| M. S. Billets
Shyam Steel Industries Ltd. produces a wide range of Continuously casted Billets in its
Integrated Steel Plant. The state-of-art technology of Concast AG Zurich imparts
international quality standards and ensures smooth and defect-free casting of billets.
The Billets produced by the company can be broadly divided into three
main types i.e.
- M.S. Billets
- CRS Billets
- Special Alloy Billets
M.S. Billets are used for rolling of TMT Re-Bars of Fe415 and Fe500
Grade and various other structural steel products.
CRS Billets are used fro rolling of CRS TMT Re-Bars.
Special Alloy Billets are used for rolling of any special grade TMT
Re-Bars like Earthquake resistant TMT Re-Bars and for special grade structural steel
products.
The following are the sizes of Billets available with Shyam Steel Industries Ltd.:
- 100 X 100
- 125 X 125
- 150 X 150
Physical Properties:
Description |
As per
IS 2830 |
Shyam
Billets |
| Bend (max.) |
5 mm per meter |
>= 5 mm per meter |
| Carbon (max.) |
3mm per meter |
>= 3 mm per meter |
| Length |
3 mt - 13 mt |
3 mt - 9 mt |
Chemical Properties:
Ladle Analysis: |
Designation |
Carbon |
Manganese |
| C15 |
0.12-0.18 |
0.30-0.60 |
| C18 |
0.15-0.21 |
0.30-0.60 |
| C20 |
0.17-0.23 |
0.30-0.60 |
| C15 MMn |
0.12-0.18 |
0.60-1.00 |
| C18 MMn |
0.15-0.21 |
0.60-1.00 |
| C20 MMn |
0.17-0.23 |
0.60-1.00 |
| C15 HMn |
0.12-0.18 |
1.00-1.50 |
| C18 HMn |
0.15-0.21 |
1.00-1.50 |
C20 HMn |
0.17-0.23 |
1.00-1.50 |
Billets of different designations are manufactured in three different
grades namely A, B, C having sulphur, phosphorous content (on ladle analysis) and carbon
equivalent as follows:
| Chemical Analysis: |
| Grade |
Sulphur |
Phosphorous |
Carbon Equivalent
(CE)1 |
| |
Max |
Max |
Max |
| A |
0.05 |
0.05 |
0.42 |
| B |
0.045 |
0.045 |
0.41 |
| C |
0.04 |
0.04 |
0.39 |
Carbon equivalent based on ladle analysis =
| C+ Mn + |
Cr+Mo+V + |
Nl+Cu |
| 6 |
5 |
15 |
When steel is required in copper bearing quality, copper content is between 0.20 60
0.35 percent.
Features:
The following are the Special features of the Shyam Steel Billets:
Excellent Surface Finish: The Billets produced by Shyam Steel are free
from any surface crack or lamination. Magnetic particle test in order to identify any
crack on the surface is done on a regular basis as per its Quality Management Plan.
Dimensional Tolerance: Billets at Shyam Steel Industries Ltd. are
produced strictly in accordance to IS 2830 for dimensional tolerance.
No Internal Defects: The Billets produced are free from any internal
defects. Defects such as piping blowholes and pinholes are identified and segregated by
Sulphur Print Test.
Excellent Corrosion Resistant property: The Special range of Billets
known as CRS Billets produced by the company contain various corrosion resistant elements
like copper, chromium and phosphorous that impart corrosion resistance to the TMT Re-Bars
rolled out of this special type of Billets. The minimum CRE% (Cu% + Cr% + P%) is 0.50%
|
