Q235 ordinary carbon structural steel is also known as A3 steel. Q235 is a kind of steel material. q stands for the yield limit of this material, and the 235 at the end of it refers to the yield value of this material, which is about 235MPa. And with the increase of the thickness of the material will make its yield value decreases.
Use: 1, a large number of applications in construction and engineering structures. Used to make reinforcing steel or construction of factory building frame, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc., but also a large number of used as a performance requirements are not too high mechanical parts.
2, can be used for a variety of mold handle and other unimportant mold parts.
3, the use of Q235 steel as punch material, quenched without tempering directly use, hardness of 36 ~ 40HRC, to solve the phenomenon of the punch broken in use.
45# is a grade of steel is a kind of high-quality carbon structural steel, corresponding to the Japanese standard S45C, the American standard: 1045, the German standard C45. Its characteristic is compared with the ordinary A3 steel, has a higher strength, resistance to deformation.
Use: 45 steel plate quenched without tempering before the hardness is greater than HRC55, after heat treatment, and then tempering can reach HRC42-46, so as to ensure that it is a good mechanical properties, but also to get the hardness of the surface requirements for the production of small cross-section tempered parts to withstand a large load and stress less large normalized parts, such as tails, columns, needles and other components.
T12A carbon tool steel, the steel is over **** precipitation steel, due to the high carbon content, after quenching there is still a large excess carbide, machinability is good, cheap, easy to source.
Use: but its disadvantages are low hardenability, poor wear resistance, quenching deformation. Therefore, only suitable for the manufacture of some small size, simple shape, light load tools and requirements of the hardened layer is not deep and maintain a high toughness of the cold like mold.
40Cr is China's GB standard steel grade, 40Cr steel is one of the most widely used steel in the machinery manufacturing industry. After tempering treatment has good overall mechanical properties, good low-temperature impact toughness and low notch sensitivity.
Use: 1. This steel is used to manufacture after tempering to withstand moderate loads and medium-speed mechanical parts, such as automobile steering knuckles, rear half shafts, as well as machine tools, gears, shafts, worm gears, spline shafts, top bushings, etc.;
2. Quenched and tempered at medium temperatures used in the manufacture of withstand high loads, impacts and medium-speed parts, such as gears, spindles, rotor of oil pumps, Slider, rings, etc.;
3. Quenched and tempered at low temperatures for the manufacture of heavy loads, low impact and wear resistance, the cross-section of the entity thickness of 25mm or less parts, such as worm, spindle, shaft, rings, etc.;
4. Tempered and high-frequency surface quenching is used for the manufacture of high surface hardness and abrasion-resistant without great impact of the parts, such as gears, sleeves, shafts, spindle, crankshafts, mandrels
GCr15 refers to a high-carbon chromium bearing steel with low alloy content, which has high hardness, uniform organization, good wear resistance and high contact fatigue performance after quenching and low-temperature tempering.
Use: Used to make all kinds of bearing rings and rolling elements. For example: the production of internal combustion engines, electric locomotives, automobiles, tractors, machine tools, steel mills, drilling machines, mining machinery, general machinery, and high-speed rotation of a high load mechanical transmission bearings of steel balls, rollers and rings. In addition to do ball, bearing rings.
W18Cr4V for tungsten high-speed steel, with high hardness, red hardness and high temperature hardness. Its heat treatment range is wide quenching is not easy to overheat, heat treatment process is not easy to oxidize decarburization, grinding performance is better.
Use: the disadvantage of serious carbide segregation, low thermoplastic, etc., can only do complex shape of small tools.
ZG 270-500 is a kind of medium-carbon cast steel, a certain degree of toughness and plasticity, strength and hardness, cutting good, weldable, casting performance is worse than the low carbon steel.
Use: Widely used in the production of flywheels, vehicle hooks, hydraulic press work cylinder, rack, steam hammer cylinder, bearing housing, connecting rod, box, crankshaft.
HT150This cast iron in most or all of the carbon in the free state of flake graphite exists, its fracture is gray, so it is called gray cast iron. It has certain mechanical properties and good machinability.
Use: casting performance is good, easy process; casting stress is small, without artificial aging treatment; a certain degree of mechanical strength and vibration damping excellent; used for medium strength requirements of the parts.
H62 brass means that the average copper content of 62% of the ordinary brass, in the ordinary brass on the basis of adding other elements of copper alloy called special brass, still with "H", followed by the chemical symbols of the other added elements and the average composition.
Use: can do all kinds of deep drawing and bending of the manufacturing of stressed parts, such as pins, rivets, washers, nuts, conduits, barometer springs, screens, radiator parts.
Baidu Encyclopedia - Q235 metal introduction ?
? Baidu Encyclopedia-45 metal introduction
? Baidu Encyclopedia-T12A metal introduction?
? Baidu Encyclopedia-40Cr metal introduction
? Baidu Encyclopedia-GCr15 metal introduction
? Baidu Encyclopedia-W18Cr4V metal introduction
Baidu Encyclopedia-ZG 270-500 metal introduction