Cangzhou seamless steel pipe seamless steel pipe _ _GB/8163 dry 100000000

No. 45 is a high-quality carbon steel structural steel, the hardness is not high machinability 16MN seamless template mold used to do, shoot the child, guide posts and other GB/8163 seamless steel tubes, subject to heat treatment. No tempering 1.45 before hardening of steel, hardness greater than HRC55 (up to HRC62) is qualified. The actual application of the maximum hardness of HRC55 (induction hardening HRC58). 2.45 not to use heat treatment of steel carburizing. After quenching parts with good mechanical properties, is widely used in a variety of important structural parts, especially those under the alternating load rod work, bolts, gears and shafts, etc. However, the surface hardness is low, do not wear. Available quenching + surface hardening to improve part surface hardness. Carburizing treatment is generally used for surface abrasion, impact-resistant heavy duty core parts thermal expansion seamless steel pipe, its wear resistance than quenching + surface hardening high. The surface carbon content of 0.8 - 1.2%, the core is generally 0.1 - 0.25% (0.35% used under special circumstances). After heat treatment, the surface can get very high hardness (HRC58 - 62), low core hardness, impact resistance. If 45 carburizing steel seamless pipe, after quenching the core appears brittle martensite, losing the advantages of carburizing process. Carburizing process using materials, carbon content is not high now, to 0.30% of the core may have reached a very high intensity, applications are rare. 0.35% have never seen an instance, only in the textbooks are introduced. + Can be used quenched and tempered high-frequency surface hardening process, wear slightly worse than the carburizing. Standard: GB/T8162-- China National Standard ASTM A53 - American Society for Testing and Materials standard ASME SA53 - American Boiler and Pressure Vessel Code Uses: used to make pipes, containers, equipment, pipe fittings and mechanical structure seamless steel pipe major production of steel grades: 10,20,35,45, Q345, 15CrMo, 12Cr1MoV, A53A, A53B, SA53A, SA53B etc. _GB/8163 Cangzhou seamless steel seamless steel pipe industry _ Dry million provided by the dry 100000000. This information consists of: one hundred million dry mounds Industry Co., Ltd. (www.qygy.cc) offer, we are Commercial Union membership, the integrity of the whole network authentication provider. Feel free to contact us, Contact: Peng Wenjun