Steel is an alloy of iron and carbon with less than 1.5% carbon, along with other elements like manganese, silicon, aluminum, and nickel. The percentage of carbon determines the type, with mild steel containing up to 0.25%, medium carbon steel 0.25-0.45%, and high carbon steel 0.45-1.5%. The compositions and hardness can vary greatly between different steel products. Steel is produced from raw materials like iron ore, limestone, and coal through processes like sintering, blast furnace production, basic oxygen furnace steelmaking, and continuous casting.

3. compositions of steels
oxygen
silicon
aluminum
iron
calcium
sodium
potassium
magnesium

4.  STEEEL IS AN ALLOY OF IRON AND CARBON
WITH ABOUT LESS THAN 1.5% CARBON.
o IT MAY ALSO CONTAIN OTHER ELEMENTS
SUCH AS
• MANGANESE
• SILICON
• ALUMINIUM
• NICKEL
BORON

5.  PERCENTAGE OF CARBON:
 MILD STEEL :UPTO 0.25%
 MEDIUM CARBON STEEL:0.25%-0.45%
 HIGH CARBON STEEL:0.45%-1.50%

6.  COMPOSITIONS:IT IS CLOSELY LINKED TO ITS
COMPOSITIONS .
 THERE IS BIG DIFFERENCE IN COMPOSITIONS
AND HARDNESS BETWEEN THE STEEL OF A
DRINK CAN AND A PAIR OF SCISSORS,THE
SCISSORS CONTAIN MORE HARDNESS AND IT
HAS 20 TIMES MORE CARBON

8.  The raw materials like lime stone, iron ore,
coal.come from RMHP&COKE OVEN PLANT
 SINTER PROCESS IS DONE HERE ,AFTER THAT
SINTER ALONG WITH OTHER RAW MATERIALS
ARE MOVED BLAST FURNACE
 AFTER COMPLETION OF BLAST FURNACE
PROCESS, THE MOLTEN METAL MOVED TO
BASIC OXYGEN FURNACE THROUGH THE HELP
OF TURPIDO LADLE FOR MAKING STEEL

11.  HERE THE HOT IS POURED INTO THE
CONVERTER
 BOF PROCESS IS TAKES PLACE,FOR GETTING
THE LIQUIDFIED STEEL FROM THE PIG IRON

13.  AFTER THE HOT METAL IS POURED,THE
LANCING TAKES PLACE
 USING A LANCE PIPE THE OXYGEN IS BLOWED
IN THE HOT METAL CONVERTER
 THUS , OXIDATION PROCESS TAKES PLACE,
THEN THE STEEL IS OXIZED
 TEMPERATURE OF THE CONVERTER IS NEARLY
1700C

15.  AFTER THE BOF PROCESS THE LIQUIDFIED
STEEL MOVED TO THE SECONDARY
METALLURGY LADLE FURNACE
 HERE ELECTRODES ARE USED TO GENERATE
ARC THAT MAKES THE FURNACE TO REACH
HIGH TEMPERATURE


17.  Continuous casting may be defined as
teeming of liquid steel in a mould through
which partially solidified ingot/bar, is
continuously withdrawn at the same rate at
which liquid steel is teemed in the mould
 For smooth casting the following are
essential:
homogenization of steel composition and
temperature
Superheat of casting
Oxygen potential of steel

20.  BLOOMS/BILLETS:MILD STEEL/LOW,MEDIUM&HIGH
CARBON STEEL,FORGING QUALITY
 ROUNDS:MILD STEEL ,LOW,MEDIUMCARBON,BRIGHT
BAR&FORGING QUALITY
 REBARS:THERMO MECHANICALLY TREATED[TMT]BARS
OF DIFFERENT YIELD STRENGTHS
 STRUCTURALS:STRUCTURAL STEEL AND HIGH TENSILE
STEEL
 WIRE RODS:LOW CARBON,WIRE DRAWING,BRIGHT
BAR,ELECTRODE QUALITY, COLD
HEADING,QUALITY,TYRE-BEAD AND OTHER HIGH
CARBON GRADES