Growth Steel Deformed Bars are all 'hot rolled' and produced using both direct rolling from the continuous casting line (for mild steel deformed bar) and by tempering and reheating to rolling temperatures (high tensile grades). The Growth Steel Deformed Bars Production is on three dedicated rolling lines and are manufactured under strict quality controls to ensure consistancy and conformity to regional and international standards. Growth Steel Deformed Bars are manufactured to, and conform to the major world standards for deformed bar. The standards and grades of Growth Steel steel deformed bars available are:- BS 4449: 2005, Grade B500B Yield Point – 500 N/mm2 Tensile/Yield Str'th ratio – 1.08 Elongation – 5% at max. Agt C: 0.24% max S: 0.055% max P: 0.055% max Cu: 0.85% max N: 0.014% max CE: 0.52% max BS 4449: 1997, Grade 250 Yield Point – 250 N/mm2 Tensile Str'th – Min. 15% > Yield Str'th Elongation – Min. 22% C: 0.24 – 0.28% max S: 0.060 – 0.068% max P: 0.060 – 0.068% max C+Mn/6: 0.42 – 0.45% max BS 4449: 1997, Grade 460 Yield Point – 460 N/mm2 Tensile Str'th – Min. 15% > Yield Str'th Elongation – Min. 12% C: 0.30 – 0.33% max S: 0.050 – 0.05% max P: 0.050 – 0.058% max C+Mn/6: 0.51 – 0.54% max JIS G3112: 2004, Grade SD390 Yield Point – 390 - 510 N/mm2 Tensile Str'th – 560 N/mm2 min. Elongation – Min. 16 - 17% C: 0.29% max Si: 0.55% max Mn: 1.80% max S: 0.040% max P: 0.040% max C+Mn/6: 0.55% max SNI 07-2052: 2002, Grade BjTS 40B Yield Point – 390 N/mm2 Tensile Str'th – Min. 560 N/mm2 Elongation – Min. 16–18% C: 0.29% max Mn: 1.80 max S: 0.050% max P: 0.050% max C+Mn/6: 0.55% max