Year1
- 产品规格：
- 齐全
It is my country's standard steel grade. Steel is one of the most widely used steels in the machinery manufacturing industry. After quenching and tempering treatment, it has good comprehensive mechanical properties, good low-temperature impact toughness and low notch sensitivity. Steel has good hardenability and can be hardened to Ф during water quenching and to Ф～ during oil quenching. In addition to quenching and tempering, this steel is also suitable for cyanidation and high-frequency quenching. The cutting performance is better. When the hardness is ~, the relative cutting workability is %. This steel is suitable for making medium-sized plastic molds.
Chemical composition
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Mechanical properties
Sample blank size:
Heat treatment:
First quenching heating temperature (℃): Coolant: oil
Second time Quenching heating temperature (℃):
Tempering heating temperature (℃):
Tensile strength:
Yield point (/):
Elongation after break (/%):
Reduction of area (/%):
Impact absorbed energy (/):
Brinell hardness (annealed or high temperature tempering state):
Characteristics
Medium carbon Quenched and tempered steel cold heading mold steel. The steel is moderately priced and easy to process. After appropriate heat treatment, it can obtain certain toughness, plasticity and wear resistance. Normalizing can promote the spheroidization of the structure and improve the cutting performance of the blank with a hardness smaller than that of the blank. Tempered at a temperature of ~℃, the steel has the best comprehensive mechanical properties. This steel has higher hardenability than steel and is suitable for surface hardening treatments such as high-frequency quenching, flame quenching, etc.
Uses
After quenching and tempering, this steel is used to manufacture mechanical parts that bear medium loads and work at medium speeds, such as steering knuckles, rear axles of automobiles, and gears, shafts, worms, and splines on machine tools. Shafts, center sleeves, etc. are quenched and tempered at medium temperature and used to manufacture parts that withstand high load, impact and medium speed operation, such as gears, spindles, oil pump rotors, slides, collars, etc. After quenching and tempering at low temperature, they are used to manufacture Parts such as worms, spindles, shafts, collars, etc. that bear heavy loads, have low impact and have wear resistance, and have a physical thickness of less than 100% in cross-section are used to produce high surface hardness and wear resistance after quenching and tempering and high-frequency surface quenching. Parts such as gears, sleeves, shafts, spindles, crankshafts, spindles, pins, connecting rods, screws, nuts, intake valves, etc. In addition, this kind of steel is suitable for manufacturing various transmission parts that undergo carbonitriding treatment, such as gears and shafts with larger diameters and good low-temperature toughness.
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