GB/T 17616: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 17616-2025 | English | RFQ |
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Iron and steel coding system for irons, steels and alloys
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GB/T 17616-2025
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| GB/T 17616-2013 | English | 979 |
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Unified numbering system for designation of iron, steel and alloy
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GB/T 17616-2013
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| GB/T 17616-1998 | English | 399 |
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Unified numbering system for designations of iron, steel and alloy
| Obsolete |
GB/T 17616-1998
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Basic data | Standard ID | GB/T 17616-2025 (GB/T17616-2025) | | Description (Translated English) | Iron and steel coding system for irons, steels and alloys | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 17616-2013 | GB/T 17616-2013: Unified numbering system for designation of iron, steel and alloy---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Unified numbering system for designation of iron, steel and alloy
ICS 77.080.01
H40
National Standards of People's Republic of China
Replacing GB/T 17616-1998
Steel and alloy unified numbering system
Unifiednumberingsystemfordesignationofiron, steelandaloy
Issued on. 2013-12-17
2014-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 1 General Provisions
4 structure type 1
5 classification and grouping 2
6 coding rule 2
6.1 alloy steel 2
6.2 bearing steel 3
6.3 cast iron, cast steel and cast alloy 3
6.4 Electrical steel and iron 3
6.5 ferroalloys and pig iron 3
6.6 corrosion resistant alloys and superalloys 3
Metallic Functional Materials 6.7 3
6.8 low-alloy steel 3
6.9 Miscellaneous material 3
6.10 powder and powder metallurgy materials 4
6.11 quenched metals and alloys 4
6.12 stainless steel and heat-resistant steel 4
6.13 Tool Steel 4
6.14 non-alloy steel 4
6.15 Welding Steel and Alloy 4
7 Preparation and Management 4
Table 1 Type of steel and alloy numerals 2 and Unity
Table 2 alloy structural steel unified digital code representation 5
Table 3 bearing steel unified digital code representation 9
Table 4 iron unified digital code representation 10
5 steel and cast alloy unified digital code representation Table 11
Table 6 Electrical steel and iron unified digital code representation 15
7 ferroalloys and pig iron unified digital code representation Table 16
Table 8 corrosion resistant alloys and superalloys unified digital code representation 21
Table 9 Metallic Functional Materials unified digital code representation 22
Table 10 low-alloy steel unified digital code representation 24
Table 11 Miscellaneous material unified digital code representation 25
12 PM Materials unified digital code representation Table 28
Table 13 quenched metal and alloy unified digital code representation 32
14 stainless steel and heat-resistant steel unified digital code representation Table 33
Table 15 Tool Steel unified digital code representation 34
Table 16 Non-alloy steel unified digital code representation 36
Table 17 Welding Steel and Alloy unified digital code representation 38
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 17616-1998 "steel and alloy unified numbering system."
This standard compared with GB/T 17616-1998 standards, the main changes are as follows.
--- Remove the "Definitions" chapter (see 3, 1998);
--- Added "there should be no gap between the arrangement of letters and numbers" provisions (see 3.2);
--- The "precision alloys and other special physical properties of materials" to "Metallic Functional Materials", the "tool steel" to "mold
Steel "(see Table 1);
--- Added "encoding rules" to modify the fine classification of some products and (or) their products mainly consist grades Unified numbering (see
Chapter 6, 1998 edition Tables 2 to 16).
The standard proposed by China Iron and Steel Association.
This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized.
This standard was drafted. Metallurgical Industry Information Standards Institute, Shougang Corporation.
The main drafters of this standard. Wear strong, Luan Yan, Shi Li, Wang Liping.
This standard supersedes the previous editions are.
--- GB/T 17616-1998.
Steel and alloy unified numbering system
1 Scope
This standard specifies the grades of steel and alloy products unified digital code (abbreviated "ISC" code) of the General Regulations, structure type, classification and coding
Group, coding rules, preparation and management.
This standard applies to the preparation of grades of steel and alloy products Unified numbering. Where the inclusion of national standards and industry-standard steel and alloy
Products should also be included in the product trademark and Unified numbering, cross-referencing, two representations are valid.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 221 grades of steel products representation
GB/T 4309 metallurgy and material classification grades representation
GB/T 5612 cast iron grades representation
GB/T 5613 steel grades representation
GB/T 7738 ferroalloy product grades that way
GB/T 13304.1 steel classification - Part 1. Classification by chemical composition
GB/T 13304.2 steel classification - Part 2. Press the main quality classes and main property or application characteristics
GB/T 14984.1 ferroalloy Terminology - Part 1. Materials
GB/T 14992 between high temperature metal alloys and compounds Classification and designation of high-temperature materials
GB/T 15007 corrosion resistant alloy grades
GB/T 15018 Precision Alloy
GB/T 15019 Classification and designation quenched metal
GB/T 15574 Steel Products
3 General
3.1 standard product classifications, definitions and product brands names should comply with the relevant provisions of the standards set out in Chapter 2.
3.2 unified digital code by a fixed six symbols, uppercase first left for Latin prefix (generally do not use "I" and "O"
Letters), there should be no contact between the rear Five-digit Arabic numerals, letters and numbers gap arrangement.
3.3 Each unified digital code applies only to one product grade; on the contrary, each one corresponding to a Grade only numerals. when
After Grade canceled, under normal circumstances, the unified digital code corresponding to the original is no longer assigned to another product brands.
4 structure type
Unified digital code in the form of the following structure.
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