6. Representation of high strength low alloy steel ① basically the same as alloy structural steel. ② for professional use high strength low alloy steels, it should finally be marked in the steel. For example 16Mn steel Binzhou stainless steel sheath, special steel for the bridge as "16Mnq", a special steel automobile frames as "16MnL" Binzhou stainless steel plug, special steel pressure vessel is "16MnR". Stainless steel screws, stainless steel double carriage, stainless steel adapter 9. Alloy tool steel and high speed tool steel alloy tool steel ① steel average carbon content is ≥1.0%, the carbon content is not marked; when the average carbon content of <1.0% Binzhou stainless steel pin, to a few thousandths. For example Cr12, CrWMn, 9SiCr, 3Cr2W8V. ② steel alloying element content representation, basically the same as alloy structural steel. But for low chromium steel alloy tool steel, the chromium content of a few thousandths of Binzhou stainless steel, and a number representing the content before the "0", so that it and the general element content by a few per cent The method to distinguish. For example Cr06. ③ high-speed steel, tool steel carbon content is generally not marked, marked only a few percent of the average content of various alloying elements. Such as steel, tungsten high speed steel is expressed as "W18Cr4V". Steel numbers preceded by the letter "C" who indicated that their carbon content higher than the highest "C" common steel. Stainless steel screws, stainless steel screws 316 bolts, stainless steel rivets, stainless steel rivet nut. Binzhou Binzhou stainless steel bolt _ _ Jinan Road ground is provided by Jinan Daoqin Trading Company. Jinan Daoqin Trading Company (www.daoqinshangmao.com) (www.daoqinshangmao.com) strong, credible, in Jinan, Shandong hardware accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinan Road ground into the brilliant and you work for a better future!