A572/S355JR Round Steel Bar
Product Description
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.

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 NameA572/S355JR 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

A572CMnPSSi
Grade 420.211.350.030.030.15-0.4
Grade 500.231.350.030.030.15-0.4
Grade 600.261.350.030.030.40
Grade 650.23-0.261.35-1.650.030.030.40

 

Mechanical Properties

A572Yield Strength (Ksi)Tensile Strength (Ksi)Elongation % 8 inches
Grade 42426020
Grade 50506518
Grade 60607516
Grade 65658015

 

Physical Performance

Physical PerformanceMetricImperial
Density7.80 g/cc0.282 lb/in³

 

Scope of Application

ASTM A572 carbon steel low-alloy steel is widely used as bridge panels, support plates, mechanical mounting plates, etc. for construction equipment, transmission towers, racks and other equipment.

 

Equivalent Material

EUGerman StandardJapanese StandardFrench StandardBritish StandardCanadaItalySpainNational StandardInternationalPortugalIndia
ENDIN,WNrJISAFNORBSHGUNIUNEGBISONPIS
S355JRSt52-3SM490AE36-250B350WFe510BAE355BQ345BE355CFE510-BIS961


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