Codeofchina.com is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative.
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 2100-2002 Corrosion-resistanst Steel Castings for General Applications. For the purpose of this standard, the following technical deviations have been made with respect to the GB/T 2100-2002 (the previous edition):
— Standard name is modified to Corrosion-resistanst Steel Castings for General Applications;
— Designation of 9 materials, ZG06Cr13Ni4Mo, ZG08Cr12Ni1, ZG05Cr26Ni6Mo2N, ZG03Cr22Ni6Mo3N, ZG03-Cr25Ni7Mo4WCuN, ZG03Cr26Ni7Mo4CuN, ZG025Cr20Ni25MoTCu1N, ZG025Cr20Ni19Mo7CuN and ZG03Cr26Ni6Mo3N are added;
— The specifications of test pieces for elongation test are modified;
— The technical requirements of major repair welding are modified;
— Mechanical properties and specifications of heat treatment for ZG20Cr13 are modified.
This standard has been redrafted and modified adoption of International Standard ISO 11972:2015 Corrosion-resistanst Cast Steels for General Applications. This standard is changed largely from ISO 11972:2015 in terms of structure. For comparison purposes, a list of the clauses in this standard and the equivalent clauses in the International Standard ISO 11972:2015 is given in the Annex A.
There are technical deviations between this standard and the International Standard ISO 11972:2015. A complete list of technical deviations, together with their justifications, is given below:
— For normative references, this standard covers adjustment on technical differences so as to adapt to techinical conditions in China, which is centralizedly reflected in Clause 2 "Normative References"; specific adjustment is as follows:
? 28 normative references of Methods for Chemical Analysis of Iron, Steel and Alloy are added.
— In consideration of the applicability of this standard, Clause 4 "Test Methods", Clause 5 "Inspection Rules" and Clause 6 "Marking, Storage, Packaging and Transportation" are added.
This standard was proposed and prepared by SAC/TC 54 (National Technical Committee 54 on Foundry of Standardization Administration of China).
The previous editions of this standard are as follows:
— GB/T 2100-1980, GB/T 2100-2002.
Corrosion-resistanst Steel Castings for General Applications
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, marking, storage, packaging and transportation of corrosion-resistant steel castings for general applications.
This standard is applicable to corrosion-resistant steel castings suitable for broad ranges of application which are intended for a wide variety of corrosion applications.
2 Normative References
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.4 Alloyed Steel — Determination of Manganese Content — Potentiometric or Visual Titration Method
GB/T 223.5 Steel and Iron — Determination of Acid-soluble Silicon and Total Silicon Content — Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.12 Methods for Chemical Analysis of Iron, Steel and Alloy — The Sodium Carbonate Separation-Diphenyl Carbazide Photometric Method for the Determination of Chromium Content
