What are the factors that affect the price of steel plate such as ordinary plate Q235B ?

Summary. They are all carbon structural steels, they have different carbon content and different strengths, Q235 is low carbon steel, Q335 is medium carbon steel. Q235 is a low-carbon steel with more industrial products, with a yield strength of 235MPa, and there are plates, tubes, angles, grooves, small round bars and so on on the market, with good processing performance, welding performance and rolling performance.

Q335 is medium carbon steel, with a yield strength of 335MPa, which has many round bars and small plate sales in the market.

What is the difference between Q235 steel plate and Q335 steel plate.

They are all carbon structural steels, they have different carbon content and different strengths, Q235 is low carbon steel, Q335 is medium carbon steel. Q235 is a low-carbon steel with more industrial products, with a yield strength of 235MPa, and there are plates, tubes, angles, grooves, small round bars and so on on the market, with good processing performance, welding performance and rolling performance. Q335 is medium carbon steel, with a yield strength of 335MPa, which has many round bars and small plate sales in the market.

Q335 should be Q235, 1, the main difference between Q235 and Q345 is the difference in strength: the lower limit of yield strength of Q235 is 235MPa, and the lower limit of yield strength of Q345 is 345MPa (the meaning of Q is of Chinese characters"Qu"word, the following value represents the lower limit of yield strength) 2, the alloy content of the two is different: Q235 is ordinary carbon steel, Q345 is low alloy steel.

Summary. Pro, the theoretical weight of Q235 steel plate: the theoretical weight of Q235 steel plate = (nominal thickness * nominal width * nominal length) * density of the steel plate with reasonable weight added value will be replaced with "nominal thickness" with "reasonable weight additional thickness".

The theoretical weight of the Q235 steel plate.

Pro, the theoretical weight of Q235 steel plate: the theoretical weight of Q235 steel plate = (nominal thickness * nominal width * nominal length) * density of the steel plate with reasonable weight added value will be replaced with "nominal thickness" with "reasonable weight additional thickness".

The weight of the steel plate is calculated as follows: weight = length (unit m) * width (unit m) * thickness (unit mm) *.

Steel plate is a flat steel made by pouring molten steel, cooling it and pressing it. The steel plate is flat, rectangular and can be rolled directly or sheared from a wide strip of steel. Steel plates are divided according to thickness, thin steel plates < 4 mm (the thinnest mm), thick steel plates 4 60 mm, and extra-thick steel plates 60 115 mm.

Steel plate is divided into hot rolled and cold rolled according to rolling. The width of the sheet is 500 1500 mm; The width of the thickness is 600 3000 mm. Thin plates are divided into ordinary steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron sheet. According to professional use, there are plates for oil drums, enamel plates, bulletproof plates, etc.; According to the surface coating, there are galvanized sheets, tinned sheets, lead-plated sheets, plastic composite steel plates, etc.

Q235B steel plate is a kind of mild steel. In line with the national standard GB T700-2006 "Carbon Structural Steel". Q235B is one of the most common steels in China, which is inexpensive and can be qualified for most products with low performance requirements.

Q235B has certain elongation, strength, good toughness and castability, easy to stamping and welding, and is widely used in the manufacture of general mechanical parts. It is mainly used for welded structural parts with high quality requirements in construction and bridge engineering.

Meaning of Q235B steel plate:

It is composed of Q + number + quality grade symbol + deoxidation method symbol. Its steel number is crowned with "Q", which represents the yield point of the steel, and the following number indicates the yield point value, and the unit is MPa, for example, Q235 represents the yield point (S) of carbon structural steel with 235MPa.

If necessary, the steel number can be followed by a symbol indicating the quality grade and the method of deoxidation. The quality grade symbols are A, B, C, D. Deoxidation Method Symbol:

f denotes boiling steel; b denotes semi-sedative steel; z represents sedative steel; tz stands for special sedative steel, and sedative steel can not be marked with symbols, that is, z and tz can not be marked. For example, Q235-AF represents Grade A boiling steel.

