IPC 7 English version C22F !A-C22F 3/02

C22F-C22F00302

SECTION C – CHEMISTRY; METALLURGY

C 22

METALLURGY (of iron C21); FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS (general methods or devices for heat treatment of ferrous or non-ferrous metals or alloys C21D; production of metals by electrolysis or electrophoresis C25)

C 22 F

CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F 17/00)

Note

In this subclass, it is desirable to add the indexing codes of subclass C22K. The indexing codes should be unlinked. [6]

Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal B21, B23, B24)

in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C21D 1/76)

of aluminium or alloys based thereon

043

of alloys with silicon as the next major constituent [4]

047

of alloys with magnesium as the next major constituent [4]

of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions [4]

053

of alloys with zinc as the next major constituent [4]

057

of alloys with copper as the next major constituent [4]

of magnesium or alloys based thereon

of copper or alloys based thereon

of nickel or cobalt or alloys based thereon

of chromium or alloys based thereon

of lead or alloys based thereon

of noble metals or alloys based thereon

of other metals or alloys based thereon

High-melting or refractory metals or alloys based thereon

Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons

by solidifying a melt controlled by supersonic waves or electric or magnetic fields