GB/T 5680-2023 Austenitic manganese steel castings
1 Scope
This document specifies the order information, manufacturing technology, technical requirements, test methods, testing rules, as well as marking, certificate, packaging, transportation and storage of austenitic manganese steel castings.
This document is applicable to wear-resistant austenitic manganese steel castings subjected to impact loads. It may also serve as a reference for wear-resistant austenitic manganese steel castings under other working conditions.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 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 223.11 Iron steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method
GB/T 223.25 Methods for chemical analysis of iron, steel and alloy - The dimethylglyoxime gravimetric 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 223.43 Iron steel and alloy - Determination of tungsten content - Gravimetric method and spectrophotometric method
GB/T 223.59 Iron, steel and alloy - Determination of phosphorus content - Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method
GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace
GB/T 223.72 Iron, steel and alloy - Determination of sulfur content - Gravimetric method
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room 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 231.1-2018, ISO 6506-1:2014, MOD)
GB/T 232 Metallic materials - Bend test (GB/T 232-2010, ISO 7438: 2005, MOD)
GB/T 1031-2009 Geometrical product specifications (GPS) - Surface texture: Profile method - Surface roughness parameters and their values
GB/T 5611 Foundry terminology
GB/T 5613 Designation for cast steels
GB/T 5677 Castings - Radiographic testing
GB/T 6060.1 Surface roughness comparison specimen - Part 1: Casting surface
GB/T 6394 Determination of estimating the average grain size of metal
GB/T 6414-2017 Castings - System of dimensional tolerances and machining allowances
GB/T 9443 Steel and iron castings - Liquid penetrant inspection
GB/T 11351-2017 Mass tolerances of casting
GB/T 13298 Inspection methods of microstructure for metals
GB/T 13925 Metallographs for high manganese cast steel
GB/T 15056 Casting surface roughness - Appraising method
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 39428-2020 Steel castings by sand casting - Visual examination method of surface quality
GB/T 39638 X-ray digital radiographic testing for casting
GB/T 40800 Specification and qualification of welding procedures for production welding of steel castings
GB/T 40805-2021 Steel castings - General technical delivery requirements (ISO 4990: 2015, MOD)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 5611 apply.
4 Order information
4.1 The purchaser should specify the material designation, supply quantity, casting name, delivery status, technical requirements and testing items of austenitic manganese steel castings (hereinafter referred to as "castings") in the order contract.
4.2 The purchaser should provide the order drawings and technical conditions.
4.3 When the purchaser has special requirements or other supplementary requirements, both the supplier and the purchaser shall agree upon each other.
5 Manufacturing technology
5.1 Casting
5.1.1 Unless otherwise required by the purchaser, the smelting method of alloy materials shall be determined by the supplier itself.
5.1.2 Unless otherwise required by the purchaser, the casting forming process and method shall be determined by the supplier itself.
5.2 Heat treatment
5.2.1 Castings shall be subjected to water toughening treatment (water-quenched solution treatment). Castings shall be evenly heated and kept warm during water toughening treatment, and shall be treated quickly with water. The water temperature after the casting is immersed shall not exceed 50°C.
5.2.2 When the thickness of the casting is less than 45 mm and the carbon content is less than 0.8%, ZG90Mn14Mo may be supplied directly without heat treatment. All other designations of castings shall be subjected to water toughening treatment (water-quenched solution heat treatment), and the water temperature during water toughening treatment shall not be lower than 1,040°C.
6 Technical requirements
6.1 General requirements
6.1.1 The testing items of castings shall include: chemical composition, hardness, surface quality, dimensional tolerance, geometric tolerance and weight tolerance.
6.1.2 Upon agreement between the supplier and the purchaser, the metallographic structure, the tensile property and impact property, and the bending property of castings, samples, and specimens, as well as the quality of castings by non-destructive testing may be tested at room temperature. At least one of these items shall be selected as an item for product testing.
6.2 Material designation and chemical composition
6.2.1 The method of representing material designation of austenitic manganese steel and austenitic manganese steel castings shall meet the requirements of GB/T 5613. According to the content of alloying elements such as carbon, manganese, chromium and molybdenum, the designation of austenitic manganese steel and austenitic manganese steel casting materials is classified into 11 grades, as shown in Table 1.
6.2.2 The main chemical composition of each designation shall meet those specified in Table 1.
Table 1 Material designation and main chemical compositions of austenitic manganese steel castings
6.2.3 The allowable tolerances for the chemical composition of steels shall meet the requirements of GB/T 222.
6.3 Brinell hardness
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Order information
5 Manufacturing technology
6 Technical requirements
7 Test methods
8 Testing rules
9 Marking, certificate, packaging, transportation and storage
Annex A (Informative) Comparison of clause/subclause numbers between this document and ISO 13521: 2015
Annex B (Informative) Technical differences between this document and ISO 13521: 2015 and their justifications
GB/T 5680-2023 Austenitic manganese steel castings
1 Scope
This document specifies the order information, manufacturing technology, technical requirements, test methods, testing rules, as well as marking, certificate, packaging, transportation and storage of austenitic manganese steel castings.
