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BS4449 Steel Reinforcement Rebar

BS4449 is the British Standard specification for carbon steel bars used in the reinforcement of concrete. It covers deformed (ribbed) steel bars and fabric, ensuring material quality and mechanical properties for structural applications in the UK and many Commonwealth countries.

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Steel Rebar

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PRODUCT DETAILS

BS4449 Steel Reinforcement Rebar Description

Under BS4449, reinforcement bars are classified primarily by their yield strength, with the most common grade being B500B (characteristic yield strength of 500 MPa). The standard defines requirements for ductility, bending, and welding performance, providing engineers with reliable materials for reinforced concrete design.

BS4449 rebar is produced by the hot-rolled process and is suitable for a wide range of construction uses—from general civil and building works to infrastructure projects—where verified mechanical properties and compliance with UK structural design standards (such as BS 8110 or Eurocode 2) are required.

Key Product Information:

Grades Available: B500A (low ductility), B500B (standard ductility), B500C (high ductility, for seismic zones)

Diameter Range: Commonly from 6 mm to 50 mm (including 8, 10, 12, 16, 20, 25, 32, 40 mm)

Standard Lengths: Typically supplied in 9 m or 12 m lengths; custom lengths can be produced upon request

Surface: Deformed with transverse ribs and longitudinal markings for enhanced bond with concrete

Certification: Supplied with mill test certificates to verify compliance with BS4449 requirements

BS4449 reinforcement is widely used in foundations, beams, columns, slabs, and other reinforced concrete members where structural integrity, durability, and compliance with British engineering practices are essential.

BS 4449:97 British Rebar Specifications
Rated Diameter	Nominal Cross Section Area	Weight		EN To The Ribs (mm)				Longitudinal Ribs (mm)				Pitch / Step mm		Ribs Tip Distance mm
Rated Diameter	Nominal Cross Section Area	Kg / m	Tolerance %	Height		Width		Height		Width		Pitch / Step mm		Ribs Tip Distance mm
mm	m㎡	Kg / m	Tolerance %	min.	max.	min.	max.	min.	max.	min.	max.	min.	max.	min.	max.
6	28.3	0.222	± 9	0.3	0.6	0.48	0.72	0.3	0.84	0.48	1.2	3,.0	4.8	1.5	2.3
8	50.3	0.395	± 6.5	0.4	0.8	0.64	0.96	0.4	0.84	0.64	1.6	4.0	6.4	2.0	3.1
10	78.5	0.616	± 6.5	0.5	1.0	0.8	1.2	0.5	0.84	0.8	2.0	5.0	8.0	2.5	3.9
12	113.1	0.888	± 4.5	0.6	1.2	0.96	1.44	0.6	0.84	0.96	2.4	6.0	9.6	3.0	4.7
16	201.1	1.579		0.8	1.6	1.28	1.92	0.8	0.84	1.28	3.2	8.0	12.8	4.0	6.2
20	314.2	2.466		1.0	2.0	1.6	2.4	1.0	0.84	1.6	4.0	10.0	16.0	5.0	7.8
25	490.9	3.854		1.25	2.5	2.0	3.0	1.25	0.84	2.0	5.0	12.5	20.0	6.2	9.8
32	804.2	6.313		1.60	3.2	2.56	3.84	1.60	0.84	2.56	6.4	16.0	25.6	8.0	12.5
40	1256.6	9.864		2.0	4.0	3.2	4.8	2.0	0.84	3.2	8.0	20.0	32.0	10.0	15.7
50	1963.5	15.413		2.5	5.0	4.0	6.0	2.5	0.84	4.0	10.0	25.0	40.0	12.5	19.6

BS 4449:97 Steel Rebar Mechanical Properties
Quality	Akma N / mm2<	Akma / Pull Rate N/mm2	Elongation Elasticity	Total max. % AGT
Quality	min.	min.	min.	min.
GR 250	250	Akma x 1.15	22	–
GR 460 A	460	Akma x 1.05	12	2.5
GR 460 B	460	Akma x 1.08	14	5

Scope of Application

Widely used in houses, bridges, roads, especially railways and other civil engineering.

