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GB/T 1348-2019Spheroidal graphite iron castings (English PDF)

Also coversGBT1348-2019

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2019

Implementation date

July 1, 2020

Scope

GB/T 1348-2019 (Spheroidal graphite iron castings) is available as an English-translated PDF.

GB/T 1348-2019 — This Standard specifies the designations, order information, manufacturing methods, chemical composition, technical requirements, sample preparation, test methods, inspection rules, marking, quality certificate, rust prevention, packaging and storage of spheroidal graphite iron castings.

Document preview — GB/T 1348-2019

National Standard of the People's Republic of China

Issued by: SAMR; SAC

Foreword...3
1 Scope...6
2 Normative References...6
3 Terms and Definitions...8
4 Designations of Spheroidal Graphite Cast Iron...9
5 Order Information...9
6 Manufacturing Methods and Chemical Composition...10
7 Technical Requirements...10
8 Preparation of Test Specimens...17
9 Test Methods...25
10 Inspection Rules...28
11 Marking and Quality Certificate...30
12 Rust Prevention, Packaging and Storage...31

Foreword

This Standard was drafted in accordance with the rules in GB/T 1.1-2009.

This Standard serves as a replacement of GB/T 1348-2009 Spheroidal Graphite Iron

Castings. In comparison with GB/T 1348-2009, the main technical changes are as follows.

---The Scope is modified (see Chapter 1; Chapter 1 of Version 2009);

---Terms and definitions are added (see 3.1, 3.2, 3.5 ~ 3.9);

---Low-temperature impact performance indexes of spheroidal graphite cast iron

are modified (see Table 2; Table 4 of Version 2009);

---Three designations of spheroidal graphite cast iron are added (see Table 1);

---The tensile properties of solid solution strengthened ferritic spheroidal graphite

cast iron are added (see Table 3);

---Side-by-side cast sample is added (see 8.2.4).

This Standard adopts the re-drafting law in the modification and adoption of ISO

1083.2018 Spheroidal Graphite Cast Irons - Classification.

In comparison with ISO 1083.2018, this Standard makes structural adjustments.

Appendix A lists out a comparison table of chapter numbers between this Standard

and ISO 1083.2018.

The technical differences between this Standard and ISO 1083.2018, and the reasons

of the differences are as follows.

---In terms of Normative References, this Standard makes certain adjustments

with technical differences, so as to adapt to the technical conditions of China.

The adjustments are intensively reflected in Chapter 2 "Normative References".

The specific adjustments are as follows.

 GB/T 229, which modifies and adopts International Standard, is used to

replace ISO 148-1;

 GB/T 9441, which modifies and adopts International Standard, is used to

replace ISO 945-1;

 GB/T 231.1, which modifies and adopts International Standard, is used to

replace ISO 6506-1;

 GB/T 228.1, which equivalently adopts International Standard, is used to

replace ISO 6892-1;

 GB/T 5612, which modifies and adopts International Standard, is used to

replace ISO/TR 15931;

 The following references are added. GB/T 223.3, GB/T 223.4, GB/T 223.60,

GB/T 223.72, GB/T 223.83, GB/T 223.86, GB/T 5611, GB/T 5677, GB/T

6060.1, GB/T 6414, GB/T 9443, GB/T 9444, GB/T 11351, GB/T 24234, GB/T 34904.

---For ease of use, the repeated terms in GB/T 5611 are deleted; the term "Solid

Solution Strengthened" is added (see 3.7).

---In order to comply with the structure of the product standard, the technical

conditions for the appearance quality of castings are added (see 7.4 ~ 7.8).

---In order to satisfy the demands for product testing and ensure the accuracy of

testing, the test methods for the quality performance of castings are added (see 9.3 ~ 9.10).

---In order to satisfy the users' demands, the requirements for cast marking,

accompanying documents, storage and transportation are added (see Chapter 11 and Chapter 12).

This Standard was proposed by and shall be under the jurisdiction of National

Technical Committee on Casting of Standardization Administration of China (SAC/TC 54).

The drafting organizations of this Standard. Shenyang Research Institute of Foundry

Co., Ltd.; Guangdong Zhongtian Chuangzhan Group; Hefei JAC Casting Co., Ltd.;

Anhui Shenjian Technology Co., Ltd.; Tianrun Crankshaft Co., Ltd.; CRRC Qishuyan

Institute Co., Ltd.; Ningxia KOCEL Group; Laizhou Xinzhongyao Machinery Co., Ltd.;

Yantai Product Quality Supervision and Inspection Institute; Jiangsu SINOJIT Wind

Energy Technology Co., Ltd.; Shandong Longji Machinery Co., Ltd.; Weifang

Changsheng Pipe Co., Ltd.; Changge Fuxing Auto Parts Co., Ltd.; Jiangxi Zhangshu

Fuling Internal Combustion Engine Parts Co., Ltd.; Yuzhou Henglilai Alloy Co., Ltd.;

Suzhou Dongya Mechanical Foundry; Shandong Huijin Co., Ltd.; Anhui Research

Institute of Mechanical Science; Hohai University; Shanghai Honggang Power Station

Equipment Casting and Forging Co., Ltd.; Shanghai Volkswagen Co., Ltd.; Ningxia

Wear Casting Co., Ltd.

