MODUK DEF STAN 01-8 PDF

The Group System applies to carbon, carbon-manganese and alloy steels in the following wrought forms:

Billet or blooms

Slabs

Bars

Rods

Forgings

Plate

The System is not intended to cover steel for use in special applications such as breech rings, breech blocks, shells etc.

The System provides a schedule of steels suitable for use in the final heat treatment condition or for final heat treatment as a part machined or finish machined stage. The appropriate steel Group must be selected with regard to the effect of equivalent ruling section which shall be interpreted in accordance with BS 5046.

When special properties eg flame hardening characteristics, deep drawing qualities, welding or brazing requirements are needed, it may be necessary to specify a particular steel and not allow alternatives as will the Group System.