Q235A carbon steel plate sheet equivalent grade astm

European standard high strength EN10025-6 S690QL steel plates are designed to provide excellent welding and bending properties. Due to its high strength, it enables design of lighter, more durable and efficient products and structures with S690QL steel plates and Q235A carbon steel plate sheet.

The main function of boron in Q235A carbon steel plate sheet and so on steel is to increase the hardenability of steel, so as to save other rare and precious metals, such as nickel, chromium and molybdenum. For this purpose, the boron content is generally regulated in the range of 0.001% - 0.005%. It can replace 1.6% nickel, 0.3% chromium or 0.2% molybdenum. It should be noted that molybdenum can prevent or reduce temper brittleness, while boron slightly promotes temper brittleness, so molybdenum can not be completely replaced by boron.

According to different purposes, the thin steel sheets are rolled from billets of different materials. Commonly used materials include plain carbon steel, such as Q235A carbon steel plate sheet, high-quality carbon steel, alloy structural steel, carbon tool steel, stainless steel, spring steel, and silicon steel for electrical purposes. The thin steel sheets are mainly used in the automobile industry, aviation industry, enamel industry, electrical industry, machinery industry and other sectors. In addition to delivery directly after rolling, there are also pickled, galvanized and tinned thin steel sheets.

In October, steel production decreased month-on-month, port inventories continued to rise, iron ore demand intensity weakened slightly, and iron ore prices continued to fall. According to the monitoring of the China Iron and Steel Industry Association, at the end of October, the China Iron Ore Price Index (CIOPI) was 421.41 points, down 11.06 points month-on-month, or 2.56%. The month-on-month decline continued, with a decrease of 0.08 percentage points higher than in September.