Cold butt steel wire rod is a product made of steel, which usually has a circular or square cross-section. Cold head refers to the process of rolling steel through multiple rollers, which can make the steel more uniform and precise distribution of material while maintaining high strength. Therefore, cold butt steel wire rods are usually used in applications that require high strength, precision and quality stability, such as construction, machinery manufacturing, automobiles, ships and other industries.
What are the performance characteristics of Baosteel cold pier steel wire rod?
Stable performance, high surface quality, excellent cold heading performance.
What are the product features of Baosteel cold pier steel wire rod?
- Complete varieties: carbon series, boron series, low alloy series, alloy series
- Large span of intensity levels: can supply below 14.9 level (order)
- Strong ability to adapt to the environment: general purpose, heat-resistant use, corrosion-resistant use, etc.
- Excellent processing and manufacturing performance: high quality stability, low cold heading cracking rate
Microstructure of Baosteel Cold Pier Steel Wire Rod
The microstructure of Baosteel cold pier steel wire rod is composed of ferrite + pearlite; ferrite + bainite
The microstructure of cold pier steel wire rod usually has the characteristics of fine grain size, layered structure, directionality, and residual stress.
What is the chemical composition of SCM440 cold pier steel wire rod?
SCM440 is a low-alloy steel commonly used in the manufacture of mechanical components such as high-strength bolts and bearings. Its chemical composition is generally as follows:
Carbon C: 0.38～0.43%
Silicon Si: 0.15～0.35%
Manganese Mn: 0.60～0.85%
Phosphorus P: not more than 0.030%
Sulfur S: not more than 0.030%
Chromium Cr: 0.90～1.20%
Molybdenum Mo: 0.15～0.25%
The chemical composition of SCM440 cold pier steel wire rod meets the requirements of JIS G4053 standard, which ensures the quality stability and performance of the product.
What is the cold heading performance of SCM440 cold pier steel wire rod?
SCM440 low alloy steel has good cold heading properties. Generally speaking, the cold heading performance of cold pier steel wire rod refers to the ductility and plasticity of the material during processing, that is, it can be deformed and maintained at a certain level by cold working methods (such as cold drawing, cold extrusion, cold forging, etc.) Strength of.
SCM440 low-alloy steel has high tensile strength and hardness, and some deformation stress will be generated during cold working, but its physical properties are relatively uniform, so its corrosion resistance and fatigue life are relatively good. Due to its high strength and good stability, it can be cold-worked to a greater extent to meet the needs of products of different specifications and sizes.
How about the mechanical properties of SCM440 cold pier steel wire rod?
SCM440 cold pier steel wire rod has good mechanical properties, and its main mechanical properties are as follows:
Tensile strength: In the tensile test, the tensile strength of SCM440 cold pier steel wire rod is generally 950-1150 MPa.
Yield strength: In the tensile test, the yield strength of SCM440 cold pier steel wire rod is generally 640-900 MPa.
Elongation: The elongation of SCM440 cold pier steel wire rod is generally 10%-20%.
Impact toughness: At low temperature, SCM440 cold pier steel wire rod has better impact toughness and durability.
Hardness: The hardness of SCM440 cold pier steel wire rod is generally HRC22-28.
Generally speaking, SCM440 cold pier steel wire rod has excellent mechanical properties such as high strength, high hardness, high ductility and good impact toughness. Therefore, it is widely used in the manufacture of high-quality mechanical parts, engineering structures and other heavy equipment.
What are the advantages of SCM440 cold pier steel wire rod?
SCM440 cold pier steel wire rod has the following advantages:
High strength: SCM440 cold pier steel wire rod has relatively high tensile strength and yield strength, and can withstand large static and dynamic loads. It is an ideal material for manufacturing high-strength mechanical parts.
High dimensional accuracy: SCM440 cold pier steel wire rod has been rolled for many times and has high dimensional accuracy, which can meet the application occasions with high precision requirements.
Good surface finish: The surface of SCM440 cold pier steel wire rod has been rolled and polished for many times, so the surface finish is high, and it is not easy to have problems such as oxidation and rust.
Good machinability: SCM440 cold pier steel wire rod is excellent in machining, welding and cutting, which is convenient for subsequent manufacturing and processing.
Wide range of applications: SCM440 cold pier steel wire rod can be used in various machinery manufacturing, building materials, automobiles, ships and other industries, and can also be used to manufacture various bolts, nuts, bearings and other parts.
Low cost: Compared with some high-end steel products, the production cost of SCM440 cold pier steel wire rod is relatively low, so the price is also relatively affordable.
What is the specification of SCM440 cold butt steel wire rod?
The specifications of SCM440 cold pier steel wire rod are determined according to the customer’s demand and the production capacity of the manufacturer. The following are some common specifications:
Diameter: 5.5mm-40mm
Length: 3000mm-6000mm
Shape: round or square section
The above are just the common specifications. In fact, the specifications of SCM440 cold pier steel wire rod are very diverse and can be customized according to the specific requirements of users. When selecting the specification of SCM440 cold pier steel wire rod, factors such as product application, strength requirements, load conditions and processing difficulty need to be considered.
What are the main uses of SCM440 cold pier steel wire rod?
SCM440 cold pier steel wire rod is mainly used in the manufacture of high-strength bolts, bearings and other mechanical parts and other applications. Here are some main uses of SCM440 cold butt steel wire rod:
Manufacturing high-strength bolts: SCM440 cold pier steel wire rod is very suitable for manufacturing high-quality bolts, nuts and other connecting parts due to its high tensile strength and yield strength.
Manufacture of high-quality bearings: SCM440 cold pier steel wire rod can be used to manufacture various bearings, transmission gears and other moving parts due to its high hardness, high strength and excellent wear resistance.
Manufacture of mechanical parts: SCM440 cold pier steel wire rod can be used to manufacture various mechanical parts, such as structural parts of excavators, cranes, construction machinery and other equipment.
Manufacture of high-quality tools: SCM440 cold pier steel wire rod can be used to manufacture high-quality knives, molds and other processing tools to meet the needs of high-precision machining and mold manufacturing.
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