What are the common structural grades in IS 4923?

The standard specifies three main grades based on yield stress: YSt 210, YSt 240, and YSt 310.

Are these steel sections suitable for structural welding?

Yes, they are manufactured with controlled carbon equivalent values to be suitable for welding under standard structural conditions.

What is the standard tolerance on outside dimensions for square sections?

Typically ±1% of the specified dimension, subject to a minimum of ±0.5 mm.

IS 4923

: 1968

Code of Practice for Woven Wire Fences

CurrentFrequently UsedSpecificationBIMStructural Engineering · Fencing, Gates and Barriers

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Specification for hot-formed and cold-formed carbon steel square, rectangular, and circular hollow sections intended for structural use, commonly used in structural framing, space frames, and heavy-duty barrier structures.

Lays down recommendations for the erection of woven wire fences, including materials and workmanship.

Quick Reference Values

Yield Stress (YSt 210)210 MPa

Yield Stress (YSt 240)240 MPa

Yield Stress (YSt 310)310 MPa

Tensile Strength (YSt 310)450 MPa

Maximum Sulphur content0.050 %

Maximum Phosphorus content0.050 %

Practical Notes

Note: While sometimes grouped under 'Fencing and Gates' due to its common application as structural posts and barrier rails, IS 4923 strictly specifies hollow steel sections (RHS/SHS/CHS).

Ensure to specify the correct yield stress grade (YSt 210, 240, or 310) during procurement to meet structural design requirements.

Cold formed sections may require stress relieving depending on the application and extensive welding requirements.