IS 2062 — Hot rolled medium and high tensile structural steel
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Scope
Indian structural steel for plate, strip, sections, flats and bars in grades E250, E275, E300, E350, E410, E450 and E550, each with quality sub-grades A, BR, B0 and C set by the impact requirement. Specifies chemical composition, carbon equivalent, yield stress by thickness, tensile strength, elongation and Charpy energy. This is the standard called up by IS 800, the Indian structural steel design code, and it is the specification on most Indian project drawings.
Grades covered by IS 2062
| Grade | No. | Type | C % | Yield MPa | Tensile MPa | Nearest equivalents |
|---|---|---|---|---|---|---|
| E250 | — | Hot rolled structural steel (Indian national standard) | ≤ 0.23 | 250 | ≥ 410 | s235jr, s275jr, a36 |
Revision history and superseded standards
| Year | Change |
|---|---|
| 1999 | Fe 410W A / B / C designation, based on tensile strength |
| 2006 | Renamed to the E-series by yield stress: Fe 410W A became E250A |
| 2011 | Current (seventh) revision; grades up to E550, carbon equivalent limits per sub-grade |
Supersedes: IS 2062:2006; IS 2062:1999 (Fe 410 designations); IS 226 (withdrawn).
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The full text is copyrighted by BIS (Bureau of Indian Standards) and is not reproduced here. Purchase the current edition from Bureau of Indian Standards (BIS) or your national standards body. The values on this site are the normative limits as published; the standard's own tables, notes and test methods govern.
Related standards
E is the yield, and the carbon equivalent is part of the grade
IS 2062 is the Indian structural steel standard called up by the IS 800 design code, so a structure designed in India is in practice designed in IS 2062 steel. The designation is the yield stress: E250 guarantees 250 MPa up to 20 mm, E350 guarantees 350, and the ladder runs to E550.
What distinguishes it from its Asian neighbours is that a carbon equivalent limit is part of the grade — 0.42 for E250A down to 0.39 for E250C — rather than a supplementary requirement. It is reported on the mill certificate as a matter of course, which makes the steel better defined for welding than JIS SS400 or plain GB Q235.
BR and B0 are different requirements
The sub-grade letter is the Charpy test. A has none. BR is tested at room temperature, B0 at 0 °C and C at −20 °C, each to 27 J. BR and B0 are read as "B room" and "B zero", and treating one as a typographical variant of the other is a real and recurring drawing error.
One further difference from European practice: the tensile requirement is a floor with no ceiling. An E250 plate meeting the 410 MPa minimum may test at 520 MPa and still conform, which matters for any welding or forming procedure written against a capped European band.