Steel 40x. Its description and scope

Steel is one of the most important structural metals. It has found the widest application in construction, mechanical engineering, and also many other branches. This metal has many different brands, and all of them differ from each other in characteristics. Steel 40x is a structural alloyed grade of this material. And here we will talk more about it.

In addition to the usual impurities, the mark 40x contains a certain number of elements that are specially introduced. Due to this, special properties are provided. Here, as an alloying element, chromium is used. It is because of him that the letter X appears in the marking .

In this steel there is a feature - this is a difficult weldability. In this connection, the 40x steel during the welding process is heated to 300 ^° C, and after it - to heat treatment. In addition to this feature, there is a propensity for a vacation ability, and also a flock-sensitive sensitivity.

Steel 40x characteristics has the following:

- elongation relative - 13-17%;

- impact strength - up to 800 kJ / square. meter;

- ultimate strength - up to 900 MPa.

There are other features that are characteristic of this steel grade :

- the limit of endurance is high enough;

- Possibility to carry out cutting by cutting, by welding or under pressure;

- resistance to warping and decarburization during thermal exposure.

For all such materials, these are the most important properties. It is they that allow the use of 40x steel in the machine building industry.

When forging this steel, the temperature at the beginning of the process is 1250 ° C, and at the end - 800 ° C.

Very often, this steel is used in the manufacture of improved parts, which are distinguished by their high strength. These are products such as plungers, spindles, shafts, shafts, rings, shaft-gears, crankshafts and camshafts, bolts, semi-axles, slats, bushings, spongy corals, mandrels and other necessary parts.

Steel 40 is widely used for the manufacture of taps, drills, files. As you can see, these are all the instruments that we have to work at low speed, and the heating temperature is no more than 2000 degrees. These products are rods that have a circular cross-section. They are made according to GOST 5950-2000.

In case you need steel, which is resistant to corrosion, you need to pay attention to the brand 40x13. This is stainless corrosion-resistant steel. Resistance to corrosion, it acquires after hardening, because in this case, completely dissolves the carbide. Steel 40x13 is produced in induction furnaces, as well as in open arc type. The resulting material is perfectly deformed at a temperature of 850-1100 ^o C. And in order to avoid cracks, heating and subsequent cooling must be done slowly.

Finally it is worth recommending to customers. The best is steel 40x, as well as products from it, buy from manufacturers directly. Here, the cost will always be without extra charges, because you "bypass" intermediaries. Also, the products can be manufactured according to the parameters you ordered. In addition, factories often offer discounts to wholesale buyers, and there is also a guarantee of the quality of the goods. And in the case of marriage, you will know who to turn to.