scope:

This part of IS0 4950 specifies the chemical composition and the mechanical properties of high yield strength flat steel products supplied in the normalized or/equivalent condition. For the method of manufacture, acceptance conditions and marking of these products, see IS0 4950-1.

It applies to hot-rolled plates, wide strip in coils of width greater than or equal to 600 mm, and wide flats in the thickness range 3 mm to 150 mm, in steels supplied after normalizing or controlled rolling, having a minimum specified yield strength of 355 N/mm² to 460 N/mm² for thicknesses up to and including 16 mm.

This part of IS0 4950 does not apply to products covered by other standards, such as

- flat products from continuous mills (see IS0 4996),

- flat products for subsequent forming operations (see IS0 5951),

- plates for pressure vessels (see IS0 9328-4).