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A572 Round Steel Bar

A572 steel bars have good strength, ductility and workability, making them ideal for structural applications. These characteristics make the A572 relatively simple to shape into different structures, while maintaining the ability to withstand large stresses and loads.

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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.%)	Microstructure	Properties	Examples
Low-carbon steel	< 0.25	Ferrite, pearlite	Low hardness and cost. High ductility, toughness, machinability and weldability
Medium-carbon steel	0.25 – 0.60	Martensite	Low hardenability, medium strength, ductility and toughness
High-carbon steel	0.60 – 1.25	Pearlite	High 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

A572 Round Steel Bar Description

A572 steel bar is made of a low-carbon, low-alloy high-strength steel employing the electric furnace steelmaking technology. So the main component is scrap iron. Resulting from its reasonable composition design and strict process control, A572 steel bar is widely favored for high purity and excellent performance. Its molten steel pouring manufacturing method not only gives the steel coil good density and uniformity, but also ensures that the steel bar has superior mechanical properties after cooling. A572 carbon steel bar is widely used in construction, bridges, heavy machinery and other fields. At the same time, it shows outstanding performance in welding, forming and corrosion resistance with its low carbon and low alloy characteristics.

Product Parameters
Product Name	A572/S355JR Round Steel Bar
Standard	EN/DIN/JIS/ASTM/BS/ASME/AISI, etc.
Common Round Bar Specifications	3.0-50.8 mm, Over 50.8-300mm
Flat Steel Common Specifications	6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm
Hexagon Bar Common Specifications	AF5.8mm-17mm
Square Bar Common Specifications	AF2mm-14mm, AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm
Length	1-6meters, Size Accept Custom
Diameter(mm)	Hot Rolling Round Bar	25-600	Cold Rolling Square Bar	6-50.8
	Hot Rolling Square Bar	21-54	Cold Rolling Hexagon Bar	9.5-65
	Cold Rolling Round bar	6-101.6	Forged Rebar	200-1000
Surface Process	Bright, Polished, Black
Other Services	Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

A572	C	Mn	P	S	Si
Grade42	0.21	1.35	0.03	0.03	0.15~0.4
Grade50	0.23	1.35	0.03	0.03	0.15~0.4
Grade60	0.26	1.35	0.03	0.03	0.4
Grade65	0.23~0.26	1.35~1.65	0.03	0.03	0.4

A572	Yield Strength(Ksi)	Tensile Strength(Ksi)	Elongation % 8inches
Grade42	42	60	20
Grade50	50	65	18
Grade60	60	75	16
Grade65	65	80	15

Physical Performance	Metric	Imperial
Density	7.80g/cc	0.282 lb/in³

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FAQ

Q1. What steel products do you manufacture and supply?
A: We provide a range of steel products for construction, infrastructure, industrial and engineering applications, including rebar, H-beams, angle steel, channel steel and other structural steel products.

Q2. Can you provide different sizes and specifications?

A:Yes. We can supply products according to standard specifications as well as customer-specific size and dimensional requirements, subject to production feasibility.

Q3. Can you provide product specifications before placing an order?

A:Yes. Product specifications, dimensions, material grades and other technical information can be provided for review before order confirmation.

Q4. Do you support customized steel products?

A:We support flexible steel processing and customized requirements based on product type, dimensions, cutting requirements and project specifications.

Q5. Are you a steel manufacturer or trading company?

A:We have dedicated steel manufacturing and processing facilities and provide factory-direct supply for customers. Our production capabilities allow us to maintain greater control over manufacturing, processing and quality inspection.

Q6. What processing services do you provide?

A:Depending on the product and project requirements, our processing capabilities may include cutting, sizing, forming and other customized processing services.

Q7. Can you manufacture according to customer drawings?

A:We can review customer drawings, specifications and technical requirements to determine suitable production and processing solutions.

Q8. What is your production capacity?

A:Production capacity depends on product type, specifications and order quantity. Please contact our team with your requirements so we can provide a suitable production schedule.

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