深拉伸用钢：第一部分
非铁合金的热机械处理(TMT)：第一部分
DataPLUS 模块提供上万种金属材料和非金属材料的腐蚀数据、焊接性能、尺寸与公差信息以及涂层信息。 点击这里了解更多。
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Prof. Dr. Viktor Pocajt, CEOKey to Metals AG
The required material characteristics of TMCP steels are very specific and therefore fall into a small yet extremely high-tech group of steels. What makes these materials unique is that they possess very impressive mechanical properties and overall toughness which are in turn combined with excellent cold-workability and weldability characteristics making it possible for them to perform in the most demanding of conditions.
Generally, offshore structural steels require superior low temperature toughness for the base metal and the welded joints in view of the need for prevention of brittle failure. Of particular importance are Charpy impact properties, but also CTOD (crack tip opening displacement) properties subject to the local brittle zones (hereinafter referred to as ‘LBZ’) are also of high importance. Therefore, the establishment of high toughness and high strength through fining the microstructure of HAZ (heat affected zone), and the reduction of LBZ or the suppression of its creation has been a one of the major issues of recent times.
Dillinger Hütte GTS supplies heavy plate conforming to all widely used standards, including EN 10225, BS 7191, API and NORSOK. The range of grades available extends from normalized, via water-quenched and tempered, up to and including TMCP steels. The outstanding mechanical strengths and associated toughness of these materials meet even the most demanding specifications for offshore structures used in the North Sea. But what makes these steels true high-tech materials is the combination of these properties with optimum workability, and above all, cold-workability and weldability. Please see the table of materials.
As an illustration in the tables below you will find a comparison of the steel grade 355 under delivery conditions normalized (N) and thermo mechanically rolled (TMCP) comparing in detail, the tensile and yield strength and toughness properties of each delivery condition.
Date Published: Nov-2012
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Heat treatment diagrams are available for a huge number of materials in the Total Materia database.
Heat treatment diagrams covering hardenability, hardness tempering, TTT and CCT can all be found in the standard dataset.
To select materials by special properties, you can use the special search check boxes in the Advanced Search module.
To define the search criteria, all you have to do is select the country/standard of interest to you from the ‘Country/Standard’ pop-up list and to check ‘Heat Treatment Diagram’ box, situated in the Special Search area of the form in the lower part of the Advanced Search page.
Click Submit.
After selecting the material of interest to you, click on the Heat Treatment link to view data for the selected material. The number of heat treatment records is displayed in brackets next to the link.
All available heat treatment information will then be displayed for the chosen material.
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