A572/S355JR Round Steel Bar

1. Competitive price and quality from our own factory
2. Approved by ISO9001, CE, SGS every year
3. Best service with 24 hour’s reply
4. Flexible payment with T/T, Paypal, etc
5. Smooth production ability (50000tons/month)
6. Quick delivery and standard exporting package
7. OEM/ODM

Product Description A572/S355JR Round Steel Bar

A572 steel bar is made of a low-carbon, low-alloy high-strength steel employing the electric furnace steel making 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	6.35×12.7mm, 6.35×25.4mm, 12.7×25.4mm
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.

Chemical Composition

A572	C	Mn	P	S	Si
Grade 42	0.21	1.35	0.03	0.03	0.15-0.4
Grade 50	0.23	1.35	0.03	0.03	0.15-0.4
Grade 60	0.26	1.35	0.03	0.03	0.40
Grade 65	0.23-0.26	1.35-1.65	0.03	0.03	0.40

Mechanical Properties

A572	Yield Strength (Ksi)	Tensile Strength (Ksi)	Elongation %8 inche
Grade 42	42	60	20
Grade 50	50	65	18
Grade 60	60	75	16
Grade 65	65	80	15

Carbon steel bar size table

Diameter (inches)	Diameter (mm)
1/4	6.35
3/8	9.52
1/2	12.7
5/8	15.88
3/4	19.05
1	25.4
1 1/4	31.75
1 1/2	38.1
2	50.8

Carbon steel round steel is a steel with a carbon content greater than 0.08%, and is one of the most widely used materials in the construction industry. Commonly used materials include
A36/S355JR/1018/1025/4130/EN8 etc.