GB/T 34647-2017 in English
VALIDTemper designation system for titanium and titanium alloy
- Issued on:2017-09-29
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 34647-2017钛及钛合金产品状态代号》由TC243（全国有色金属标准化技术委员会）归口，TC243SC3（全国有色金属标准化技术委员会稀有金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
GB/T 34647—2017: In-depth analysis of the status codes of titanium and titanium alloy products
Background and significance of standard formulation
The National Standard of the People's Republic of China GB/T 34647—2017 "Titanium and Titanium Alloy Product Status Codes" is to standardize the naming and identification of heat treatment, form and surface state of titanium and titanium alloy products. This standard is under the jurisdiction of the National Technical Committee for Standardization of Nonferrous Metals and was issued and implemented in 2017.
As the important role of titanium and titanium alloys in aerospace, marine engineering, medical and other fields becomes increasingly prominent, the quality requirements for titanium materials are getting higher and higher. A unified status code system helps manufacturers, scientific research institutions and users to achieve information exchange and ensure product quality and consistency.
Comparative analysis of standard frameworks
| Standard dimensions | GB/T 34647—2017 | Comparative dimensions |
|---|---|---|
| Heat treatment state | Z (cast state), HIP (hot isostatic pressing state), M (annealed state), etc. | Ununified state identification, many companies customize |
| Form state | ZD (ingot), PS (plate), B (bar), etc. | Lack of unified naming rules |
| Surface state | AP (pickling), SB (sandblasting), S (sanding), etc. | Surface treatment processes are diverse and the markings are confusing |
Detailed explanation of standard content
1. Heat treatment state and code
- Cast state (Z): The state produced by the casting process without any pressure or heat treatment.
- Annealed state (M): The state after annealing heat treatment.
- Recrystallization annealing state (MR): The state after recrystallization annealing heat treatment.
2. Form and code
- Plate (PS): Titanium and titanium alloy plates produced by hot rolling or cold rolling.
- Bar (B): Titanium and titanium alloy bars produced by forging, extrusion or rolling.
- Profile (X): T-shaped, U-shaped and other profiles produced by extrusion or rolling.
3. Surface state and code
- Sandblasting (SB): Use high-speed sand flow to impact and clean or roughen the surface of the substrate.
- Pickling (AP): The state after the surface pollution such as oxide layer and oil is cleaned by acid etching.
- Sanding (S): The surface of the substrate is cleaned or roughened by grinding with abrasive belt or grinding wheel.
Recommendations for the implementation of the standard
1. Enterprise level
- Establish an internal training mechanism to ensure that relevant personnel are familiar with and master the terms and contents of GB/T 34647—2017.
- Update the product identification system and uniformly adopt the state codes specified in the standard.
- Optimize the production process and apply the state codes to record and manage at key process nodes.
2. Industry level
- Promote industry standardization and promote information exchange and sharing among industries.
- Organize cross-enterprise technical exchange meetings to share standard implementation experience.
- Establish a unified quality inspection and certification system to ensure product quality consistency.
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