What is equivalent material of S690QL specification

The carbon tool steel thick plate is made of carbon tool steel and is made by hot rolling. This carbon tool steel has good cold and hot processing performance, high hardness and plastic resistance, low production cost and wide range of uses. S690QL specification, Carbon tool steel is usually delivered in an annealed or high temperature tempered state. It is mainly used to manufacture cutting tools, measuring tools and molds with low cutting speed, simple shape and low precision. The thickness of the steel plate is 4.5-25mm, and the width and length comply with GB709 regulations.

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Magnetic particle flaw detection is only suitable for detecting surface defects, which means that by laying magnetic powder on the surface of the equipment and using its aggregate shape on the surface defects of the magnetic material equipment to determine the position, size and shape of the defect. This S690QL specification method has a relatively low cost and is easy for steel production enterprises to adopt in batches. However, for special steel profiles with deeper thickness, whether this method is used to detect hidden defects is yet to be verified.

Will S690QL specification, stainless steel rust? Under normal conditions, stainless steel will not rust. It has a great relationship to the composition of stainless steel. In addition to iron, stainless steel has chromium, nickel, aluminum, silicon and so on elements. Scientists have found that the more uniform the internal structure of steel, the closer the various components are linked, and the more difficult it is for corrosive substances to invade. In addition, a layer of oxide protective film is attached to the surface of stainless steel, which is just like wearing armor on steel, it is not easy to rust.

When providing technical services on site, the after-sales personnel shall strictly abide by the safety rules and regulations of the construction site, consciously take safety protection measures (such as wearing safety helmet when entering the construction site), accept the supervision and management of the site; without permission on the construction site, they shall not dismantle, smear or damage any goods; the commissioning of contract goods shall be carried out under the supervision of the site supervisor If necessary, it shall be approved by the site supervisor or the person in charge of the project department.