Carbon steel for special purposes, such as bridge steel and marine steel, basically adopts the representation method of carbon structural steel, but the letter indicating the purpose is attached to the steel number.

In addition, the difference between Q235A and Q235B: the steel is carbon steel. In the national standard GB700-88, the material distinction between Q235A and Q235B is mainly in the carbon content of steel, and the material is Q235A, and the carbon content of the material is between; Q235A plate does not do impact test, while Q235B does room temperature impact test, V-notched.

Comparatively speaking, the mechanical properties of steel made of Q235B are far better than those of steel made of Q235A.

In general, steel mills have made identification plates on the finished profiles before they leave the factory. The user can distinguish whether the material is Q235A, Q235B, or other materials on the signage. design pressure p ; The operating temperature is 0 350 °C; Steel plate thickness》=20mm.

Summary. A dear, hello, glad to answer for you, the difference between No. 10 steel and Q235B? 10 The difference between steel plate and Q235B steel plate is better than No. 10 steel.

Q235 steel carbon content, low hardness, low strength, but carbon content, hardness, strength are greater than No. 10 steel, mechanical properties, chemical composition, is a low-cost carbon steel, the market is more used. The carbon content of No. 10 steel is lower, the chemical composition is maintained, and the mechanical properties are not guaranteed, because the smelting cost is lower than that of Q235, and the market price is also low.

What is the difference between No. 10 steel and Q235B? 10 The difference between the steel plate and the Q235B steel plate is **.

A dear, you have a good beard, I am happy to answer for you, the difference between No. 10 steel and Q235B? 10 The difference between steel plate and Q235B steel plate is better than No. 10 steel. Q235 steel carbon content pants draft permeability, low hardness, low strength, but carbon content, hardness, strength are greater than No. 10 steel, mechanical properties, chemical composition, is a low-cost carbon steel, the market is more used.

The carbon content of No. 10 steel is lower, the chemical composition is maintained, and the mechanical properties are not guaranteed, because the smelting cost is lower than that of Q235, and the market price is also low.

Q235 steel plate is a low-carbon steel plate, the carbon content is higher than that of No. 10 steel, low hardness, low strength, but higher than No. 10 steel, it is a steel grade named after the yield strength value, and it is a low-cost selection of more hand-made carbon steel, which not only ensures the chemical composition, but also ensures the mechanical properties of the cherry tree. No. 10 steel is also low-carbon steel, with a carbon content of to ensure chemical composition, no mechanical properties on the warranty, and the steel mill does not do mechanical property tests before leaving the factory.

Q235 is carbon structural steel, Q345 is low-alloy high-strength steel;

Chemical composition no.

The same, especially Q345 is high in manganese;

The mechanical properties are not the same, the tensile strength of Q235 is 375-500MPa; Q345 tensile strength of 470-630MPa;

You can check the metal material manual and compare it.

The difference between chemical elements: the mn content of 235 is not required, and it is used as a conventional content for deoxidation in steel. 345 has requirements for MN in between.

The difference in mechanical properties: mainly the yield strength, Q235 is more than 235MPa (thickness less than 16mm). The yield strength of Q345 is more than 345MPa (also less than 16mm, and the strength decreases slightly when it is higher than 16mm).

The main thing is that the yield strength is not the same.

Their tensile strength is not the same.

The difference between steel plate 20G and Q235B: the performance requirements are different, and they generally cannot be replaced by each other. Q235-B Chemical Composition: Composition: Yuanfan Earlyin Ratio (%)Carbon; Manganese mn:

Phosphorus: ; Sulfur s: ; Silicon SI:

Characteristics and applications: metal structural parts, carburizing or cyanide car parts with low core strength requirements, tie rods, connecting rods, hooks, couplers, bolts, nuts, sleeves, shafts and welded parts. Deoxygenation Method:

f、b、z；Impact test: AKV (longitudinal) = 27J20G at temperature 20 is a special steel for boilers, containing some trace elements, which is more suitable for use as a boiler pressure vessel. In addition, 20g also focuses on its physical properties.

Such as bending, impact and tensile properties.