Billet 2830
|
Concast Carbon Steel Billets For Re-rolling into Steels for General Structural purposes. IS 2830:2012
|
| Designation |
C % |
Mn % |
P % Max |
S % Max |
CE Max |
|
Grade
|
|
|
A |
B |
C |
A |
B |
C |
A |
B |
C |
C15
|
0.12-0.18
|
0.30-0.60 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.390 |
| C18 |
0.15-0.21 |
0.30-0.60 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.390 |
| C20 |
0.17-0.23
|
0.30-0.60 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.410 |
| C15MMn |
0.12-0.18 |
0.60-1.00 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.410 |
| C18MMn
|
0.15-0.21
|
0.60-1.00 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.410 |
| C20MMn
|
0.17-0.23
|
0.60-1.00 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.410 |
| C15HMn |
0.12-0.18 |
1.00 -1.50 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.410 |
C18HMn
|
0.15-0.21 |
1.00 -1.50 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.410 |
| C20HMn |
0.17-0.23 |
1.00 -1.50 |
0.050 |
0.045 |
0.040 |
0.050 |
0.045 |
0.040 |
0.420 |
0.410 |
0.410 |
C25HMn
|
0.30 Max |
1.80 Max |
0.060 Max |
0.060 Max
|
S + P: 0.11 Max
|
Size : 150x150mm or 100x100mm square with lengths 6 meters and 12
meters.
NOTES
- Steel can be ordered with restricted sulphur and phosphorous supplied on mutual agreement.
- The minimum Si content in silicon killed steel shall not be less than 0.10 percent when the steel is Al/Al-Si killed, the requirement regarding minimum silicon content need not apply. The silicon content shall not exceed 0.40 percent.
- When micro-alloying elements like Nb, V and Ti are used individually or in combination the total content shall not exceed 0.2 percent.
- Nitrogen content of the steel shall not exceed 0.012 percent and shall be ensured by occasional check analysis.
- TMT bars as per IS 1786: 2008 can be rolled from IS-2830: 2012 .
- When agreed upon restricted chemistry can be supplied to customers with quality extra
.