40cr steel generalization; 40cr pipe is a hollow section, no seams around the circular steel. 40cr The tube is made of perforated solid through the capillary tube high-pressure alloy tube, and then by the hot-rolled, cold-rolled or cold call is made. 40cr steel with equal hollow section steel pipe and solid steel bar compared to the same torsional strength in bending, lighter 12cr1mov alloy tube, is an economic cross-section steel. According to the standard GB / T 3077-2008: chemical composition (mass fraction,%) C 0.37 ~ 0.44, Si 0.17 ~ 0.37, Mn 0.50 ~ 0.80, Cr0.80 ~ 1.10, Ni≤0.30. China GB standard steel is 40Cr, German DIN standard material number 1.17035 / 1.7045, German DIN standard steel 41Cr4 / 42Gr4, England 18 EN standard steel, BS standard steel 41Cr4, French AFNOR standard steel 42C4, French NF standard steel 38Cr4 / 41Cr4, Italy UNI standard steel 41Cr4, Belgium NBN standard steel 42Cr4, Swedish SS 2245 standard steel, American AISI / SAE / ASTM 5140 standard steel, JIS standard steel SCr440 (H) / SCr440 American AISI / SAE / ASTM standard steel 5140, the International Organization for Standardization ISO standard steel 41Cr4 27SiMn, alloy structural steel. Unified Digital Code: A10272 Standard: GB / T 3077-1999] The main characteristic properties of this steel is superior 30Mn2 steel, high hardenability, the critical quenching in water diameter of 8 ~ 22mm, good machinability alloy tube cold deformation plasticity and weldability medium; additional toughness of steel during the heat treatment to reduce small, but there is a very high strength and wear resistance, especially when water quenching is still high toughness; but this steel white point sensitivity large, there is a tendency to temper brittleness and heat sensitivity during the heat treatment. Examples of such applications] in the quenched steel is mainly state used for the manufacture of high toughness and wear resistance of hot stamping; also can be used in normalizing or hot-rolled supply status, such as tractors and other track pin. Alloy tube p91, virtue Pipe, Alloy Pipe Co., Ltd. Liaocheng by virtue of Industry. Alloy tube p91, virtue Pipe, alloy tube is virtue Pipe Co., Ltd. Liaocheng (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) this year introduced a new upgrade The above picture is for reference only, please call Tel picture on this page or to obtain the latest information, contact: Hvdroxide.