Cold Drawn Steel Bar

Your Professional Cold Drawn Steel Bar Supplier

Our goal is to become your true partner in the field of cold drawn steel bar in China. JBLSTEEL has become a modern comprehensive steel service enterprise which specializes in processing, sales and technical services in the field of stainless steel product. JBLSTEEL is specialized in various kinds of stainless steel pipe, plate, coil, bar, pipe fitting, low alloy high strength steel products, wear resistant steel products, and other OEM&ODM service. Our company is committed to applying advanced manufacturing technology and strict quality control standards to every product. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

S45C Carbon Steel

S45C is a kind of high-quality composed carbon steel made by electric furnace, open hearth or pure

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42CrMo4 Alloy Steel

42CrMo4 steel is defined as a low alloy steel which has 1% Cr-Mo as strengthening alloy

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JIS S20C Carbon Steel

S20C Carbon steel is a low carbon steel that contains 0.18-0.23% carbon content. It is commonly

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65Mn Spring Steel Round Bar

65Mn spring steel round bar is a type of high carbon steel with a carbon content of 0.62-0.70%. It

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S50C Carbon Steel

S50C carbon steel is a medium carbon steel with a carbon content of 0.47-0.53%. It is commonly used

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50CrV4 Spring Steel

50CrV4 is a German standard spring steel, equivalent to Chinese GB 50CrVA. . 50CrV4 spring steel is

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65Mn High Carbon Steel Sheet

65Mn is a high carbon steel commonly used in a variety of applications, including manufacturing

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Why Choose Us

Product application

We can produce steel strips, chain steel, cold-drawn round steel of various specifications and materials. Our products are widely used in machinery, automobiles, electronics, construction and other fields.

Our certificates

JBLSTEEL products are certified by internationally renowned certification agencies such as ISO9001, BV, SGS, etc. The products are widely used in various fields, with a service time of more than 10 years, and support third-party testing.

Our equipment

We have the most advanced production equipment, including advanced machinery such as laser cutting machines, welding machines, bending machines and automatic painting equipment.

Our service

The company has a professional sales team to provide you with high-quality pre-sales consulting services. During the order production process, customers can communicate with us at any time to understand the production progress. At the same time, we provide high-quality after-sales service to meet the different needs of customers.

Advantages of Cold Drawn Steel Bar

Increased strength and accuracy: Cold drawn metal is much stronger than hot rolled metal. This increased strength is due to the work hardening effect that occurs during the drawing process, which refines the grain structure and aligns the grains along the direction of drawing.

Improved surface finish: The cold drawing process results in a smooth, polished surface finish, which is vital for applications where aesthetics and low friction are important.

Better mechanical properties: Cold drawn metal has better mechanical properties, like higher tensile and yield strength. The process can increase the metal’s strength by up to 90%, making it great for tough applications.

Improved corrosion resistance: Cold drawing can also improve the corrosion resistance of some metals. A smoother surface reduces spots where corrosive agents can gather, making the metal more resistant to rust and corrosion.

Material saving and reduced processing time: Cold drawn metal is highly precise, allowing for parts with tight tolerances. This reduces the need for extra machining and cuts down on material waste. As a result, parts can be used right after drawing, saving both materials and processing time.

Cost savings: Although cold drawing equipment requires an initial investment, it leads to substantial cost savings. The precision and surface finish reduce the need for extra machining, lowering production costs. Plus, it uses less energy than hot rolling, making it more cost-effective overall.

Specifications of Cold Drawn Steel Bar

Standards	JIS G4051
Material	Carbon Steel
Forms	Round bar,Plates,Coils,Sheets,etc
S45C Round Bar Size	8-400m,customized
Note	Customized Service,OEM/ODM

Material Properties of Cold Drawn Steel Bar

Tensile strength (kgf/mm²)	≧58
Yield strength (kgf/mm²)	≧35
Elongation (%)	≧20
Cross section reduction rate (%)	≧45
Hardness (Hb)	167~229

Customization Cold Drawn Steel Bar

Cold drawing allows for customized metal products. By changing the dies, manufacturers can create various shapes and sizes, like round, square, hexagonal, and flat profiles. This versatility makes cold drawn metal useful in many industries, from mechanical equipment to electrical components and furniture.

