1 Scope
This standard specifies the technical requirements, test methods and inspection rules of stainless and heat-resisting steel forgings for the pressure equipments.
This standard is applicable to the stainless and heat-resisting steel forgings for pressure equipments whose design pressure is less than 100 MPa.
2 Normative References
The following documents are indispensable for the application of this standard. For dated references, only the dated edition is applicable to this document. For undated references, the latest editions of the normative documents (including all the amendments) are applicable to this document.
GB/T 222-2006 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223 Methods for Chemical Analysis of Iron, Steel and Alloy
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (ISO 6892:1998(E))
GB/T 231.1 Metallic Materials-Brinell Hardness Test-Part 1: Test Method (ISO 6506.1:2005)
GB/T 6394 Metal-methods for Estimating the Average Grain Size (ASTM E112:1996)
GB/T 10561 Steel Determination of Content of Nonmetallic Inclusions-Micrographic Method Using Standards Diagrams (ISO 4967:1998)
GB/T 11170 Stainless Steel - Determination of Multi-Element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 20066 Steel and Iron-Sampling and Preparation of Samples for the Determination of Chemical Composition (ISO 14284:1996)
JB/T 4730.3 Nondestructive Testing of Pressure Equipments-Part 3: Ultrasonic Testing
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
Hollow forging
It refers to the axisymmetrical hollow forging, whose axial length L is greater than its outer diameter D, as shown in Fig. 1a). t shall be the nominal thickness.
3.2
Ring forging
It refers to the axisymmetrical hollow forging whose axial length L is less than or equal to its outer diameter D, as shown in Fig. 1b). The smaller one of L and t shall be the nominal thickness.
3.3
Disk forging
It refers to the axisymmetrical solid forging, whose axial length L is less than or equal to its outer diameter D, as shown in Fig. 1c). L shall be the nominal thickness.
3.4
Bowl forging
It refers to the axisymmetrical forging with concave section, whose height H is less than or equal to its outer diameter D, as shown in Fig. 1d). The greater one of t1 and t2 shall be the nominal thickness.
3.5
Neck flange forging
It refers to the axisymmetrical hollow forging with two axial outside diameters, as shown in Fig. 1e). The greater one of t1 and t2 shall be the nominal thickness.
3.6
Bar forging
It refers to the solid forging with circular section, whose axial length L is greater than its outer diameter D, as shown in Fig. 1f). D shall be the nominal thickness.
It refers to the forging with rectangular section, whose length L is greater than its both side length a and b, as shown in Fig. 1g). The smaller one of a and b shall be the nominal thickness.
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
Appendix A (Normative) Additional Requirements
Appendix B (Informative) Steel Grade Comparison Between the New and Old Standards
NB/T 47010-2010(JB4278), NB 47010-2010(JB4278), NBT 47010-2010(JB4278), NB/T47010-2010(JB4278), NB/T 47010, NB/T47010, NB47010-2010(JB4278), NB 47010, NB47010, NBT47010-2010(JB4278), NBT 47010, NBT47010
Introduction of NB/T 47010-2010(JB4278)
1 Scope
This standard specifies the technical requirements, test methods and inspection rules of stainless and heat-resisting steel forgings for the pressure equipments.
This standard is applicable to the stainless and heat-resisting steel forgings for pressure equipments whose design pressure is less than 100 MPa.
2 Normative References
The following documents are indispensable for the application of this standard. For dated references, only the dated edition is applicable to this document. For undated references, the latest editions of the normative documents (including all the amendments) are applicable to this document.
GB/T 222-2006 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223 Methods for Chemical Analysis of Iron, Steel and Alloy
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (ISO 6892:1998(E))
GB/T 231.1 Metallic Materials-Brinell Hardness Test-Part 1: Test Method (ISO 6506.1:2005)
GB/T 6394 Metal-methods for Estimating the Average Grain Size (ASTM E112:1996)
GB/T 10561 Steel Determination of Content of Nonmetallic Inclusions-Micrographic Method Using Standards Diagrams (ISO 4967:1998)
GB/T 11170 Stainless Steel - Determination of Multi-Element Contents - Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 20066 Steel and Iron-Sampling and Preparation of Samples for the Determination of Chemical Composition (ISO 14284:1996)
JB/T 4730.3 Nondestructive Testing of Pressure Equipments-Part 3: Ultrasonic Testing
3 Terms and Definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
Hollow forging
It refers to the axisymmetrical hollow forging, whose axial length L is greater than its outer diameter D, as shown in Fig. 1a). t shall be the nominal thickness.
3.2
Ring forging
It refers to the axisymmetrical hollow forging whose axial length L is less than or equal to its outer diameter D, as shown in Fig. 1b). The smaller one of L and t shall be the nominal thickness.
3.3
Disk forging
It refers to the axisymmetrical solid forging, whose axial length L is less than or equal to its outer diameter D, as shown in Fig. 1c). L shall be the nominal thickness.
3.4
Bowl forging
It refers to the axisymmetrical forging with concave section, whose height H is less than or equal to its outer diameter D, as shown in Fig. 1d). The greater one of t1 and t2 shall be the nominal thickness.
3.5
Neck flange forging
It refers to the axisymmetrical hollow forging with two axial outside diameters, as shown in Fig. 1e). The greater one of t1 and t2 shall be the nominal thickness.
3.6
Bar forging
It refers to the solid forging with circular section, whose axial length L is greater than its outer diameter D, as shown in Fig. 1f). D shall be the nominal thickness.
It refers to the forging with rectangular section, whose length L is greater than its both side length a and b, as shown in Fig. 1g). The smaller one of a and b shall be the nominal thickness.
Contents of NB/T 47010-2010(JB4278)
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
Appendix A (Normative) Additional Requirements
Appendix B (Informative) Steel Grade Comparison Between the New and Old Standards
