BS 4276:1968

This standard BS 4276:1968 Specification for hard metal for wire, bar and tube drawing dies is classified in these ICS categories:

• 77.160 Powder metallurgy

1.1 This British Standard specifies requirements for Hard Metal grades generally used in the manufacture of dies for cold drawing wire, bar and tube in ferrous and non-ferrous metals and alloys.

1.2 Special Hard Metal grades in which some or all of the cobalt is present as eta-phase or in which binder metals other than Cobalt are used, are excluded from this specification.

Eight types. Hardness, composition and grain size.