TMT / HSD BARS

RE-BARS PROFILE Kamdhenu Ispat Limited has quality and technology as prime growth parameters. Along with high-end Franchisee production units Kamdhenu produces HSD Bars such as TMT and CTD. Kamdhenu Ispat Ltd., Bhiwadi unit has state-of-the-art Tempcore Technology from CRM, Belgium to produce high quality Kamdhenu TMT bars. With high ductility Kamdhenu TMT bars are best equipped to resist earthquakes of high impact. Kamdhenu brand HSD bars are being manufactured by most advanced German technology. Few tips to evaluate while purchasing any saria to give you the best quality and deal. When bent, saria should bend smoothly. Transverse Ribs or Lugs of the saria should be sharp. So that it bonds strongly with the cement. Don't use any saria that are made up of scrap. Because it does not guarantee endurance to heavy loads. Saria should be cold twisted, which increases strength and flexibility. Before purchasing saria, one should check its price in the newspapers. Branded companies publish their rate chart in the leading newspapers. Comparable weight of saria per meter should be according to ISI standards. Cross check when you weight the saria. Saria should be of any ISI & ISO 9001:2000 certified company. Every meter length of saria should bear company's stamp. Every bundle should carry company's seal on it. Estimate Weight or Number of Pcs per Bundle Bar Diameter (mm) Bundle Length (ft) *No of pcs. Weight/Meter (Kgs) * Weight of Bundle(Kgs) Permissible Tolerance(kgs) Bending Diameter 8 36/40 20-18 0.375-0.405 86/86 +2 10 36/40 15-13 0.585-0.620 99/95 +2 3D 12 36/40 10-9 0.860-0.910 97/97 +2 3D 16 40/42 05 1.530-1.600 95/100 +2 3D 20 40/44 03 2.420-2.500 90/99 +1 3D 25 40/44 01 3.775-3.855 47/51 +1 4D * Number of Pcs & weight of bundles may be differ from state to state CHEMICAL COMPOSITIONS Serial No. Content IS: 1786-85 KAMDHENU TMT 1 Carbon (Max) 0.30% 0.17 to 0.24% 2 Sulphur (Max) 0.060% 0.045% 3 Phosphorous (Max) 0.060% 0.045% 4 S+P (Max) 0.110% 0.090% 5 Carbon Equivalent (Max) 0.42% 0.38% Physical Properties (Fe-415) Serial No. TESTS IS:1786-85 KAMDHENU TMT 1 0.2 % proof stress (Min) 415 N/mm2 450 N/mm2 2 Elongation (Min) 14.50% 20.0% 3 Tensile Strength (Min) 10% more than 0.2% proof stress but not less then 485N/mm2 of good quality saria 10% more than 0.2% proof stress but not less then 530N/mm2 of good quality saria High Strength Deformed Bars (HSD) have high tensile and proof stress, and are being produced by high speed rolling and precision cold twisting. Features of Kamdhenu HSD Bars ISO 9001:2000 certified Steel bars manufucturing company with quality norms conforming to international standards. Production involves world-class high-speed fully automated plants (Rolling time 18 seconds) Tensile strength of the Kamdhenu Reinforcement bars is 20 percent more than ISI Standards. Weight per meter is less, compared to other brands (for consumer benefit). Billets/High quality raw material use for quality product. Regular distribution and timely supply throughout the year. Excellent network across India Strict quality control at each stage of production by the technical staff. Kamdhenu Stamp on each meter length & Kamdhenu strip on each bundle (for security). Technical Standards of Product BIS STANDARD KAMDHENU STANDARD Size Bar(mm) Lower Limit Standard Upper limit Weight Variation(gms/mtr) Min Max Weight Variation(gms/mtr) 8 0.367 0.395 0.423 56 0.375 0.405 30 10 0.574 0.617 0.660 86 0.585 0.620 40 12 0.844 0.888 0.932 88 0.860 0.910 50 16 1.501 1.580 1.659 158 1.530 1.600 70 20 2.396 2.470 2.544 148 2.420 2.500 80 25 3.735 3.850 3.966 231 3.775 3.855 80 Mechanical Properties As per IS:1786-85(Grade Fe415) Test BIS STANDARD KAMDHENU STANDARD 0.2% Proof stress (Min) 415.0 N/mm2 450 N/mm2 Tensile Strength(Min) 485 N/mm2 530 N/mm2 % Elongation (Min) 14.5% 20.0% Bend Test Upto & Incl. 22 mm3d Satisfies Bend Test on 2d & 3d Over 