The drafters of this Standard. Zhang Yin, Chen Yongcheng, Song Liang, Cong

Jianchen, Zhao Yongfu, Wang Zehua, Ye Tianhan, Pei Bing, Xue Ruili, Yu Xuru, Qian

Kuncai, Wu Baocheng, Jiang Tianfang, Wu Tieming, Ruan Jiangang, Yuan Xiaolei,

Yang Jinming, Zhang Shipeng, Zhao Xuelong, Yang Hongsheng, Chen Tao, Ke Zhimin,

Feng Meizhen, Li Hong, Zhang Shouquan, Cui Lanfang, Wang Meixi, Zhou Hongtao,

Wang Yingzhan, Qian Dongfang, Leng Aiping, Liu Honglei, Liu Yang, Sun Linlin, Zhang

Jie, Wang Xiaoning.

The issuing of the previous versions.

---GB/T 1348-1978, GB/T 1348-1988, GB/T 1348-2009.

Spheroidal Graphite Iron Castings

1 Scope

This Standard specifies the designations, order information, manufacturing methods,

chemical composition, technical requirements, sample preparation, test methods,

inspection rules, marking, quality certificate, rust prevention, packaging and storage of

spheroidal graphite iron castings.

2 Normative References

The following documents are indispensable to the application of this document. In

terms of references with a specified date, only versions with a specified date are

applicable to this document. In terms of references without a specified date, the latest

version (including all the modifications) is applicable to this document.

GB/T 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy - The Diantipyryl

Methane Phosphomolybdate Gravimetric Method for the Determination of

Phosphorous Content

GB/T 223.4 Alloyed Steel - Determination of Manganese Content - Potentiometric or

Visual Titration Method

GB/T 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy - The Perchloric

Acid Dehydration Gravimetric Method for the Determination of Silicon Content

GB/T 223.72 Iron, Steel and Alloy - Determination of Sulfur Content - Gravimetric

Method

GB/T 223.83 Steel and Iron - Determination of High Sulfur Content - Infrared

Absorption Method after Combustion in an Induction Furnace (GB/T 223.83-2009, ISO

13902.1997, IDT)

GB/T 223.86 Steel and Iron - Determination of Total Carbon Content - Infrared

Absorption Method after Combustion in an Induction Furnace (GB/T 223.86-2009, ISO

9556.1989, 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, IDT)

GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method (GB/T 229-2007,

ISO 148-1.2006, MOD)

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 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 6506-3.2005, MOD)

GB/T 5611 Foundry Terminology

GB/T 5612 Code for Representing Cast Iron (GB/T 5612-2008, ISO/TR 115931.2004, MOD)

GB/T 5677 Castings - Radiographic Testing (GB/T 5677-2018, ISO 4993.2015, MOD)

GB/T 6060.1 Surface Roughness Comparison Specimen - Part 1.Casting Surface

GB/T 6414 Castings - Dimensional Tolerances and Geometrical Tolerances and

Machining Allowances (GB/T 6414-2017, ISO 8062-3.2007, MOD)

GB/T 9441 Metallographic Test for Spheroidal Graphite Cast Iron (GB/T 9441-2009, ISO 945-1.2008, MOD)

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 11351 Mass Tolerances of Casting

GB/T 24234 Cast Iron - Determination of Multi-element Contents - Spark Discharge

Atomic Emission Spectrometric Method (routine method)

GB/T 34904 Spheroidal Graphite Iron Castings - Ultrasonic Testing

3 Terms and Definitions

What is defined in GB/T 5611, and the following terms and definitions are applicable to this document.

3.1 Spheroidal Graphite Cast Iron

Spheroidal graphite cast iron refers to cast iron with iron, carbon and silicon as the

basic elements, and with carbon mainly exists in the form of spheroidal graphite.

3.2 Ferritic to Pearlitic Spheroidal Graphite Cast Iron

Ferritic to pearlitic spheroidal graphite cast iron refers to spheroidal graphite cast iron

which contains ferrite or pearlite, or a mixed matrix of ferrite and pearlite.

4 Designations of Spheroidal Graphite Cast Iron

The expression method for the designations of spheroidal graphite cast iron shall

comply with the stipulations of GB/T 5612.It is divided into two types. ferritic to pearlitic

spheroidal graphite cast iron and solid solution strengthened ferritic spheroidal graphite cast iron.

5 Order Information

The following order information shall be provided by the demand-side of castings.

6 Manufacturing Methods and Chemical Composition

The manufacturing methods and chemical composition of spheroidal graphite cast

iron shall be determined by the supply-side on its own. The chemical composition of

spheroidal graphite cast iron shall not be used as the basis for the acceptance

inspection of castings.

7 Technical Requirements

The performance index values listed in this Standard are the performance values

of spheroidal graphite cast iron cast with sand molds or casting molds with thermal

conductivity equivalent to sand molds. Upon agreement between the demand-side and

the supply-side, it may also be used for spheroidal graphite cast iron cast by other methods.

8 Preparation of Test Specimens

The prepared test specimens shall be able to represent the manufactured castings.

The type of test specimens shall be selected in accordance with the mass and wall thickness of the castings.

9 Test Methods

Tensile test shall be conducted in accordance with the stipulations of GB/T 228.1.

Tensile specimens shall preferentially use test specimens with a diameter of 14 mm.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 223.3 · GB/T 223.60 · GB/T 223.83 · GB/T 223.83-2009 · GB/T 223.86 · GB/T 223.86-2009 · ISO 6892 · ISO 148 · ISO 6506 · GB/T 231.2 · GB/T 231.2-2012 · ISO/TR 115931.2004 · ISO 4993.2015 · GB/T 6414 · GB/T 6414-2017 · ISO 8062 · ISO 945 · GB/T 9443 · GB/T 9443-2007 · ISO 4987.1992 · ISO 4986.1992

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