Customized Width Carbon Steel Bar with Excellent Weldability and Customization

Place of Origin jiangsu
Brand Name Galvanized Steel
Model Number Q195, Q215,Q235,Q345,ST37, A36,45# ,16Mn, SPHC,SGCC,CGCC

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Product Details
Commodity Carbon Steel Bar Quality High Quality Inspection
Weldability Excellent Hs Code 7213100000
Payment Term 30%T/T Advance + 70% Balance Size 1/4 Inch To 24 Inch
Customization Available Width Customized
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Product Description

Product Description:

Carbon Steel Bar

Carbon steel bar is a widely used type of steel that is known for its high strength, durability, and versatility. It is made up of primarily carbon and iron, with other elements such as manganese, silicon, and sulfur added to enhance its properties. The carbon content of carbon steel bar can range from 0.05% to 2.0%, depending on the type of carbon steel used.

Product Attributes:
  • Length: Random or Customized
  • Hs Code: 7213100000
  • Weldability: Excellent
  • Diameter: 4mm~800mm
  • Surface: Normal Black Surface

Carbon steel bar is available in various shapes and sizes, such as rectangular, round, square, and hexagonal. However, in this product overview, we will be focusing on the most commonly used shapes - rectangular and round.

Rectangular Carbon Steel Bar

Rectangular carbon steel bar, also known as low carbon steel bar, is a type of carbon steel that has a low carbon content. It is often used in structural applications due to its high strength and good ductility. The low carbon content also makes it easier to weld and form into different shapes. This type of carbon steel bar is commonly used in construction, engineering, and automotive industries.

Round Carbon Steel Bar

Round carbon steel bar, also known as mild carbon steel bar, is a type of carbon steel that has a higher carbon content compared to rectangular carbon steel bar. This makes it stronger and more durable, making it suitable for heavy-duty applications such as manufacturing machinery, agricultural equipment, and oil rigs. Its excellent weldability also makes it a popular choice for welding and fabrication projects.

High Carbon Steel Bar

In addition to low carbon and mild carbon steel bar, there is also high carbon steel bar. This type of carbon steel has the highest carbon content, ranging from 0.6% to 0.99%. It is the strongest and hardest type of carbon steel, making it ideal for applications that require a high level of strength, such as making cutting tools, knives, and blades.

Overall, carbon steel bar is a versatile and widely used product that offers excellent strength, durability, and weldability. Its various forms and sizes make it suitable for a wide range of applications in different industries. With its excellent properties and affordable cost, carbon steel bar is a popular choice for many manufacturers and builders.

AISI 4140
High-Tensile Alloy Steel Round bar 4140 Hot Rolled Steel
Grade: AISI 4140, 4130, 5140, 5120
Alloy structural steel: 4140
Executive standard: ASTM A29/A29M-04 4140 steel. This steel has good workability, small processing deformation, and good fatigue resistance. It is a medium hardenable steel. After heat treatment, 4140 has good strength and good comprehensive mechanical properties, good manufacturability, and yield high.

The highest service temperature is 427 degrees Celsius, 4140 strength, hardenability, good toughness, small deformation during quenching, high creep strength and enduring strength at high temperature.

It is used to manufacture forgings that require higher strength and larger quenched and tempered section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips that are heavily loaded, and can also be used Drill pipe joints and fishing tools for oil deep wells below 2000m, and can be used for molds of bending machines.
Product name steel round bar
Size O.D 8-480mm
Length 1-12m
Grade AISI 4140, 4130, 5140, 5120
Inspection X-ray inspection, manual ultrasopic inspection,surface inspection,hydraulic testing
Technique Hot Rolled
Section Shape Round
Main Market Southeast Asia, Middle East, Australia,USA,South America,Africa
Productivity 5000 Tons/month
Packing Standard bundle package Beveled end or as per request
Surface Treatment Black Painted or Customized all available
Date of Delivery According to The Specifications And the Quantities Of Each Contract,

Time Start To Begin When We confirm the Date of the Earnest or L/C
Method of Payment T/T L/C
Method Of Delivery Terms According To the <INCOTERMS 2000> for International Trading
Remarks 1.Payment Terms T/T, L/C
2.Trade Term:FOB/CFR/CIF
3.Minimum Quantity of Order: 2 Tons
4.Delivery Time:7-15 days after receipt of deposite


Product Parameters

AISI 4130 Chemical composition (%)

Item C Si Mn P Mo Cu Cr Ni S
4130 0.28-0.33 0.15-0.35 0.40-0.60 ≤0.035 0.15-0.25 ≤0.030 0.80-1.10 ≤0.030 ≤0.040

AISI 4130 Mechanical properties
Tensile Strength Elongation Yield Strength Hardness after Hardened(HB) 180°old Bending Test
≥930MPa ≥12% ≥785 MPa ≤229 Qualified

AISI 4140 Chemical Composition
  C Si Mn P S Cr Ni Mo Cu
4140 0.38-0.43 0.15-0.35 0.75-1.00 ≤0.035 ≤0.040 0.80-1.10   0.15-0.25  

Delivery Condition:Q+T
Mechanical properties Tensile Strength σb≥1080 MPA Yield Strength σs≥930 MPA

Packaging & Shipping

Hot Rolled AISI 4140 4130 Low Carbon Alloy Steel Solid Round Rod Steel Bars with Competitive Price
Hot Rolled AISI 4140 4130 Low Carbon Alloy Steel Solid Round Rod Steel Bars with Competitive Price

Our Advantages

1. More than 10 years Professional steel export service. Have own production line.
2. Advanced CNC machine.
3. Low cost&Quick Delivery&High quality.
4. Integrity, strength and quality of products recognized by the industry.
5. Most of our clients are international, the domestic well-known enterprises.
6. Has a complete scientific quality management system.
7. Can meet any requirements for all kinds of sheet metal processing with advanced equipment.
Hot Rolled AISI 4140 4130 Low Carbon Alloy Steel Solid Round Rod Steel Bars with Competitive Price

After Sales Service

Pre-sale Service
1.Good quality + Factory price + Quick response + Reliable service
2.100% responsible for the quality:all the products are produced by our professional workman and we have a high-work-effect foreigh trade team.
3.We have enough stock and can deliver in short time.
4.Customized designs,colors,sizes and logos are welcome,responsiveness to customers' requirements.

After-sale Service:
1.We will count cheapest shipping cost and make invoice to you at once.
2.On time delivery.
3.Provide real pictures of loading container,email you the tracking NO. and help to chase the products until the goods arrive you.
4.24 hours online service,if any question,please contact us at anytime in your convenience.
Hot Rolled AISI 4140 4130 Low Carbon Alloy Steel Solid Round Rod Steel Bars with Competitive Price


Q1: How can I get a sample to check your metal work quality?
Answer: After price confirmation, you can require for samples to check our quality. We will provide you sample for free (value under USD35), as long as you afford the express freight.

Q2: How long can I expect to get the metal work sample?
Answer: After you pay the sample charges(if there is) and send us confirmed drawings, the sample will be ready for delivery in 5-7 working days. The samples will be sent to you via DHL, FedEx,UPS,TNT or EMS. It should arrive in 3-5 workdays. You can use your own express account or prepay us if you don't have any account.

Q3: What about the leading time for metal work mass production?
Answer: Honestly, it depends on the order quantity. Normally, 15 workdays to 30 workdays after your deposit if no the samples are confirmed.

Q4: What will we do if the metal work quality is not ok ?
Answer: If the quality problem is caused by our mistake, we will make replacement order for free or pay the back product charge and handling charge back to you.