The Cold Drawn Steel Bar Process

Initial preparation: The process begins with selecting suitable raw material, typically hot-rolled steel bar or rod coils. The raw material is thoroughly cleaned to remove abrasive scale and surface contaminants, ensuring a smooth drawing process and preventing damage to the drawing dies.

Drawing through the die: The prepared material is then pulled through a die, a hardened steel tool with a precise opening that shapes and reduces the metal’s size. The drawing action reduces the material’s diameter, increases its length, and shapes its profile.

Intermediate annealing: For complex shapes or significant size reductions, the material May undergo intermediate annealing between drawing passes. Annealing involves heating the metal to a specific temperature and then cooling it.

Final pass and finishing: After the necessary drawing passes and any required annealing, the material goes through a final drawing pass to achieve the exact dimensions and surface finish needed. The cold drawing process results in a product with improved mechanical properties like higher tensile strength and hardness, as well as a smooth, polished surface.

Grain structure, internal stress, and work hardening: Cold drawing significantly affects the metal’s grain structure and internal stress. The deformation aligns the grains along the drawing direction, refining the grain structure and enhancing the material’s strength and hardness.

Implications of work hardening: While work hardening improves the metal’s strength, it also makes it less ductile and more prone to cracking if not managed properly. Balancing high strength and adequate ductility is crucial for the successful application of cold drawn metal in various industries.

Applications of Cold Drawn Steel Bar

Cold drawn steel bar products are widely used in mechanical equipment: Woodworking machinery, ceramic machinery, papermaking machinery, glass machinery, food machinery, construction machinery, plastic machinery, textile machinery, jacks, hydraulic presses, etc.; electrical product components: Motor shafts, fan shafts, sewing machine shafts, etc.; furniture: Especially export metal furniture, such as tea tables, chairs, outdoor furniture; metal utensils: Garden tools, barbecue grids, screwdrivers, anti-theft locks, etc.; screws, round nails, hexagonal nails, octagonal nails and various standard parts of different specifications, etc.; spare parts for automobiles and motorcycles, etc.

Packaging and Shipping of Cold Drawn Steel Bar

Packing	Sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope
Shipping	Shipped by road, sea, rail or air

FAQ

Q: What is a cold drawn bar?

A: Drawing: In this process, the material being drawn is at room temperature (i.e. Cold-Drawn). The pointed/reduced end of the bar or coil, which is smaller than the die opening, is passed through the die where it enters a gripping device of the drawing machine.

Q: What is the difference between hard drawn and cold drawn?

A: High carbon spring steels (cold drawn) are commonly utilized spring materials. Easily worked and inexpensive, Hard Drawn MB material is not meant for low or high temperatures, impact loading or shock.

Q: What is cold drawing in metal?

A: Cold drawing is a process involving the plastic deformation of metals, capable of changing the shape of a material by inserting a smaller piece through a hole or cross-section matrix. The metal drawing process is based on two fundamental principles: metal ductility and traction force.

Q: Are all cold finished bars cold drawn?

A: There are three main types of cold finished (CF) categories. First, are cold drawn (CD) bars, which represent the largest in the way of tonnage. The second type is turned & polished (T&P) bars. The third type is turned, ground & polished (TG&P) bars.

Q: Is cold drawn steel stronger?

A: Since cold drawn steel is shaped after it's been allowed to cool, it has more strength than hot rolled and cold rolled steel. Basically, if you want a metal that will hold its shape and hold up to the pressures that you're going to exert upon it, then you want cold drawn steel.

Q: What is the difference between a steel rod and a steel bar?

A: Round bars are typically made from hot-rolled steel, while rods usually come from cold-drawn steel. Round bars have a higher carbon content than rods, which gives them better strength and hardness properties.

Q: What is the difference between cold drawn and extrusion?

A: Extruding is a faster process than cold drawing. Extrusion produces more accurate dimensions compared to cold drawing. The surface of extruded metals is smoother than that of drawn metal, making it ideal for certain applications like food processing equipment and medical devices.

We're well-known as one of the leading cold drawn steel bar manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale cold drawn steel bar for sale here from our factory. For price consultation, contact us.

50CrV4 Spring Steel, S45C Carbon Steel, 65Mn High Carbon Steel Sheet