GB/T 223.13 Methods for Chemical Analysis of Iron, Steel and Alloy — The Ammonium Ferrous Sulfate Titration Method for the Determination of Vanadium 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 223.24 Methods for Chemical Analysis of Iron, Steel and Alloy — The Extraction Seperation — The Dimethylglyoxime Spectrophotometric Method for the Determination of Nickel Content
GB/T 223.26 Iron Steel and Alloy — Determination of Molybdenum Content — The Thiocyanate Spectrophotometric Method
GB/T 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy — The Indophenal Blue Photometric Methods for the Determination of Nitrogen Content after Distillation Separation
GB/T 223.40 Iron, Steel and Alloy — Determination of Niobium Contentby the Sulphochlorophenol S Spectrophotometric Method
GB/T 223.43 Iron, Steel and Alloy — Determination of Tungsten Content — Gravimetric Method and Spectrophotometric Method
GB/T 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy — The Ammonium Phosphomolybdate Volumetric Method for the Determination of Phosphorus Content
GB/T 223.69 Iron, Steel and Alloy — Determination of Carbon Contents — Gas-volumetric Method after Combustion in the Pipe Furnace
GB/T 223.85 Steel and Iron — Determination of Sulfur Content — Infrared Absorption Method after Combustion in an Induction Furnace (GB/T 223.85-2009, ISO 4935:1989, IDT)
GB/T 228.1 Metallic Materials — Tensile Testing — Part 1: Method of Test at Room Temperature (GB/T 228.1-2010, 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 5677 Radiographic Testing for Steel Castings (GB/T 5677-2077, ISO 4993:1987, IDT)
GB/T 6060.1 Roughness Comparison Specimens — Cast Surfaces
GB/T 6414 Castings — Dimensional Tolerances and Geometrical Tolerances and Machining Allowances
GB/T 7233.1 Steel Castings — Ultrasonic Examination — Part 1: Steel Castings for General Purposes (GB/T 7233.1 2009, ISO 4992-1:2006, MOD)
GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgement of Limiting Values
GB/T 9443 Penetrant Testing for Steel Castings (GB/T 9443-2007, ISO 4987:1992, IDT)
GB/T 9444 Magnetic Particle Testing for Steel Castings (GB/T 9444 2007, ISO 4986:1992, IDT)
GB/T 11170 Stainless steel — Determination of Multi-element Contents — Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 11351 Mass Tolerances for Castings
GB/T 11352 Carbon Steel Castings for General Engineering (GB/T 11352-2009, ISO 3755:1991, ISO 4990:2003, MOD)
GB/T 14203 General Rules for Spark Discharge Atomic Emission Spectrometry
GB/T 15056 Evaluation Method on Cast Surface Roughness
GB/T 20066 Steel and Iron — Sampling and Preparation of Samples for the Determination of Chemical Composition (GB/T 80066-8006, ISO 14284:1996, IDT)
?
3 Technical Requirements
3.1 Manufacturing
3.1.1 The steelmaking process may be refined by electric arc furnace and refining furnace or determind by the supplier.
3.1.2 Unless otherwise specified, the casting process shall be determined by the supplier.
3.2 Chemical Composition
3.2.1 The steel castings shall conform to the requirements for material designation anf chemical composition specified in Table 1.3.2.2 The castings shall conform to the requirements for permissible deviation of chemical composition specified in GB/T 222.
Table 1 Chemical Composition
