A wide range of steel products, how can it be different? Very simple, the corresponding grades can generally understand the basic properties of the product. Then the product grades are showing how it? In heat-resistant steel as an example to illustrate this.

China's steel product representation in the national standard descriptions, product brands named using the phonetic alphabet, chemical element symbols and Arabic numerals combination, where the phonetic alphabet used to represent the product names, uses, properties and process methods. Stainless steel grades is to use this method to express the same heat-resistant steel grades that way and stainless steel, generally are based on the provisions of the alloying element symbols and Arabic numerals.
As can be seen, usually in the first grade with an average carbon content expressed Arabic numerals; and when the average content of alloying elements is less than 1.50%, the grade indicated only element symbols, generally do not indicate the content; for specific applications, technology the method of heat-resisting steel or cutting in front of special steel grades to be labeled, or symbols specific process for cutting steel.