42CrMo alloy steel pipe knowledge _ Liaocheng Xinfu Xin Pipe Industry Co., Ltd. to provide a two-digit number at the beginning of the steel indicates the carbon content of steel, expressed in terms of average carbon content, such as 40Cr, 42CrMo alloy steel pipe 2 major alloying elements, except In addition to individual microalloying elements, it is generally expressed as a few percent. When the average alloy content is less than 1.5%, only the symbol of the element is generally marked in the steel number, and the content is not marked, but in special circumstances, it is easy to cause confusion. After the element symbol, the number “1†may also be marked, for example, the steel number. "12CrMoV" and "12Cr1MoV", the former chromium content of 0.4-0.6%, the latter is 0.9-1.2%, the remaining components are the same. When the average content of alloying elements is ≥ 1.5%, ≥ 2.5%, ≥ 3.5%, etc., the content shall be indicated after the element symbol, which may be expressed as 2, 3, 4...etc. For example 18Cr2Ni4WA.
(3) Alloying elements such as vanadium V, titanium Ti, aluminum AL, boron B, and rare earth RE in steel are microalloying elements. Although the content is very low, they should be marked in the steel number. For example, in 20MnVB steel. Vanadium is 0.07-0.12% and boron is 0.001-0.005%.
4 High-grade steel should be added "A" at the end of the steel to distinguish it from ordinary high-grade steel.
5 special purpose alloy structural steel, steel crown (or suffix) represents the symbol of the steel use. For example, special 30CrMnSi steel for rivets, the steel number is ML30CrMnSi.
Liaocheng Xinfu Xin Pipe Industry Co., Ltd. is a professional manufacturer of stainless steel pipe, alloy steel pipe manufacturers, in Shandong to find stainless steel pipe factory and alloy steel pipe factory, there are stock reserves, high quality and low price you have to choose Xinfu Tube industry, phone:.
42CrMo alloy steel pipe weight calculation formula: [(outer diameter - wall thickness) * wall thickness] * 0.02466 = kg / meter (weight per meter).
Reversible Exterior Door Frame
Reversible Exterior Door Frame ,Exterior Door Jamb ,Front Door Replacement ,Front Door Frame
Wooden & Timber Door Co., Ltd. , http://www.china-steeldoors.com