Q195 Round Steel

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Q195 Round Steel

Q195 round steel is a Chinese plain carbon structural steel with yield strength 195 MPa and tensile strength 315-430 MPa, material density 7.85 g/cm3. The steel has good plasticity and toughness, and can be used to manufacture low carbon steel wires, thin plates, anchor bolts, ploughshares, chimneys, roofing panels, rivets and tie rods.


The “Q” in Q235 refers to the yield strength of the steel, which is measured in megapascals (MPa). This number indicates the amount of stress or load a particular piece of metal can withstand before it starts to deform permanently. This measurement is important because it helps determine the suitability of a particular grade of steel for various applications.

This particular grade of carbon structural steel possesses moderate mechanical properties that make it ideal for various general purposes. It has good formability and weldability, as well as excellent cold-forming capabilities. However, it might not be as suitable for applications requiring higher tensile strength than other grades of steel.

As such, it is commonly used for manufacturing parts that require support during stress alternation, such as connecting rods, bolts and wheel gears. It is also often used to manufacture structural parts that are exposed to high temperatures, as it has good resistance to corrosion and heat transfer.

Another common use of this type of round steel is in the production of wire rods and steel plates. The wire rods can then be cold drawn into low carbon steel wires, which Mild steel smooth rod are then used to produce black or galvanized iron wire, tie wire and welded wire mesh. The steel plates can be made into roofing panels, decorative panels, packaging containers and iron drums, as well as for switch boxes, instrument cases and protective covers.


Q195 steel has comprehensive mechanical properties including strength, plasticity, toughness and weldability, which makes it a highly versatile carbon structural steel. This versatility allows it to meet various general application requirements, resulting in a wide range of applications across several industries. It is commonly used to manufacture anchor bolts, ploughshares, chimneys, roof panels, rivets, low-carbon steel wires, thin plates, welded pipes, tie rods, hooks, brackets and welded structures.

The cold and hot rolled steel sheets made of Q195 material are often used in manufacturing roofing panels, decorative panels, packaging containers, iron drums, instrument cases, switch boxes, protective covers, and train vehicles, etc. The welded wire mesh and wire fence made of this kind of steel are also very common. Furthermore, the cold and galvanized steel bars are utilized in making steel line bar, aroused line, confining lines, welded work and essence hedges.

While the tensile strength and elongation of Q195 steel is comparable to that of 235 steel, it has better formability and weldability due to its lower carbon content. This makes it ideal for construction applications where these attributes are desired over sheer strength. In addition, both grades are prone to rust and corrosion, but they can be effectively protected with the proper coatings or maintenance procedures. This will help ensure their durability and optimum performance over time.

Mechanical Properties

Q195 is a Chinese plain carbon structural steel grade with yield strength of 195 MPa and tensile strength of 315-430 MPa. Its moderately high ductility and weldability, combined with its good cold-forming properties, make it a versatile material that can be used in a wide range of applications that do not require extremely high strength properties.

Q235, on the other hand, has a higher tensile strength and slightly lower elongation than Q195 and offers better formability and weldability. The distinctions between the two grades serve to provide more balance in mechanical properties to suit different requirements and environmental conditions.

In addition to these mechanical properties, Q195 has high plasticity and toughness. Therefore, it can be made into a variety of products such as steel wire rods, galvanized iron wire, binding wire, welded wire mesh and metal fence, and steel plates.

The surface of Q195 Cathode flat steel must be free from cracks, folds, scabs and inclusions. It should also have pressed iron oxide skin and a clear appearance. Hot rolled rebar for construction Moreover, the thickness and allowable deviation of the flat steel must comply with the provisions of Table 2. Besides, the inspection items and testing methods for flat steel must be in accordance with GB/T 17505 regulations.


Q195 steel is a common carbon structural steel with good mechanical properties and moderate strength. With a relatively low carbon content, it offers fair ductility, weldability, and formability. It is suitable for cold-forming and welding applications in manufacturing, construction, and general industrial purposes. However, it may lack the strength required for more demanding structural applications compared to higher-grade steels.

Generally, this grade of steel is used to manufacture anchor bolts, ploughshares, chimneys, roof panels, rivets, low-carbon steel wires, thin plates, welded pipes, tie rods, hooks, brackets and welded structures. Cold and hot rolled, galvanized, and tinned thin steel plates made from this material are also widely used in roofing panels, decorative panels, packaging containers, iron drums, instrument cases, switch boxes, protection covers, train cars, etc.

Cathode flat steel is delivered according to actual weight or theoretical weight after negotiations between the supplier and the buyer. The chemical composition of the flat steel is in accordance with the provisions of GB/T 700. The thickness of the flat steel is in accordance with dimensional standards and its allowable deviation should not exceed 0.15mm. The flat steel should be oiled or waxed to protect it from corrosion. In addition, it can be galvanized, tinned or plastic composite, or painted. The coating layer should be thick and hard. The rust resistance of the coating depends on the thickness and type of the paint.

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