22 mm 4d Re-Bend Test Upto & Incl. 10 mm 5d Satisfies Bend Test on 4d & 5d Over 20 mm 6d -------------------------------------------------------------------------------- Strength of the bars are carefully controlled by optimizing the water pressure for their pearlitic core and tough surface of tempered martensite, thereby providing an optimum strength, ductility and toughness. TMT bars are widely used in general purpose concrete reinforcement structures, bridges and flyovers, dams, thermal and hydel power plants, industrial structures, high-rise buildings, underground platforms in metro railway and rapid transport system. TMT Bars are thermo-mechanically-treated through leading world temp core based technology for high yield strength. The process involves rapid quenching of the hot bars through a series of water jets after they roll out of the last mill stand. The bars are cooled, allowing the core and surface temperatures to equalize. The bar core cools down slowly to turn into a ferrlite-pearlite aggregate. Kamdhenu Ispat Ltd., Bhiwadi unit has been authorized by CRM, Belgium to manufacture Tempcore TMT under licence agreement. Features of TMT Tempcore Bars Enhanced strength combined with high ductility Excellent weldability without loss of strength at welded joints Better ductility and malleability Earthquake resistant High thermal resistance Significant savings in cost of steel Frequently asked question about Kamdhenu T.M.T Q: What is TMT Saria? A: It is a special type-of saria manufactured using a latest technology. In developed countries only TMT Saria is used for construction activities. Q: How TMT Saria is manufactured? A: This high quality saria is manufactured using most advanced technology of the 21st century called 'Thermo Mechanical Treatment'. Q: Why should you use TMT Saria? A: Because it is very strong and economical. Q: How it is economical? A: Because of its 20 % more strength. Q: Is TMT Saria used for high rising building, bridges and dams only? A: Not at all. It is used for all types of construction works ranging from buildings to dams. Q: So what are the other specialties of this saria? A: 1. It is earth quake resistant because of its high tensile strength and flexibility. 2. It is less affected by rust. 3. It has 4 % less weight per meter than normal that makes it economical. 4. It has more strength to sustain fire. 5. It bonds strongly with cement than other reinforcement bars. 6. It does not peel off the skin while working with it. Q: How can distinguish genuine Kamdhenu TMT Saria? A: Kamdhenu stamp on every meter of saria and red Kamdhenu strip on every bundle proves the genuineness of Kamdhenu TMT Saria. So watch out for these two things while purchasing Kamdhenu TMT Saria. Q: Is there duplicate TMT Saria available in the market? A: Yes, Duplicate TMT Saria are very much available in the market from local manufacturers who apply water on cheap saria during production to make them look alike TMT Saria. Some other brands are sold saying it is product of Kamdhenu. Q: How can duplicate TMT Saria be detected? A: Just avoid the local products. Go for reputed brands to avoid any cheating and fake products. Q: How many grades are there in TMT Saria? A: Fe - 415, Fe- 500 and Fe- 550 are three grades in TMT Saria. Fe- 550 is the strongest among the three. Kamdhenu has the credit of manufacturing Fe - 550 grade Saria first time in India. These three grades of Kamdhenu Saria come at 8 mm to 25 mm range. PROPERTIES/COMPOSITION INDIA (IS 1786) KAMDHENU TMT AMERICAN (ASTM A 615) EURO (DIN 488) MECHANICAL PROPERTIES Grade Fe - 415 Grade Fe - 415 - K Grade 40 (300) BSt 420 - S Proof Stress (Min.) 415 N/mm2 450 N/mm2 300 Mpa 420 MPA Tensile Strength (Min.) 485 N/mm2 530 N/mm2 500 Mpa 500 MPA Elongation (Min.) 14.50% 20% 12% 10% Bend Test (Min.) Upto 22 mm-3D Upto 22 mm-2D 10 to 16 mm-3.5Dupto 20 mm-5-D 6 To 12 MM-5d14

TMT / HSD BARS