Our Premium Channels Depth – The tolerance on depth of channels shall be as follows :
| Depth | Tolerance | |
|---|---|---|
| Over mm | Up to and including mm | mm |
| – | 200 | ±2.5 |
| 200 | 400 | ±3.0 |
Width of Flange : The tolerance on Flange width up to and including 100 mm shall be +2mm. Flanges out-of-square or Out-of-parallel — The Flanges shall be parallel within 1 in 60 tolerance. (See Frg 1.1)
Flatness of Web : The tolerance on flatness of outer face of web shall be as follow : (See Fig 1.2)
| Concavity | Not Permitted |
|---|---|
| Convexity | 15% of nominal thickness of web |
Cumber & Sweep : The maximum permissible cumber and sweep for channels shall be 0.20 percent of the length (see fig 1.3)
| S.No | Size of Channel |
|---|---|
| 1 | Channel Heavy – 75 X 40 , 100 X 50 |
| 2 | Channel Medium – 75 X 40 , 100 X 50 |
| 3 | Channel Light – 75 X 40 , 100X50 |
| 4 | Channel Heavy – 125X65 |
| 5 | Channel Heavy – 150X75 |
| 6 | Channel Light – 125X65 |
| 7 | Channel Light – 150X75 |
Weight : The tolerance on weight per meter shall be : 2.5% for steel conforming to IS : 2062
Dimensions and Properties (As per IS:2062 Specification)
| Min. Weight (kg/mtr) | STD Weight (kg/mtr) | Max. Weight (kg/mtr) | D (mm) | B (mm) | t (mm) | T (mm) | Flange Slope Degree | R1 (mm) | R2 (mm) | |
|---|---|---|---|---|---|---|---|---|---|---|
| MC 75 | 6.9615 | 7.140 | 7.3185 | 75 | 40 | 4.8 | 7.5 | 96 | 8.5 | 2.4 |
| MC 100 | 9.321 | 9.560 | 9.799 | 100 | 50 | 5.0 | 7.7 | 96 | 9.0 | 2.4 |
| MC 125 | 12.7725 | 13.100 | 13.4275 | 125 | 65 | 5.3 | 8.2 | 96 | 9.5 | 2.4 |
| MC 150 | 16.380 | 16.800 | 17.220 | 150 | 75 | 5.7 | 9.0 | 96 | 10.0 | 2.4 |
Physical Properties and Chemical Composition
of Structural Steel As per IS:2062:2006
| Grade Designation | Quallity | Chemical Composition | Mechanical Properties | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ladle Analysis, Percent & Max. | Tensile Strength Min. M. Po. | Yield Streess Mn. M. Po. | Elangation %Min. of Gauge Length 5.65 | Identical Based Diameter Max. | |||||||
| C | Mo | S | P | Si | CE | <20 | <25 | ||||
| E-250 (480W) | A | 0.23 | 1.50 | 0.045 | 0.045 | 0.400 | 0.420 | 410 | 250 | 23 | 2t |