GB/T 13925-2025 PDF English
US$275.00 · In stock · Download in 9 secondsGB/T 13925-2025: Metallographic test method for high manganese cast steel Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 13925: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 13925-2025 | English | 275 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Metallographic test method for high manganese cast steel
| Valid |
| GB/T 13925-2010 | English | 70 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Metallographs for high manganese cast steel
| Valid |
| GB/T 13925-1992 | English | 479 |
Add to Cart
|
4 days
|
Metallographs for high manganese cast steel
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 13925-2025
GB/T 13925-2025: Metallographic test method for high manganese cast steel---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT13925-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.040.01
CCS J 31
Replacing GB/T 13925-2010
Metallographic Test Method for High Manganese Cast Steel
Issued on: JUNE 30, 2025
Implemented on: JANUARY 1, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 5
4 Sampling Method... 6
5 Microstructure... 6
6 Carbide Rating... 7
7 Grain Size Rating... 12
8 Non-metallic Inclusion (oxide + sulfide) Rating... 13
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives
for Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This document serves as a replacement for GB/T 13925-2010 Metallographs for High
Manganese Cast Steel. In comparison with GB/T 13925-2010, apart from structural
adjustments and editorial modifications, the main technical changes are as follows.
a) The scope is modified (see Chapter 1; Chapter 1 of Version 2010);
b) The term and definition of average diameter are added (see 3.1);
c) The sampling method is modified (see Chapter 4; Chapter 3 of Version 2010);
d) The microstructure photograph of cast high manganese steel after water-toughening
treatment is modified (see Chapter 5; Chapter 4 of Version 2010);
e) The carbide rating requirements and microstructure photographs are modified (see
Chapter 6; Chapter 5 of Version 2010);
f) The non-metallic inclusion (oxide + sulfide) rating requirements and microstructure
photographs are modified (see Chapter 8; Chapter 7 of Version 2010).
Please be noted that certain content of this document may involve patents. The institution
issuing this document does not undertake the responsibility of identifying these patents.
This document was proposed by and shall be under the jurisdiction of National Technical
Committee 54 on Foundry of Standardization Administration of China (SAC/TC 54).
The drafting organizations of this document. Jinan University; Zhengzhou Dingsheng High-
tech New Energy Engineering Technology Co., Ltd.; Maanshan Haitian Heavy Industry
Technology Development Co., Ltd.; Zhejiang Huasheng Castings Metal Products Co., Ltd.;
China Railway Baoji Bridge Group Co., Ltd.; Guangdong Torch Test Co., Ltd.; CITIC Heavy
Industries Co., Ltd.; Zhejiang Wujing Machine Manufacture Co., Ltd.; Guangdong Taibang
Wear Resistant Metal Technology Ltd.; Zhumadian Hengjiu New Wear-resistant Materials Co.,
Ltd.; Suichang Dexin Casting Steel Co., Ltd.; Shaoguan Qirui Environmental Protection
Equipment Co., Ltd.; Shandong Tianli Machinery Casting Co., Ltd.; Zhejiang Suijin Special
Casting Co., Ltd.; Tongling University; Chengde Rongmao Steel Casting Co., Ltd.; Jiangsu
Jinyang Machinery Co., Ltd.; China Academy of Machinery Shenyang Research Institute of
Foundry Co., Ltd.; Sanming Yijun Machinery Casting Co., Ltd.; Jiangsu Wanheng New
Material Technology Co., Ltd.; Qingzhou Jukai Industrial Equipment Co., Ltd.; Hualin Special
Steel Group Co., Ltd.; Baoji Chushi Metal Detection Co., Ltd.; Hubei Gucheng County
Donghua Machinery Co., Ltd.
Metallographic Test Method for High Manganese Cast Steel
1 Scope
This document specifies the metallographic sampling methods and microstructure, as well as
the basis for evaluating the carbide content, grain size and non-metallic inclusion grade of high
manganese cast steel.
This document applies to the metallographic test of water-toughened austenitic manganese steel
castings, except for medium manganese steel ZG120Mn7Mo, as specified in GB/T 5680.The
metallographic test of other water-toughened high manganese cast steel may take this as a
reference.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. 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 5611 Foundry Terminology
GB/T 5680 Austenitic Manganese Steel Castings
GB/T 6394 Determination of Estimating the Average Grain Size of Metal
GB/T 13298-2015 Inspection Methods of Microstructure for Metals
GB/T 40805-2021 Steel Castings - General Technical Delivery Requirements
3 Terms and Definitions
The terms and definitions defined in GB/T 5611 are applicable to this document.
3.1 average diameter
The average dimension of the major and minor axes of the particles.
NOTE. the dimension of the major axis refers to the maximum dimension of the particles, and the
dimension of the minor axis refers to the maximum dimension perpendicular to the major
axis.
4 Sampling Method
4.1 Specimens shall be cut from the casting, its attached test block, or a single-cast test block.
Metallographic observation may also be performed directly on the casting. The specific
sampling location of the casting or its attached test block shall be agreed upon by the supply-
side and the demand-side. The shape and dimensions of the single-cast test block shall conform
to the requirements of Figure 1 in GB/T 40805-2021.Unless otherwise agreed upon by the
supply-side and the demand-side, the supply-side may select any type of single-cast test block.
Metallographic specimens from attached test blocks or single-cast test blocks shall be taken at
least 6 mm from the casting surface.
4.2 Specimens shall be protected from thermal effects during cutting and preparation.
4.3 Specimen dimensions shall comply with the inspection surface area specified in GB/T
13298-2015, with an inspection area of less than 400 mm2.
5 Microstructure
The microstructure of high manganese cast steel after water-toughening treatment shall be
austenite (see Figure 1) or austenite with a small number of carbides.
6 Carbide Rating
6.1 Etching agent. 4% nital, glycerol mixed acid (HNO3. HCl. glycerol = 1. 2. 3), and
supersaturated picric acid can be used.
6.2 Magnification. 500.
6.3 Field of view for evaluation. 80 mm (actual field of view for evaluation. 160 m). The
most severe field of view is selected for evaluation.
6.4 Undissolved carbide rating. see Table 1.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 13925-2025 be delivered?Answer: The full copy PDF of English version of GB/T 13925-2025 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 13925-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 13925-2025_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 13925-2025 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB/T 13925-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 13925-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB/T 13925-2025?A step-by-step guide to download PDF of GB/T 13925-2025_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 13925-2025".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|