What density is used to calculate the mass of steel flats?

A standard density of 7.85 kg/dm³ (or 7850 kg/m³) is used.

Does this standard provide tolerances for steel dimensions?

No, IS 1730 provides nominal dimensions. For dimensional tolerances, it references IS 1852.

What is the difference between a plate and a sheet per typical Indian standards?

Generally, rolled steel flat products with a thickness of 5 mm and above are classified as plates, while those below 5 mm are classified as sheets.

IS 1730 Part 1

: 1989

Dimensions for Steel Flats - Part 1: Rolled Steel Flats

CurrentFrequently UsedSpecificationBIMStructural Engineering · Steel and Reinforcement

Download PDF BIS Portal Google

This standard specifies the standard dimensions and sectional mass of hot-rolled steel plates, sheets, strips, and flats used for structural and general engineering purposes. It guides engineers and fabricators in selecting standardized sizes to optimize production and minimize waste.

Specifies the dimensions of hot rolled steel flats for general engineering purposes.

Quick Reference Values

Density of steel for mass calculation7.85 kg/dm³ (7850 kg/m³)

Standard thickness range for flats3 mm to 40 mm

Standard width range for flats10 mm to 250 mm

Key Formulas

Mass per meter of flat (kg/m) = Width (mm) × Thickness (mm) × 0.00785

Practical Notes

Always prefer standard sizes specified in this code for structural detailing to ensure material availability and reduce procurement costs.

This code provides nominal dimensions only. For allowable rolling and cutting tolerances, you must refer to IS 1852.

Material properties (like yield strength and tensile strength) are not covered here; refer to IS 2062 for structural steel grades.