What is the material of 19mn6, and the difference between 65Mn and 19MN5 material

19MN6 uses: the German standard number of high-temperature structural steel, equivalent to the national standard Q345R and the European standard P355GH, 19MN6 high-temperature and high-pressure boiler steel plate is mainly used for the production of power station boiler drum drum, and the production is organized according to the requirements of DIN17155 standard, and the physical quality has reached and exceeded the foreign advanced level. Production process:

Electric furnace smelting, LF refining, VD vacuum treatment, die casting, ingot heating, rolling, normalizing, tempering, flaw detection, steel plate cutting inspection, warehousing. Executive standard: DIN17155

German standard heat-resistant steel plate, this standard is mainly used for the manufacture of steam boiler equipment, pressure vessels, large pressure pipes and similar components of hot-rolled steel plate and steel strip. Heat-resistant steel plate: refers to a steel grade that can show characteristics at higher temperatures, local temperatures up to 600°C, and even under time load.

The shape of the product is defined in the European Coal and Steel Community standard Euronorm 79. The weight of all steel grades in the standard is calculated according to the specific gravity of kilogram decim3. The steel grades under the standard are:

UHI, Hi, HII, 17Mn Mn Mo3 is usually hot-rolled and normalized, and 13CrMo CRMO910 is normalized and quenched and tempered. Related regulations: (TRB) Technical regulations for pressure vessels, technical regulations for TRD steam boilers, and technical regulations for high-pressure gases in TRG.

If the test temperature is not specified, the test should be performed at 300°C.

19MN6 is a steel plate for boilers and pressure vessels, according to the standard DINI 7155

Summary. 65MN Spring Steel Standard: GB T 1222-1984 Characteristics and Scope of Use:

Manganese improves hardenability, 12mm steel oil can be hardened, the surface decarburization tendency is smaller than that of silicon steel, and the comprehensive mechanical properties after heat treatment are better than carbon steel, but there is overheating sensitivity and tempering brittleness. It is used as a variety of flat and round springs, seat cushion springs, spring springs of small sizes, and can also be used to make spring rings, valve springs, clutch springs, brake springs and cold-drawn steel wire cold-rolled coil springs.

65MN spring steel standard: GB T 1222-1984 Characteristics and scope of use: manganese to improve hardenability, 12mm steel oil can be quenched, the surface of the socks has a smaller decarburization tendency than silicon steel, after heat treatment, the comprehensive mechanical properties of hail Haoye are better than carbon steel, but there is overheating sensitivity and tempering brittleness.

It can be used as a variety of small size flat and round springs, seat cushion springs, spring springs, spring rings, valve springs, clutch springs, brake springs and cold-drawn steel wire cold-rolled coil springs.

19Mn565MN spring steel 19Mn5 implements the DIN standard of Germany, the steel is 16mnr19mn5 of our country is the introduction of steel from West Germany, and the yield strength is 300MPa grade of carbon manganese steel plate. Its smelting, welding performance and rolling forming properties are good. 19mn5 heat-resistant steel is used in the manufacture of steel plates for large boiler steam drums and pressure vessels, as well as boiler steel pipes for wall temperature 520.

What standard does the 65mn spring steel belt implement.

65Mn spring steel strip implementation standard: GB T spring steel, manganese to improve hardenability, 12mm steel oil can be quenched, the surface decarburization tendency is smaller than silicon steel, the comprehensive mechanical properties after heat treatment are better than carbon steel, but there is a lack of overheat sensitivity and tempering brittleness. It can be used as a variety of small size flat and round springs, seat cushion springs, spring springs, and can also be used to make spring rings, valve springs, clutch reeds, brake springs and cold-drawn steel wire volt punch cold-rolled coil springs.

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A, 29Mn5 is a high-quality structural steel material, and 30Mn5 material belongs to a high-quality structural steel material. 30mn5 is a German grade, which is equivalent to a Chinese grade of 30mn2 high-quality structural steel, with a higher carbon content than low-carbon steel. After quenching and tempering, 30mn5 has high strength, toughness and wear resistance, and good static strength and fatigue strength.

The plasticity is medium during cold deformation, and the machinability and weldability are acceptable, but the parts need to be preheated to more than 200 before welding. The wire drawing, cold heading and heat treatment process has good performance, high hardenability, critical quenching diameter in oil, and small quenching deformation, but there are overheating, decarburization sensitivity and tempering brittleness. This steel has high strength, toughness and wear resistance after quenching and tempering, and the static strength and fatigue strength are also good.

