Zhejiang galvanized square tube factory price

45CrNi performance and 40CrNi close, due to the high carbon content, so its strength and hardenability were slightly increased for the manufacture of a variety of important pieces of quenched with 40CrNi similar purposes, such as manufacturing Crankshaft, cars, tractors spindle, even 50CrNi performance rods, valves and bolts can be manufactured more important than 45CrNi shafts, crankshafts, drive shafts and other 12CrNi2 carburizing low carbon alloy steel, high strength, high toughness and high hardenability, cold-deformed plastic medium, low temperature toughness, machinability and good weldability, have a tendency to the formation of white spots when large forgings, small tendency to temper brittleness higher manufacturing center suitable for toughness, strength requirements are not too complex in the force, carburizing or carbonitriding small parts, such as piston pins, bushings, putting, small shafts, pinion gear sets and other 12CrNi3 advanced carburizing steel, quenching and tempering or tempering after all have good mechanical properties, low temperature impact toughness, small notch sensitivity, machinability and weldability is still good, but temper brittleness, white spots higher sensitivity, should be subject to secondary hardening after carburizing, special circumstances need cold treatment for producing high surface hardness, good mechanical properties core section, various carburizing or carbonitriding heavy, impact, wear, etc. required alloying components, such as drive shafts, spindles, camshafts, mandrel, rod, gear , bushings, wheels, valve trays, oil pump rotor, piston rings up, piston pins, universal coupling crosshead important screw adjustment screws, etc.