Types and uses of high alloy steel
High alloy steel refers to alloy steel with more than 10% alloying elements in the steel. Its brand name is prefixed with the letter X, followed by a number representing the average carbon content (in tens of thousands) and alloy element symbols (arranged by content), and finally the average percentage value indicating the content of each major alloy element (rounded to an integer).
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Classification of carbon steel
Carbon steel is an iron carbon alloy with a carbon content ranging from 0.0218% to 2.11%. Also known as carbon steel. Generally, it also contains small amounts of silicon, manganese, sulfur, and phosphorus. Generally, carbon steel with higher carbon content has higher hardness and strength, but lower plasticity.
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The industrial economy grew rapidly in the first half of the year! Which industry has injected new impetus into Qingtian?
Since the beginning of this year, our county has fully implemented the spirit of the "Two Mountains" development conference in the city, firmly adhered to the prominent guidance of high-quality and green development, and achieved a "half year red" from January to June, with the added value of the secondary industry reaching 5.49 billion yuan, an increase of 10.7%, achieving rapid growth.
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National standard for duplex stainless steel
The new standard GB/T 20878-2007 "Grades and Chemical Composition of Stainless Steel and Heat Resistant Steel" in China has added many grades of duplex stainless steel. For example: 14Cr18Ni11Si4AlTi, 022Cr19Ni5Mo3Si2N, 12Cr21Ni5Ti. More grades can be found in the standard.
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The Use and Properties of Low Alloy Steel
Low alloy steel refers to alloy steel with a total alloying element content of less than 5%. Low alloy steel is relative to carbon steel, and is intentionally added with one or several alloying elements to improve the performance of steel based on carbon steel. When the amount of alloy added exceeds the normal production method of carbon steel, this type of steel is called alloy steel. When the total alloy content is less than 5%, it is called low alloy steel, ordinary alloy steel is generally b
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The Historical Development of Duplex Stainless Steel
Duplex stainless steel (DSS) refers to stainless steel with ferrite and austenite each accounting for about 50%, and generally requiring at least 30% of the lower phase content. In the case of low C content, the Cr content ranges from 18% to 28%, and the Ni content ranges from 3% to 10%. Some steels also contain alloying elements such as Mo, Cu, Nb, Ti, and N.
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