This document is applicable to wear-resistant austenitic manganese steel castings subjected to impact loads. It may also serve as a reference for wear-resistant austenitic manganese steel castings under other working conditions.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions 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 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 223.11 Iron steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method
GB/T 223.25 Methods for chemical analysis of iron, steel and alloy - The dimethylglyoxime gravimetric 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 223.43 Iron steel and alloy - Determination of tungsten content - Gravimetric method and spectrophotometric method
GB/T 223.59 Iron, steel and alloy - Determination of phosphorus content - Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method
GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace
GB/T 223.72 Iron, steel and alloy - Determination of sulfur content - Gravimetric method
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room 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 231.1-2018, ISO 6506-1:2014, MOD)
GB/T 232 Metallic materials - Bend test (GB/T 232-2010, ISO 7438: 2005, MOD)
GB/T 1031-2009 Geometrical product specifications (GPS) - Surface texture: Profile method - Surface roughness parameters and their values
GB/T 5611 Foundry terminology
GB/T 5613 Designation for cast steels
GB/T 5677 Castings - Radiographic testing
GB/T 6060.1 Surface roughness comparison specimen - Part 1: Casting surface
GB/T 6394 Determination of estimating the average grain size of metal
GB/T 6414-2017 Castings - System of dimensional tolerances and machining allowances
GB/T 9443 Steel and iron castings - Liquid penetrant inspection
GB/T 11351-2017 Mass tolerances of casting
GB/T 13298 Inspection methods of microstructure for metals
GB/T 13925 Metallographs for high manganese cast steel
GB/T 15056 Casting surface roughness - Appraising method
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 39428-2020 Steel castings by sand casting - Visual examination method of surface quality
GB/T 39638 X-ray digital radiographic testing for casting
GB/T 40800 Specification and qualification of welding procedures for production welding of steel castings
GB/T 40805-2021 Steel castings - General technical delivery requirements (ISO 4990: 2015, MOD)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 5611 apply.
4 Order information
4.1 The purchaser should specify the material designation, supply quantity, casting name, delivery status, technical requirements and testing items of austenitic manganese steel castings (hereinafter referred to as "castings") in the order contract.
4.2 The purchaser should provide the order drawings and technical conditions.
4.3 When the purchaser has special requirements or other supplementary requirements, both the supplier and the purchaser shall agree upon each other.
5 Manufacturing technology
5.1 Casting
5.1.1 Unless otherwise required by the purchaser, the smelting method of alloy materials shall be determined by the supplier itself.
5.1.2 Unless otherwise required by the purchaser, the casting forming process and method shall be determined by the supplier itself.
5.2 Heat treatment
5.2.1 Castings shall be subjected to water toughening treatment (water-quenched solution treatment). Castings shall be evenly heated and kept warm during water toughening treatment, and shall be treated quickly with water. The water temperature after the casting is immersed shall not exceed 50°C.
5.2.2 When the thickness of the casting is less than 45 mm and the carbon content is less than 0.8%, ZG90Mn14Mo may be supplied directly without heat treatment. All other designations of castings shall be subjected to water toughening treatment (water-quenched solution heat treatment), and the water temperature during water toughening treatment shall not be lower than 1,040°C.
6 Technical requirements
6.1 General requirements
6.1.1 The testing items of castings shall include: chemical composition, hardness, surface quality, dimensional tolerance, geometric tolerance and weight tolerance.
6.1.2 Upon agreement between the supplier and the purchaser, the metallographic structure, the tensile property and impact property, and the bending property of castings, samples, and specimens, as well as the quality of castings by non-destructive testing may be tested at room temperature. At least one of these items shall be selected as an item for product testing.
6.2 Material designation and chemical composition
6.2.1 The method of representing material designation of austenitic manganese steel and austenitic manganese steel castings shall meet the requirements of GB/T 5613. According to the content of alloying elements such as carbon, manganese, chromium and molybdenum, the designation of austenitic manganese steel and austenitic manganese steel casting materials is classified into 11 grades, as shown in Table 1.
6.2.2 The main chemical composition of each designation shall meet those specified in Table 1.
Table 1 Material designation and main chemical compositions of austenitic manganese steel castings
6.2.3 The allowable tolerances for the chemical composition of steels shall meet the requirements of GB/T 222.
6.3 Brinell hardness
Contents of GB/T 5680-2023
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Order information
5 Manufacturing technology
6 Technical requirements
7 Test methods
8 Testing rules
9 Marking, certificate, packaging, transportation and storage
Annex A (Informative) Comparison of clause/subclause numbers between this document and ISO 13521: 2015
Annex B (Informative) Technical differences between this document and ISO 13521: 2015 and their justifications
