


| Section Type | Grade | Mechanical Properties | Dimensional Tolerance | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| YST | UTS MPa | % of Elongation | Outside dimension | Thickness | Squareness | Corner radius | Weight | |||||
| MPa | MPa | < 25mm | > 25mm | Individual Lengths | On Lot of 10 | |||||||
| RHS/SHS IS : 4923 | YST 210 | 210 | 330 | 12 | 20 | +/-1% with a minimum of +/-0.50 mm | +/-10% | 90 deg. +/-2 deg. | 3t max | L +10%,-8% | +/-7.5% | |
| YST 240 | 240 | 410 | 10 | 15 | On lot of 10 MT +/-7.5% | |||||||
| YST 310 | 310 | 450 | 8 | 10 | M & H +/-10% | |||||||
| CHS IS : 1161 | YST 210 | 210 | 330 | 12 | 20 | OD upto and incl 48.3+0.4/-0.8mm. Over 48.3, +/-1.0% | no limit -10% | NA | NA | L +10%,-8% | L +/-5% | |
| YST 240 | 240 | 410 | 12 | 17 | ||||||||
| YST 310 | 310 | 450 | 12 | 14 | L + 10%, -8% | M & H +/-7.5% | ||||||