A36 Round Steel Bar

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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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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◉ FAQ

Q : Are you a manufacturer or just a trader?
A : We are a manufacturer. We can provide high quality products at competitive prices. Our company also has a trade department. Our company specialized in steel products more than 10 years, so we have established cooperative relationship with many steel enterprises. We can provide many types and specifications of steel products.
Q : Could you supply samples?
A : Sure, samples can be provided free of charge, and buyers pay the freight of the sample.
Q : How long does it take you to prepare the goods?
A : It takes seven to ten days for products under 25 tons, and within 15 days for products of 25-100 tons. Special specifications and large quantity of products will be discussed separately.
Q : What is your delivery time?
A : The time of delivery is usually around 15-20 days. We can send out in 2 days, if it has stock.
Q : What is your payment terms?
A : Our usual payment term is 30% deposit, and rest before delivery. L/C is also acceptable. EXW, FOB, CFR, CIF.

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