| CHEMICAL COMPOSITION |
Constituent |
Maximum Percentage |
| . |
SAIL
TMT415 |
Fe
415 |
SAIL
TMT
500 |
Fe
500 |
SAIL
TMT
550 |
Fe
550 |
SAIL-TMT
HCR(Fe415/ 500/ 550) |
| Carbon |
0.25 |
0.30 |
0.25 |
0.30 |
0.25 |
0.30 |
0.20 |
| Sulphur |
0.05 |
0.06 |
0.05 |
0.055 |
0.05 |
0.055 |
0.045 |
Phosphorus |
0.05 |
0.06 |
0.05 |
0.055 |
0.05 |
0.050 |
0.045 |
| Sulphur
andPhosphours |
0.10 |
0.11 |
0.10 |
0.105 |
0.10 |
0.10 |
0.09 |
Corrosion
Resistant
Elements |
- |
- |
- |
- |
- |
- |
0.75min |
| Carbon
Equivalent |
- |
- |
- |
- |
- |
-
|
0.53
max |
|
| MECHANICAL PROPERTIES |
| Property
Grade |
| . |
Fe
415 |
SAIL
TMT
415 |
Fe
500 |
SAIL
TMT
500 |
Fe
550 |
SAIL
TMT
550 |
0.2
per cent proof stress/
yield stress, Min N/mm.sq. |
415 |
415 |
500 |
500 |
550 |
550 |
| Elongation
per cent,Min,on gauge length 5.65 sqrt( A) where A is the cross sectional area of the test
piece |
14.5 |
22(upto
28 mm dia) 20(Above 28 mm dia) |
12 |
20(upto28
mm dia) 18
(Above 26 mm dia) |
8 |
18(upto
25 mm dia)
16 (Above28
mm dia) |
Tensile
Strength, Min |
10%
more
than the actual0.2%
proofstress
but not less
than 485
N/mm² |
10%
more than the actual0.2% proofstress
but not less than 500 N/mm² |
8%
more
than the
actual0.2%
proofstress but not less than 545 N/mm² |
8%
more than the actual0.2% proofstress but not less than 580 N/mm² |
6%
more
\than the
actual0.2%
proofstress
but not less
than 585
N/mm² |
6 % more
than the
actual0.2%
proofstress
but not less
than 630
N/mm² |
| . |
. |
. |
(Upto 28 mm dia.) &
560N/mm² (above28 mm dia.)
|
( Upto 28 mm dia.) & 560N/mm²
(above 28mm dia.)......
. |