<>16mn is an alloy structural steel with a carbon content. Other elements include silicon, vanadium, niobium and titanium, also known as low-alloy high-strength structural steel, with a grade of Q345B, a yield point of 343MPa and a density of cubic centimeters. The content of sulfur and phosphorus in 16mn is relatively high, both of which are harmful elements in steel, and it is easy to make the steel pipe green in the low temperature environment, which affects the working performance, and the advantage is that the comprehensive performance is good, the low temperature performance is good, the cold stamping performance is good, the welding performance and the machinability are good.

Now it is widely used in mining, transportation, chemical and other machinery.

16Mn steel plate belongs to a steel plate made of 16Mn low-alloy structural steel.

The comprehensive mechanical properties, welding performance and low-temperature impact toughness of 16Mn steel plate, as well as cold stamping and machinability are also quite good, in fact, 1Mn steel contains more components than A3 steel, in addition to making 16Mn steel comparable to A3 steel in terms of plasticity and welding performance, etc., but also improves some advantages of 16Mn steel in other aspects of filial piety.

16Mn steel plate has higher yield strength, better corrosion resistance, low temperature impact toughness, in these aspects 16Mn steel has better quality than A3 steel, so people will also choose 16Mn steel plate when choosing. The notch sensitivity of 16mn steel is greater, when there is a notch, it will be very easy to cause cracks, and the fatigue resistance is poor, so when processing, it is necessary to pay attention to choosing a reasonable processing method to avoid carefully affecting the quality of the product.

Introduction to the composition content of 16mn steel plate:

16MN is called low-alloy high-strength structural steel, which is a material in steel. The carbon content of low-alloy high-strength structural steel is manganese, silicon, vanadium, niobium and titanium, etc., which are the main alloying elements. 16mn steel has less alloy content and generally does not need to be preheated before welding.

16Mn steel is the most widely used low-alloy steel in China, and the 16Mn steel used to make welded structures are both 16MNr and 16Mng steel.

Its total alloy content is <3%, and it is divided into 4 grades such as 450MPa according to the strength, mainly Q295, Q345, Q390, Q420, which is the yield of the Chinese pinyin capital prefix, followed by the number of the minimum yield point S value of the grade, and the subsequent symbol is divided into A, B, C, D four according to the steel impurity element sulfur and phosphorus content from high to low and accompanied by the change of carbon and manganese elements. Among them, grade A and B steel are usually called 16MN.

The above content reference: Encyclopedia - 16mn

16MN is the old national standard grade, and now it is classified as low-alloy high-strength structural steel, and the current grade is called Q345, but Q345 steel is the replacement of the old grade of 12MNv, 14MNNB, 18NB, 16MNre, 16MN and other steel grades, rather than only replacing 16MN steel. In terms of chemical composition, 16MN is also different from Q345. More importantly, there is a large difference in the size of the thickness grouping of the two steels according to the different yield strengths, which will inevitably cause changes in the allowable stress of certain thicknesses of the material.

Therefore, it is not appropriate to simply apply the allowable stress of 16MN steel to Q345 steel, but to re-determine the allowable stress according to the new steel thickness grouping size.

The proportion of the main constituent elements of Q345 steel is basically the same as that of 16Mn steel, except that V, Ti, and NB trace alloying elements are added. A small amount of V, Ti and Nb alloying elements can refine the grains, improve the toughness of the steel, and greatly improve the comprehensive mechanical properties of the steel. Because of this, the thickness of the steel plate can be made larger.

Therefore, the comprehensive mechanical properties of Q345 steel should be better than that of 16Mn steel, especially its low-temperature performance is not available in 16Mn steel. The allowable stress of Q345 steel is slightly higher than that of 16Mn steel.

The carbon content is less than or equal to, and this type of steel guarantees its mechanical strength at the factory, without requiring the alloy composition, that is, it is directly selected according to the mechanical strength required by the design, without heat treatment. The implication of Q345 is that the yield strength of the material can reach 345MPa

16MN is the old standard name for Q345, which is a type of steel. It is a low-alloy steel (C< widely used in bridges, front shelter vehicles, ships, buildings, pressure vessels, etc. Q represents the yield of this material, and the 345 behind it refers to the yield value of this material of Huimeng, which is empty around 345.

and will decrease its yield value as the thickness of the material increases.