No Grade designation Chemical composition (m/m) /%
C Si Mn P S Cr Mo Ni Other
1 ZG15Cr13 0.15 0.80 0.80 0.035 0.025 11.50 to 13.50 0.50 1.00
2 ZG20Cr13 0.16 to 0.24 1.00 0.60 0.035 0.025 11.50 to 14.00
3 ZG10Cr13Ni2Mo 0.10 1.00 1.00 0.035 0.025 12.00 to 13.50 0.20 to 0.50 1.00 to 2.00
4 ZG06Cr13Ni4Mo 0.06 1.00 1.00 0.035 0.025 12.00 to 13.50 0.70 3.50 to 5.00 Cu0.50, V0.05W0.10
5 ZG06Cr13Ni4 0.06 1.00 1.00 0.035 0.025 12.00 to 13.00 0.70 3.50 to 5.00
6 ZG06Cr16Ni5Mo 0.06 0.80 1.00 0.035 0.025 15.00 to 17.00 0.70 to 1.50 4.00 to 6.00
7 ZG10Cr12Ni1 0.10 0.40 0.50 to 0.80 0.030 0.020 11.5 to 12.50 0.50 0.8 to 1.5 Cu0.30V0.30
8 ZG03Cr19Ni11 0.03 1.50 2.00 0.035 0.025 18.00 to 20.00 9.00 to 12.00 N0.20
9 ZG03Cr19Ni11N 0.03 1.50 2.00 0.040 0.030 18.00 to 20.00 9.00 to 12.00 N0.12 to 0.20
10 ZG07Cr19Ni10 0.07 1.50 1.50 0.040 0.030 18.00 to 20.00 8.00 to 11.00
11 ZG07Cr19Ni11Nb 0.07 1.50 1.50 0.040 0.030 18.00 to 20.00 9.00 to 12.00 Nb8C to 1.00
12 ZG03Cr19Ni11Mo2 0.03 1.50 2.00 0.035 0.025 18.00 to 20.00 2.00 to 2.50 9.00 to 12.00 N0.20
13 ZG03Cr19Ni11Mo2N 0.03 1.50 2.00 0.035 0.030 18.00 to 20.00 2.00 to 2.50 9.00 to 12.00 N0.10 to 0.20
14 ZG05Cr26Ni6Mo2N 0.05 1.00 2.00 0.035 0.025 25.00 to 27.00 1.30 to 2.00 4.50 to 6.50 N0.12 to 0.20
15 ZG07Cr19Ni11Mo2 0.07 1.50 1.50 0.040 0.030 18.00 to 20.00 2.00 to 2.50 9.00 to 12.00
16 ZG07Cr19Ni11Mo2Nb 0.07 1.50 1.50 0.040 0.030 18.00 to 20.00 2.00 to 2.50 9.00 to 12.00 Nb8C to 1.00
17 ZG03Cr19Ni11Mo3 0.03 1.50 1.50 0.040 0.030 18.00 to 20.00 3.00 to 3.50 9.00 to 12.00
18 ZG03Cr19Ni11Mo3N 0.03 1.50 1.50 0.040 0.030 18.00 to 20.00 3.00 to 3.50 9.00 to 12.00 N0.10 to 0.20
19 ZG03Cr22Ni6Mo3N 0.03 1.00 2.00 0.035 0.0215 21.00 to 23.00 2.50 to 3.50 4.50 to 6.50 N0.12 to 0.20
20 ZG03Cr25Ni7Mo4WCuN 0.03 1.00 1.50 0.030 0.020 24.00 to 26.00 3.00 to 4.00 6.00 to 8.50 Cu1.00N0.15 to 0.25W1.00
21 ZG03Cr26Ni7Mo4CuN 0.03 1.00 1.00 0.035 0.025 25.00 to 27.00 3.00 to 5.00 6.00 to 8.00 N0.12 to 0.22Cu1.30
22 ZG07Cr19Ni12Mo3 0.07 1.50 1.50 0.040 0.030 18.00 to 20.00 3.00 to 3.50 10.00 to 13.00
23 ZG025Cr20Ni25Mo7Cu1N 0.025 1.00 2.00 0.035 0.020 19.00 to 21.00 6.00 to 7.00 34.00 to 26.00 N0.15 to 0.25Cu0.50 to 1.50
24 ZC025Cr20Ni19Mo7CuN 0.025 1.00 1.20 0.030 0.010 19.50 to 20.50 6.00 to 7.00 17.50 to 19.50 N0.18 to 0.24Cu0.50 to 1.00
25 ZG03Cr26Ni6Mo3Cu3N 0.03 1.00 1.50 0.035 0.025 24.50 to 26.50 2.50 to 3.50 5.00 to 7.00 N0.12 to 0.22Cu2.75 to 3.50
26 ZG03Cr26Ni6Mo3Cu1N 0.03 1.00 2.00 0.030 0.020 24.50 to 26.50 2.50 to 3.50 5.50 to 7.00 N0.12 to 0.25Cu0.80 to 1.30
27 ZG03Cr26Ni6Mo3N 0.03 1.00 2.00 0.035 0.025 24.50 to 26.50 2.50 to 3.50 5.50 to 7.00 N0.12 to 0.25
Note: A single value in the table indicates the maximum limit.
3.3 Mechanical Properties
Castings at room temperature shall conform to the mechanical property requirements specified in Table 2.
Foreword II
1 Scope
2 Normative References
3 Technical Requirements
4 Test Methods
5 Inspection Rules
6 Marking, Storage, Packaging and Transportation
Annex A (Informative) Comparison Table of Clause Numbers between ISO 11972:2015 and This Standard
Annex B (Informative) Heat Treatment Processes of Corrosion-resistant Steel Castings for General Applications
