Grade Fe 500

Properties | BIS<br>Fe 500 | Bhagwati<br>500 | BIS<br>Fe 500 D | Bhagwati<br>500 D* | :-- | :-: | :-: | :-: | :-: | Yield Strength, N/mm2, min | 500 | 530-570 | 500 | 530-570 | Tensile Strength, N/mm2, min | 545 | 600-660 | 565 | 610-670 | Stress Ratio (UTS/YS), min | 1.08 | 1.14-1.22 | 1.10 | 1.15-1.23 | Elongation, % min | 12 | 18-22 | 16 | 18-23 |

Properties | BIS<br>Fe 500 | Bhagwati<br>550* | BIS<br>Fe 500 D | Bhagwati<br>500 D* | :-- | :-: | :-: | :-: | :-: | Yield Strength, N/mm2, min | 550 | 560-590 | 550 | 570-600 | Tensile Strength, N/mm2, min | 585 | 630-660 | 600 | 630-670 | Stress Ratio (UTS/YS), min | 1.06 | 1.12-1.18 | 1.08 | 1.10-1.18 | Elongation, % min | 10 | 14-18 | 14.5 | 16-20 |

Nominal Size (mm) | Nominal Section Wt. (Kg /M) | Section Weight (Range) Kg/M | :-- | :-: | :-: | 8 | 0.395 | (0.367- 0.423) | 10 | 0.617 | (0.574- 0.660) | 12 | 0.889 | (0.845- 0.933) | 16 | 1.580 | (1.501- 1.659) | 20 | 2.469 | (2.395- 2.543) | 25 | 3.858 | (3.742- 3.974) | 28 | 4.840 | (4.695- 4.985) | 32 | 6.321 | (6.131- 6.511) |

As per IS 1786: 2008. However we maintain Carbon equivalent value to maximum 0.45%. Carbon equivalent is determined by the following formula : Cequiv = C + Mn/6 + (Cr + Mo + V)/ 5 + (Ni + Cu)! 15 Properties | BIS<br>Fe 500 | Bhagwati<br>500 | BIS<br>Fe 500 D | Bhagwati<br>500 D | BIS<br>FE 550 D | Bhagwati<br>550 D | :-- | :-- | :-- | :-- | :-- | :-- | :-- | Carbon (Max) | 0.30 | 0.018-0.27 | 0.25 | 0.25-0.25 | 0.25 | 0.22-0.25 | % Manganese | | 0.40-0.50 | | 0.50-0.80 | | 0.50-0.80 | Sulphur (Max) | 0.055 | 0.035-0.050 | 0.040 | 0.030 | 0.040 | 0.030 | Phosphorus (Max) | 0.055 | 0.035-0.050 | 0.040 | 0.030 | | 0.030 |

Test | BIS<br>Fe 500 | Bhagwati<br>500 | BIS<br>Fe 500 D | Bhagwati<br>500 D | BIS<br>FE 550 D | Bhagwati<br>550 D | Bend | | | | | | | Upto 20 mm | 4D | 3D | 3D | 2D | 4D | 3D | Over 20 mm | 5D | 4D | 4D | 3D | 5D | 4D |

Test | BIS<br>Fe 500 | Bhagwati<br>500 | BIS<br>Fe 500 D | Bhagwati<br>500 D | BIS<br>FE 550 D | Bhagwati<br>550 D | Rebend | | | | | | | Upto 20 mm | 5D | 5D | 4D | 3D | 6D | 5D | Upto 20 mm | 7D | 7D | 6D | 5D | 7D | 6D |

Bhagwati bars are produced with C less than 0.25% and are suitable for all the main welding processes without any special precautions. No pre-heating or post-heating is necessary. No loss of strength at weld – joints.

Ageing resistant due to the manufacturing process and chemical composition.

Approved internationally for dynamically stressed structural sections.

Bhagwati bars, have a proven record resisting loss of strength or high temperatures as experienced during fires.

More corrosion resistant than CTD bars. Cold working involved in CTD bars leads to surface stresses and consequent higher rate of corrosion – and, the protective scale layer falls off during twisting. The Tempcore and Thermex processes basically inhibits rate of scale formation and no cold working is involved.