Bs 4449 Grade 500b

[Catrin Muzquiz]

B500Bis in the British standard BS 4449-2005 .The grade B500B covers steel delivered in the form of bars,coils products.The standard BS 4449-2005 contains provisions for three steel grades ,all of 500MPa characteristics yield strength ,but with different ductility characteristics.The three grades are B500A,B500B,B500C .

BS 4449-2005 B500B Weldable reinforcing steel for the reinforcement of concrete application :

This British grade B500B specifies requirements for ribbed weldable reinforcing steel used for the reinforcement of concrete structures.

This standard defines three grades of reinforcement conforming to the now withdrawn BS EN 10080: B500A, B500B and B500C. The characteristic yield strength is set at 500 MPa and the tensile properties and ductility of the three grades are described in Table 1.

The 2020 revision of this code involved restructuring and general updating of the 2005 edition. The 2005 edition was produced in order to conform to the anticipated implementation of EN 10080, and incorporated:

Weldable steel for the reinforcement of concrete has become subject to the European Standard, BS EN 10080. In 2008 it had to be withdrawn as a harmonized standard because some countries legal requirements for additional properties of reinforcement were not met. However, it was implemented in the UK in late 2005 and its subsequent withdrawal has no effect on BS 4449 etc.

It contains an informative Annex ZA, which describes how the standard may be used for the purposes of CE marking. Please note that the CE mark is not a quality mark. It merely identifies the product as conforming to the essential requirement laid down by the European Commission in their 'mandate' to CEN. CE marking is not a requirement of BS 4449:2005 and reinforcement cannot be CE marked as the harmonized standard has been withdrawn.

This standard incorporates plain, indented and ribbed wire, coiled or decoiled. Grade 250 has been incorporated. The characteristic strength of the high yield steel has been set at 500 MPa and the ductility aligned with B500A in BS 4449:2005, but no fatigue performance is specified.

Apart from wrapping fabrics D49 and D98, fabric will be made from and evaluated as BS 4449:2005 material. A requirement for the strength of welded joints in BS EN 1992-1-1 has necessitated the withdrawal of A98 and B196 and has increased the diameter of transverse bars in some other designated fabric types.

This British Standard specifies requirements for preferred sizes of smooth or ribbed alloy steel bars in straight lengths supplied in the hot rolled or hot rolled and processed conditions. It can be used while prEN 10138 standards are in preparation.

The Concrete Centre provides material, design and construction guidance. Our aim is to enable all those involved in the design, use and performance of concrete and masonry to realise the potential of these materials.

A total of more than 500,000 tons of steel grades B500B and 500B have been exported by Hoa Phat Dung Quat since the beginning of the year. This accounts for 45% of Hoa Phat Steel's export volume in the past 11 months. This high-quality steel grade has been certified by UKCares to British standards BS4449 and CS2:2012.

Soon after obtaining the UKCares certification, steel bar grades B500B and 500B attracted the interest of many partners. Some months, export orders reached nearly 100,000 tons. The 500B grade with the CS2 standard provided for the Hong Kong market, and the B500B grade with the SS560 standard is exported to the Singapore market.

Therefore, UK Cares can be considered a "passport" for Hoa Phat steel to enter the UK and other fastidious markets. Besides, Hoa Phat construction steel has been certified in accordance with many rigorous standards of the world such as JIS (Japan), ASTM (USA), and BS (UK), ...

In the past 11 months, Hoa Phat Group has exported 1.1 million tons of construction steel (including high-quality steel bars and wire rod) to many different countries and territories such as Japan, Korea, Malaysia, Singapore, Hong Kong, USA, Canada, etc. A total of 45% of the export volume was accounted for UK Cares standard steel.

Capital Reinforcing are able to provide a Cut and Bent Steel Reinforcing Bar supply to BS8666: 2005 and UK Cares Approved using materials to BS4449: 2005 in various grades which is also UK Cares Approved with diameters from 08mm to 50mm.

Highly Yield deformed Steel Bars for concrete reinforcement in size 08-40 mm and 12 meter long with superior mechanical properties to specification. BS 4449 (97) Grade 460 B Grade 500b, & ASTM A615 GR 60. All products certified by UK CARES and UAE based Dubai Central Laboratories (DCL).

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