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A36 Round Steel Bar
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A36 is a low-carbon steel containing manganese, phosphorus, sulfur, silicon and copper. A36 has good weldability and high yield strength. A36 carbon steel bar is commonly used as a variety of structural steel parts.
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PRODUCT PARAMETERS

Carbon Steel: Properties, Production, Examples and Applications


Carbon steel is an iron-carbon alloy, which contains up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements, however, they often contain manganese. The maximum manganese, silicon and copper content should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.


Types of carbon steel and their properties


Carbon steel can be classified into three categories according to its carbon content: low-carbon steel (or mild-carbon steel), medium-carbon steel and high-carbon steel . Their carbon content, microstructure and properties compare as follows:



Carbon content (wt.%)MicrostructurePropertiesExamples
Low-carbon steel< 0.25Ferrite, pearliteLow hardness and cost. High ductility, toughness, machinability and weldability
Medium-carbon steel0.25 – 0.60MartensiteLow hardenability, medium strength, ductility and toughness
High-carbon steel0.60 – 1.25PearliteHigh hardness, strength, low ductility



Carbon Steel Description



Grade:


1)GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C,Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E


2)EN: S185,S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q 


3)ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80 


4)JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE



PRODUCT DETAILS



A36  Round Steel Bar Description
A36 is  a carbon structural steel whose chemical composition and mechanical  properties strictly conform to American ASTM standards. A36 steel bar mainly consists of iron, carbon,  silicon, manganese, phosphorus, sulfur and other elements. Iron constitutes more than 99% of the entire chemical composition. Its carbon content proportion is relatively  high, around 0.2%,  ensuring that the steel has a certain hardness and toughness. The addition of  silicon, manganese and other elements enhances the strength and toughness of  steel. Phosphorus  and sulfur are low so that the steel bar has  good welding performance and corrosion resistance. A36 steel bar is used for  welded, bolted or riveted construction of bridges and buildings, as well as  for general structural purposes. Due to its lowest yield point, A36 can be  used to design lighter-weight structures and equipment, and provide good  weldability.


Product   Parameters
Product NameA36 Round Steel Bar
StandardEN/DIN/JIS/ASTM/BS/ASME/AISI, etc.
Common   Round Bar Specifications3.0-50.8 mm, Over 50.8-300mm
Flat   Steel Common Specifications6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm
Hexagon   Bar Common SpecificationsAF5.8mm-17mm
Square   Bar Common SpecificationsAF2mm-14mm, AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm
Length1-6meters, Size Accept Custom
Diameter(mm)Hot Rolling   Round Bar25-600Cold   Rolling Square Bar6-50.8
Hot Rolling Square Bar21-54Cold   Rolling Hexagon Bar9.5-65
Cold Rolling Round bar6-101.6Forged Rebar200-1000
Surface ProcessBright, Polished, Black
Other   ServicesMachining(cnc), Centerless Grinding(cg), Heat   Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting,   Bending, Small Machining, etc.


Chemical Composition
CCuFeMnPSiS
0.25~0.2900.2981.030.040.280.05
Physical  Performance
Physical PerformanceMetricImperial
Density7.85 g/cm30.284 lb/in3
Scope of  Application
Bolted,  riveted or welded structures for bridges, buildings and oil drilling rigs.
Used  for forming storage tanks, silos, bearing plates, fixtures, rings, templates,  fixtures, sprockets, cams, gears, bottom plates, forgings, decoration  engineering, piles, brackets, automobiles and agricultural equipment, frames,  mechanical parts, etc.
Equivalent Material
National  Standard GBEuropean  Standard ENAmerican  Standard ASTMGerman Standard DIN,WNrJapanese  Standard JISFrench Standard AFNORBritish  Standard BSCanada HG
Q235BS235JRA283CSt37-2SM400AE24-240A/40B230G
Italy UNIIndia ISSwitzerland SSAustralia ONORMNorway NSSpain UNEInternational Standards ISOPortugal NP
Fe360BIS20621311/1312RSt360BNS12123AE235B-FNE235B/Fe360BFE360-B



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PRODUCT DISPLAY

We adopt high standard production processes, select high-quality steel raw materials, and provide diverse product specifications and models. All steel products have passed strict quality testing, with smooth and even surfaces, precise dimensions, excellent compressive strength, corrosion resistance, and processability. Support customized thickness, length, and special process requirements to meet different usage standards in different scenarios. Clear display of high-definition detailed images and technical parameter tables of the physical object, ensuring transparent and visible quality.

PRODUCT APPLICATION

This product is widely used in the fields of building structures, mechanical manufacturing, automotive parts, energy equipment, and home hardware, and is suitable for scenarios such as load-bearing frames, precision parts, and industrial pipelines. With excellent physical performance and stability, it can easily meet the demands of high strength, high wear resistance, and extreme environments. Support collaboration with engineering teams to provide material selection suggestions and assist clients in efficiently implementing their projects.


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PRODUCT PACKAGING

Adopting a professional industrial packaging solution that is moisture-proof and scratch resistant, each batch of steel is tied and fixed with customized wooden frames/steel strips, combined with anti rust coatings and cushioning pads to ensure zero damage during transportation. Clear product model, batch number, and storage identification on the outer packaging, supporting customized enterprise logos and information labels. Environmentally friendly and recyclable packaging materials practice green concepts, reducing transportation and disassembly costs.

FACTORY DISPLAY

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FAQ

Q1: Do you pack the products?

A: Yes, in general, we will strictly pack the fragile products, such as stainless steel, aluminum, etc. to prevent the products from being scratched. We can also pack the goods according to the customer's requirements.

Q2: Can you provide samples?

A: Yes, we can provide free samples, but customers need to bear the transportation costs.

Q3: How do you guarantee the quality of your products?

A: Our factories are professionally certified, and each product is inspected piece by piece according to domestic and international QA/QC standards. We can also show the product quality certificate to customers.

Q4: Do you make customized products?

A: Yes, we have many years of experience in product customization and can tailor products for you according to your specific requirements.

Q5: Do you accept third-party inspection?

A: We accept third-party inspection: SGS, V-trust, TUV, DNV and other third-party inspections.

Q6: What are your payment terms?

A: We accept 30% T/T advance payment and 70% balance before delivery. We will show you the photos of the products and packages before you pay the balance.

Q7: What are your delivery methods?

A: EXW, FOB, CIF, CFR, DDU, etc.

Q8: What is your delivery time?

A: For stock products, we can deliver the goods to the loading port within 3-7 days after receiving your advance payment. For production cycle, it usually takes about 15 to 30 days after receiving the deposit.

Q9: Do you have discounts for large orders?

A: Our company has the ability to supply large projects and also has very good preferential policies for large orders.

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