008
Introduction of NB/T 47008-2017
1 Scope
This standard specifies terms and definitions, order contents, technical requirements, test methods, inspection rules as well as marking and quality certificate of carbon steel and alloy steel forgings for pressure equipment.
2 Normative References
The following documents for the application of this document are essential. For dated reference, only the edition cited applies. For undated reference, its latest edition (including any amendments) applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223 Methods for Chemical Analysis of Iron, Steel and Alloy (Applicable Parts)
GB/T 226 Test Method for Macrostructure and Defect of Steel by Etching
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature
GB/T 228.2 Metallic Materials - Tensile testing - Part 2: Method of Test at Elevated Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1: Test Method
GB/T 4336 Carbon and Low-alloy Steel - Determination of Multi-element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 6394 Metal-methods for Estimating the Average Grain Size
GB/T 8650 Evaluation of Pipeline and Pressure Vessel Steels for Resistance to Hydrogen-Induced Cracking
GB/T 10561 Steel-Determination of Content of Nonmetallic Inclusions-Micrographic Method Using Standards Diagrams
GB/T 13298 Inspection Methods of Microstructure for Metals
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the Determination of Chemical Composition
GB/T 20123 Steel and Iron - Determination of Total Carbon and Sulfur Content Infrared Absorption Method after Combustion in an Induction Furnace (Routine Method)
GB/T 20124 Steel and Iron - Determination of Nitrogen Content - Thermal Conductimetric Method after Fusion in a Current of Inert Gas (Routine Method)
NB/T 47013.3 Nondestructive Testing of Pressure Equipments - Part 3: Ultrasonic Testing
NB/T 47013.4 Nondestructive testing of pressure Equipments - Part 4: Magnetic Particle Testing
NB/T 47013.5 Nondestructive Testing of Pressure Equipments - Part 5: Penetrant Testing
3 Terms and Definitions
3.1
hollow forging
the axisymmetric hollow forging with axial length L greater than outside diameter D, as shown in Figure 1a); t refers to nominal thickness
3.2
Contents of NB/T 47008-2017
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Order Contents
5 Technical Requirements
6 Test Methods
7 Inspection Rules
8 Marking and Quality Certificate
Annex A (Informative) Forgings for Matched Valves and Special Components of Boiler
Annex B (Normative) Additional Requirements
Annex C (Informative) High-temperature Mechanical Properties
