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Chemical Test Of Steel Plates

Chemical Test Of Steel Plates

Section 1 Overview of steel plates

Steel plates are widely used in construction, hardware, equipment, engineering machinery, machine tools, ships, aerospace, automobiles, locomotives, electronics, computers, electrical appliances, lamps and lanterns and other industries, and their use is expanding. Among them, the castings used for machinery are the largest in variety, the most complex in shape and the largest in quantity, followed by ingot molds for metallurgy, pipes for engineering and some tools for daily life, so the detection of steel pipes is particularly important. Many tests of steel plates in China still stop at the thickness deviation and unevenness of steel plates, and the science standard inorganic testing center specializes in the analysis and testing of various types of steel pipes. The center mainly conducts testing and analysis according to widely accepted standards at home and abroad, such GB, ASTM, TP, ISO, UOP, JIS, EN, etc..Based on strong technical strength, the center can help develop new detection methods and conduct related research and analysis according to the special requirements of customers.

Section 2 Test category

There are also many types of steel plates. In terms of production method, they can be divided into hot rolled steel plates and cold rolled steel plates; in terms of surface characteristics, they can be divided into galvanized plates( hot galvanized plates and electrolytic galvanized plates ), tin-plated plates, composite steel plates, and color-coated steel plates; in terms of their use, they can be divided into bridge steel plates, boiler steel plates, shipbuilding steel plates, armored steel plates, automotive steel plates, roof steel plates, structural steel plates, electrical steel plate( Silicon steel sheet ), spring steel plates, heat resistant steel plates, and alloy steel plates.

Section 3 Test items and standards

The testing items of the center mainly include the following items: brand identification, chemical composition, mechanical property, physical property and chemical property detection. The elements of chemical composition analysis are mainly carbon C, manganese Mn, silicon Si, sulfur S, phosphorus P and other alloy elements. Mechanical testing mainly involves yield point, tensile strength, elongation and fatigue test. Physical performance testing mainly involves density, melting point, thermal expansion, thermal conductivity, electrical conductivity and magnetism. Chemical properties are mainly high temperature resistance, low temperature resistance, acid resistance, alkali resistance and oxidation resistance. In summary, multiple tests can basically meet the requirements of different materials of steel plate for different purposes. The following test standards are mainly used: GB/T700-2006 carbon structure steel, GB/T3274-2007 carbon structure steel and low-alloy structure steel, and hot-rolled thick steel plates and belts, GB/T17505-1998 general technical requirements for the delivery of steel and steel products and GB/T18253--2000 types of inspection documents of steel and steel products. 
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