USA	Japan	Germany		U.K.		France	Italy	Spain	Switzerland	China
AISI/SAE	JIS	W‐nr.	DIN	BS	EN	AFNOR	UNI	UNE	SS	GB
A570.36	STKM 12A	1.0038	RSt.37‐2	4360	‐	E 24‐2	‐	‐	1311	15
-	STKM 12C	-	-	40 C	-	Ne	-	-	-	-
1015	‐	1.0401	C15	080M15	‐	CC12	C15, C16	F.111	1350	15
1020	‐	1.0402	C22	050A20	2C	CC20	C20, C21	F.112	1450	20
1213	SUM22	1.0715	9SMn28	230M07	1A	S250	CF9SMn28	F.2111	1912	Y15
1213	SUM22	1.0715	9SMn28	230M07	1A	S250	CF9SMn28	11SMn28	1912	Y15
12L13	SUM22L	1.0718	9SMnPb28	‐	‐	S250Pb	CF9SMnPb28	11SMnPb28	1914	‐
‐	‐	1.0722	10SPb20	‐	‐	10PbF2	CF10Pb20	10SPb20	‐	‐
1215	‐	1.0736	9SMn36	240M07	1B	S300	CF9SMn36	12SMn35	‐	Y13
12L14	‐	1.0737	9SMnPb36	‐	‐	S300PB	CF9SMnPb36	12SMnP35	1926	‐
1015	S15C	1.1141	Ck15	080M15	32C	XC12	C16	C15K	1370	15
1025	S25C	1.1158	Ck25	‐	‐	‐	‐	‐	‐	25
A572-60	‐	1.890	StE380	4360 55	‐	‐	FeE390KG	‐	2145	‐
1035	‐	1.0501	C35	060A35	‐	CC35	C35	F.113	1550	35
1045	‐	1.0503	C45	080M46	‐	CC45	C45	F.114	1650	45
1140	‐	1.0726	35S20	212M36	8M	35MF4	‐	F210G	1957	‐
1039	‐	1.1157	40Mn4	150M36	15	35M5	‐	‐	‐	40Mn
1335	SMn438(H)	1.1167	36Mn5	‐	‐	40M5	‐	36Mn5	2120	35Mn2
1330	SCMn1	1.1170	28Mn6	150M28	14A	20M5	C28Mn	‐	‐	30Mn
1035	S35C	1.1183	Cf35	060A35	‐	XC38TS	C36	‐	1572	35Mn
1045	S45C	1.1191	Ck45	080M46	‐	XC42	C45	C45K	1672	Ck45
1050	S50C	1.1213	Cf53	060A52	‐	XC48TS	C53	‐	1674	50
1055	‐	1.0535	C55	070M55	9	‐	C55	‐	1655	55
1060	‐	1.0601	C60	080A62	43D	CC55	C60	‐	‐	60
1055	S55C	1.1203	Ck55	070M55	‐	XC55	C50	C55K	‐	55
1060	S58C	1.1221	Ck60	080A62	43D	XC60	C60	‐	1678	60Mn
1095	‐	1.1274	Ck101	060A96	‐	XC100	‐	F.5117	1870	‐
W1	SK3	1.1545	C105W1	BW1A	‐	Y105	C36KU	F.5118	1880	‐
W210	SUP4	1.1545	C105W1	BW2	‐	Y120	C120KU	F.515	2900	‐

Packing and delivery

The company has become a trustworthy partner of the international steel industry. After nearly two decades of unremitting efforts, our customer base now covers more than 110 countries and regions in Europe, the Middle East, South America, and Southeast Asia.

Quality Inspection

Our company has passed ISO9001 quality management system certification, Our Mill product with CE/EN10204 / ASTM/Classification society certificate/CASO/BIS etc certificate.All the customers give good appreciation to our products.We are glad to be your good partner. Warmly welcome you to visit our factory!

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FAQ

Q:Does the product have quality inspection before loading?

A: Of course, all our products are strictly quality tested before packing, unqualified products will be destroyed, customers can appoint a third party to inspect the products before loading as well.

Q:Can l go to your factory to visit?

A: Of course, we welcome customers from all over the world to visit our factory

Q:How many countries you already exported to?

A: We have exported to the United States, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana, Somalia and other African countries. We have rich export experience, we are familiar with different market demands and can help customers avoid a lot of trouble.

Q:How long does your delivery time take?

A: Generally speaking, our delivery time is within 7-15 days, if the quantity is very large or special circumstances occur, it may be longer.

Q:lt's my first time to import steel products, can you help me with it?

A: Of course, we have agent to arrange the shipment and we will do it with you.

Q:What product information do l need to provide?

A: Please provide the grade, width, thickness, surface treatment requirements (if you have any) and the quantity you need to purchase.

Steel Rebar

BS 4449:97 Steel Rebar Chemical Properties
Element	GR 250 % max.		GR 460 A / B % max.		Ribs and Marking Method
Element	Casting	Product	Casting	Product
C	0.25	0.27	0.25	0.27
P	0.060	0.065	0.050	0.055
S	0.060	0.065	0.050	0.055
N	0.012	0.013	0.012	0.013
CE	0.42	0.45	0.51	0.54
Mn Cr+Mo+V Ni+Cu
CE = C + ————- + ——————- + —————–
6 5 15

PRODUCT DETAILS

BS4449 Steel Reinforcement Rebar Description

Packing and delivery

Quality Inspection

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