Structural Engineers | Builders | Architects | Project Consultants | Civil Contractors

THE NEWINDUSTRY STANDARDHAS ARRIVED For the

Product Range of TMT rebars:

ELECTROTHERM (INDIA) LIMITED

Head Office & Works:72 Palodia, (Via Thaltej) Ahmedabad-382115, Gujarat, INDIA.

Phone : +91-2717-660550 Fax : +91-2717-234866

Web : www.electrotherm.com

CHEMISTRY CONTROLS STEEL QUALITY

NOW WE CONTROL THE CHEMISTRY OF STEEL!

The chemistry and thus the properties of the TMT Bars get compromised by the presence of

the harmful impurities like sulphur and phosphorous, in extreme weather conditions. The

advanced steel making process and practice can reduce the level of these impurities.

BIS has introduced the new category of bars called ‘D’- Ductile. Electrotherm has now a

dedicated production facility where 100% bars- 500D LPS is now produced in compliance with

500D grade specifications of BIS.

And the result is a revolution that places Electro TMT on par with the primary producers in the

ductile category of TMT bars!

TMT bars are the backbone of every structure; deep rooted in the foundation they bear the

load of building -slabs, beams, columns and of course the live load of the people and their

belongings. And as the strength of every structure, the TMT bars have to be ready to

withstand the loads like wind/storm, earthquake also. As the largest selling TMT

Bars of Gujarat, Electro TMT has carried forward the responsibility of staying the

very best, very sincerely and in keeping with the tradition of being a leader, we have

innovated and moved a step ahead now with the introduction of LPS 500D, TMT

bars made with 100% Iron Ore as metallic input.

Redefining steel making, Electrotherm has developed Fe 500D grade TMT bars

through the 100% iron ore plus refining route. It is the first time in India that TMT

bars have been produced through this route to meet the changing and more

stringent needs of the customers.

Because safety matters! TMT Bars matter

SKY IS NOT THE LIMIT

• Critical structures in seismic

zones III, IV, V

• High –rise buildings

• Bridges

• Flyovers

• Dams

• Foundation of wind turbines

• Industrial Structures

• Concrete Roads

• Underground Structures

• Thermal and hydro electric

power stations

• General purpose Concrete

re-enforcement structures

APPLYING PERFECTION TO PERFORMANCE

Advantages of

ŸLower phosphorus will improve ductility

ŸLower carbon level results in excellent

ductility and weldability

ŸThis grade is ideally suited for construction

in seismic zones and areas prone to

earthquake due to better shock resistance

properties

ŸStringent quality control through in-

house NABL approved physical and

chemical laboratories suitable for high

rise buildings, bridges, flyovers, dams &

industrial structures

ŸHigher resistance to failure

Ÿ Avoids localized shear failure

THE PRIDE IN PARTNERING INDIA GROWTH STORY

Application Areas

Advance German Technology

The Precision

(Mechanical chart and Chemical chart)

Mechanical Properties

*UP TO 20 MM 19% (MN), ABOVE 20MM 17%(MIN).

** IN PHYSICAL ALL SINGLE VALUE ARE MINIMUM

***AS OBTAINED IN 90% OF HEATS

IS 1786:2008

Ultimate Tensile Strength

Yield Stress

(UTS/YS) Ratio

Elongation

Total Elongation

2565 N/MM

2500 N/MM

1.10 1.15

16.0%

5.0%

*19.0%

8.0%

610

530

Chemical Composition

IS 1786:2008

Sulphur 0.04

Phosphorus 0.04 0.04

CE 0.42 0.42

Carbon 0.25 0.23

0.0375

Sulphur & Phosphorus 0.075 0.075

*IN CHEMICAL ALL SINGLE VALUE ARE MAXIMUM

The Properties - The Perfection

Comparison Chart

Only Induction

Furnace based

TMT Suppliers

Primary

ProducersET

Properties

Precise Controlon Elements Like P & S X

X

Partly

Partly

OK

Control on Tramp Elements

Gases Control

Mechanical Properties

Moderate Desired

Desired

Better Control Better Control

Inclusion Control Full

Process PerfectionŸ We have completely eliminated the use of Scrap in 500D LPS

grade.

Ÿ The new process uses 100% Iron Ore in place of scrap.

Ÿ This is achieved through the use of a combination of Blast

furnace-Sponge iron kilns-Induction melting furnace-Refining

furnace route.

Ÿ Good quality of Iron Ore is used in Blast Furnace of 128m3 and

Direct Reduced Iron Kilns of 250 and 350 TPD.

Ÿ 100% Iron Ore (hot metal from blast furnace and sponge iron

from kilns) and no scrap is used in the melting process.

Ÿ To meet the stringent phosphorous and sulphur requirement

of FE 500D grade of TMT bars, after melting the DRI from kilns and

hot metal from blast furnace in the induction furnaces, a unique

and patented ERF-ELdFOSTM metallurgical process is used to

dephosphorize the steel in the Ladle and desulphurize the steel

in Electrotherm Ladle Refining Furnace (ERF).

Ÿ Multi stage testing of steel chemistry is done through

spectrometer to ensure adherence to chemistry in close

tolerance.

Ÿ In the ERF:

Ÿ 1) Metal is also homogenized 2) Alloying elements are added

and controlled in a very narrow range 3) Dissolved gases in the

steel are lowered through mild purging of inert gases and

4) Inclusions are removed or altered chemically to ensure high

quality of steel.

Ÿ This refined steel is cast into billets of required sizes in closed

environment to have further control of gases and other inclusions.

Ÿ Molten Pig Iron (hot metal) from Blast Furnace and directly

reduced Iron (DRI/Sponge) from Kilns [=100% iron ore] is the key to

making superior quality TMT bars free from tramp elements like

Cu, V, Ni, Cr etc.

Advance German Technology

The Process ChartFrom manufacturing process to resulting properties,

everything is different and super dependable in

THE NEW INDUSTRY STANDARD

Superior

Rolling Mill

Thermex Quenching

System

Physical Testing Lab

Iron ore

Blast Furnace

Sponge Iron Kiln

Chemical Testing

Through Spectrometer

Induction Furnace

Ladle Refining Furnace

BilletsCaster

Reheating Furnace

Strength + Ductility + Bendability + Weldability

- Sulphur and Phosphorous Impurities*

= ELECTRO 500D LPS + Super Reliability

Advance German Technology