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HRB300 Concrete Uses Carbon Steel Deformed Rebar

The h in HRB300 steel bar is short for hot rolled, (r) is short for ribbed steel bar, (b) is short for steel bar, and 300 after (hbr) indicates the mechanical performance grade of the material, which is widely used in construction, Bridges, railways, airports, DAMS and many other fields. Steel bar refers to the material used for reinforced concrete and prestressed reinforced concrete, and its cross-section is round and square, including round steel bar, ribbed steel bar and twisted steel bar.

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Understanding HRB300 Steel Bars

HRB300 steel bars, commonly used in construction and infrastructure projects, are a type of ribbed steel bar known for their high strength and reliability.

HRB300 steel bars are categorized as follows:

H stands for "hot rolled," indicating the manufacturing process where steel is heated and shaped.

R denotes "ribbed," referring to the ribbed surface that enhances bonding with concrete.

B signifies "steel bar," the general term for reinforcement materials.

300 indicates the minimum yield strength of the material in megapascals (MPa).

HRB300 Concrete Uses Carbon Steel Deformed Rebar

Product Name	Large stock Concrete uses carbon steel deformed rebar
Specifications	Diameter(6-50mm):6mm,8mm,10mm,12mm,16mm,20mm,22mm,25mm,28mm,32mm,40mm,50mm Or OEM
Specifications	Length:6m-12m as your required
Surface	Screw-thread,Epoxy coating,Galvanized coating
Finished	Screw-thread,Epoxy coating,Galvanized coating
Standard	GB:HRB300 HRB400 HRB400E HRB500
	USA:ASTM A615 GR40,GR60
	UK: BS4449 GR460
Inspection	Tensile testing
Methods	(1) Tensile test method: GB/T228.1-2010, JISZ2201, JI SZ2241, ASTMA370, 1497, BS18, etc;
	(2) Bending test method: often use standard test methods have GB/T232-88, YB/T5126-2003, JISZ2248, ASTME290, ROCT14019, etc.
Application	Rebar is widely used in building, bridge, road and other civil engineering construction. From highway, railway, bridge, culvert, tunnel, flood control, dam and other publi c facilities,to the building foundation, beams, columns, walls, plates, screw steel are indispensablestructural materials. With the deepening of China's urbanization, the demand for rebar isstrong for infrastructure construction and the booming development of real estate.

HRB300 Concrete Uses Carbon Steel Deformed Rebar

Item	Grade	Specification	Standard
Chinese Standard Deformed Steel Bar	HRB300	6-10MM	GB1499.2-2007
Anti-shock Deformed Steel Bar	HRB300	6-10MM	GB1499.2-2007
English Standard Deformed Steel Bar	460B 500B	10-50MM	BS4449-1997
English Standard Deformed Steel Bar	460B 500B	6-12MM	BS4449-2005
American Standard Deformed Steel Bar	Gr.40 Gr.60 Gr.75 Gr.80	8-40MM	ASTM A615/615M-2013
Australian Standard Deformed Steel Bar	500N	12-36	ASNZS4672-2001
Malaysia Standard Deformed Steel Bar	B500B	10-40	MS-146-2014
Korea Standard Deformed Steel Bar	SD400 SD500 SD600	10-32	KS D3504-2009

Grade of reinforcement	Analysis item	%Chemical composition (mass fraction) %
Grade 40 Grade 60 Grade 75 Grade 80 Grade 100	Melting analysis	C	Mn	P	S
		-	-	≤0.060	-
	Finished product analysis
		-	-	≤0.075	-

Note: The chemical composition of carbon manganese phosphorus sulfur should be indicated on the quality certificate provided by the manufacturer.

Grade of reinforcement	Yield strength R ksi [MPa]	RTensile strength R ksi [MPa]	Elongation after fracture % LQ-200mm
	Yield strength R ksi [MPa]	RTensile strength R ksi [MPa]	3 #[10]	4#[31]-6#[19]	7# [22]-8#[25]	9#[29]-20#[64]
	≥	≥	≥	≥	≥	≥
Grade 40	40 [280]	60 [420]	11.0	12.0	/	/
Grade 60	60 [420]	90 [620]	9.0	9.0	8.0	7.0
Grade 75	75 [520]	100 [690]	7.0	7.0	7.0	6.0
Grade 80	80 [550]	105 [725]	7.0	7.0	7.0	6.0
Grade 100	100 [690]	115 [790]	7.0	7.0	7.0	6.0