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For example(garnet abrasive), the grade of free cutting steel with an average carbon content of 0.15% is expressed as "Y15". For free cutting steel with higher mass fraction of sulfur or phosphorus added, manganese element symbol shall be added after the symbol y and Arabic numerals. The grade of high quality carbon structural steel with average carbon content of 0.20% is "20A"(alumina blasting), respectively, and its brand name is "20crni3".

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The grade of special low alloy high strength structural steel can also use two Arabic numerals (representing the average mass fraction of carbon, in tens of thousands)(black silicon carbide). For example, the grades of carbon structural steel are q235af and q235bz; the grades of low alloy high strength structural steel are Q345C and Q345D(white aluminum oxide dental). The expression method of alloy spring steel is the same as that of alloy structural steel.(cheap abrasive garnet sand wholesale suppliers indonesia)

Weathering steel is a kind of low alloy high strength structural steel with atmospheric corrosion resistance, and its spleen number is "q340nh"(green silicon carbide). For example, if the average mass fraction of carbon is 0.40%, and the mass fraction of manganese is 1.20% ~ 1.55%, the grade of free cutting steel is expressed as "y40mn"(aluminium oxide abrasive powder). For example, the grade of killed steel with an average carbon content of 0.45% is expressed as "45".

(cheap abrasive garnet sand wholesale suppliers indonesia)For example, the grade of free cutting steel with 0.15% carbon and 0.15% - 0.35% cap is represented as "y15p%"(pink aluminum oxide); the grade of free cutting steel with 0.45% carbon and 0.002% - 0.006% calcium is represented as "y45ca". The results show that the segregation of carbides is serious in the bonding process(brown fused aluminum oxide suppliers), and the more banded carbides are in the hot rolled products without diffusion annealing, such as "30CrMnSiA".

For example(black aluminum oxide), if the average mass fraction of carbon, chromium, manganese and silicon are 0.30%, 0.95%, 0.85% and 1.05% respectively, the grade of alloy structure copper is expressed as "30CrMnSi"; the grade of alloy structural steel with the average mass fraction of carbon, chromium and nickel is 0.20%, 0.75% and 2.95%(white fused alumina micro powder). High quality alloy structural steel is indicated by adding a symbol "a" at the end of the grade.(cheap abrasive garnet sand wholesale suppliers indonesia)

For special grade high-quality alloy structural steel, the symbol "e" shall be added at the end of the grade(white aluminium oxide), for example, "30crmnsie" special alloy structural steel shall be added with the symbol representing the product use specified in table 2-8 at the head (or tail) of the grade(white aluminum oxide blast media). For free cutting steel containing calcium and lead, the element symbol shall be added after the symbol "Y" and two Arabic numerals.

(cheap abrasive garnet sand wholesale suppliers indonesia)For example, the grade of Jinluo steel with the average mass fraction of carbon(brown fused aluminum oxide), chromium, manganese and silicon being 0.30%, 0.95%, 0.85% and 1.05% respectively is expressed as "ml30crmnsi". For example, if the average mass fraction of carbon, silicon and manganese are 0.60%, 1.75% and 0.75% respectively, the grade of spring steel is expressed as "60s2ma"(silicon carbide grinding). Alloy structural steel and alloy spring steel.