C
SECTION C — CHEMISTRY AND METALLURGY
  
METALLURGY
 C22
METALLURGY (of iron C21); FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS (production of metals by electrolysis or electrophoresis C25)
 C22C
ALLOYS (treatment thereof C21D, C22F)
 C22C

Note(s)

  1. In the absence of an indication to the contrary, in groups C22C 5/00-C22C 32/00 an alloy is classified in the last appropriate place.
  2. The term "based on" requires at least 50% by weight of the specified constituent or of the specified group of constituents. [2]
 C22C 1/00 - 
C22C 32/00
Non-ferrous alloys, i.e. alloys based essentially on metals other than iron (master alloys for iron and steel C22C 35/00; alloys containing radioactive material C22C 43/00)
 C22C 1/00
Making alloys (powder-metallurgical apparatus or processes, not specially modified for making alloys B22F; by electrothermic methods C22B 4/00; by electrolysis C25C)
 C22C 1/02
·  by melting
 C22C 1/03
·  ·  using master alloys  [2]
 C22C 1/04
·  by powder metallurgy (C22C 1/08, C22C 1/09 take precedence)  [2]
 C22C 1/05
·  ·  Mixtures of metal powder with non-metallic powder (C22C 1/08, C22C 1/09 take precedence)  [2]
 C22C 1/06
·  with the use of special agents for refining or deoxidising
 C22C 1/08
·  Alloys with open or closed pores
 C22C 1/09
·  Alloys containing metallic or non-metallic fibres or filaments  [2]
 C22C 1/10
·  Alloys containing non-metals (C22C 1/08, C22C 1/09 take precedence)  [2]
 C22C 3/00
Removing material from alloys to produce alloys of different constitution
 C22C 5/00
Alloys based on noble metals
 C22C 5/02
·  Alloys based on gold  [2]
 C22C 5/04
·  Alloys based on a platinum group metal  [2]
 C22C 5/06
·  Alloys based on silver  [2]
 C22C 5/08
·  ·  with copper as the next major constituent  [2]
 C22C 5/10
·  ·  with cadmium as the next major constituent  [2]
 C22C 7/00
Alloys based on mercury
 C22C 9/00
Alloys based on copper
 C22C 9/01
·  with aluminium as the next major constituent  [2]
 C22C 9/02
·  with tin as the next major constituent
 C22C 9/04
·  with zinc as the next major constituent
 C22C 9/05
·  with manganese as the next major constituent  [2]
 C22C 9/06
·  with nickel or cobalt as the next major constituent
 C22C 9/08
·  with lead as the next major constituent
 C22C 9/10
·  with silicon as the next major constituent
 C22C 9/12
·  made by powder metallurgy  [2]
 C22C 11/00
Alloys based on lead
 C22C 11/02
·  with an alkali or an alkaline earth metal as the next major constituent
 C22C 11/04
·  with copper as the next major constituent  [2]
 C22C 11/06
·  with tin as the next major constituent  [2]
 C22C 11/08
·  with antimony or bismuth as the next major constituent  [2]
 C22C 11/10
·  ·  with tin  [2]
 C22C 12/00
Alloys based on antimony or bismuth  [2]
 C22C 13/00
Alloys based on tin
 C22C 13/02
·  with antimony or bismuth as the next major constituent  [2]
 C22C 14/00
Alloys based on titanium  [2]
 C22C 15/00
( transferred to C22C 14/00, C22C 16/00 )
 C22C 16/00
Alloys based on zirconium  [2]
 C22C 17/00
( transferred to C22C 18/00, C22C 20/00 )
 C22C 18/00
Alloys based on zinc  [2]
 C22C 18/02
·  with copper as the next major constituent  [2]
 C22C 18/04
·  with aluminium as the next major constituent  [2]
 C22C 19/00
Alloys based on nickel or cobalt
 C22C 19/02
( covered by C22C 19/07 )
 C22C 19/03
·  based on nickel  [2]
 C22C 19/04
( covered by C22C 19/00-C22C 19/07 )
 C22C 19/05
·  ·  with chromium  [2]
 C22C 19/07
·  based on cobalt  [2]
 C22C 19/08
·  made by powder metallurgy  [2]
 C22C 20/00
Alloys based on cadmium  [2]
 C22C 21/00
Alloys based on aluminium
 C22C 21/02
·  with silicon as the next major constituent
 C22C 21/04
·  ·  Modified aluminium-silicon alloys
 C22C 21/06
·  with magnesium as the next major constituent  [2]
 C22C 21/08
·  ·  with silicon  [2]
 C22C 21/10
·  with zinc as the next major constituent  [2]
 C22C 21/12
·  with copper as the next major constituent  [2]
 C22C 21/14
·  ·  with silicon  [2]
 C22C 21/16
·  ·  with magnesium  [2]
 C22C 21/18
·  ·  with zinc  [2]
 C22C 21/20
·  made by powder metallurgy  [2]
 C22C 22/00
Alloys based on manganese  [2]
 C22C 23/00
Alloys based on magnesium
 C22C 23/02
·  with aluminium as the next major constituent  [2]
 C22C 23/04
·  with zinc or cadmium as the next major constituent  [2]
 C22C 23/06
·  with a rare earth metal as the next major constituent  [2]
 C22C 24/00
Alloys based on an alkali or an alkaline earth metal  [2]
 C22C 25/00
Alloys based on beryllium
 C22C 27/00
Alloys based on rhenium or a refractory metal not mentioned in groups C22C 14/00 and C22C 16/00  [2]
 C22C 27/02
·  Alloys based on vanadium, niobium or tantalum  [2]
 C22C 27/04
·  Alloys based on tungsten or molybdenum  [2]
 C22C 27/06
·  Alloys based on chromium  [2]
 C22C 28/00
Alloys based on a metal not provided for in groups C22C 5/00-C22C 27/00  [2]
 C22C 29/00
Alloys based on borides, carbides, nitrides, oxides or silicides  [2]
 C22C 30/00
Alloys containing less than 50% by weight of each constituent  [2]
 C22C 30/02
·  containing copper  [2]
 C22C 30/04
·  containing tin or lead  [2]
 C22C 30/06
·  containing zinc  [2]
 C22C 31/00
( transferred to C22C 28/00, C22C 30/00 )
 C22C 31/02
( transferred to C22C 43/00 )
 C22C 31/04
( transferred to C22C 32/00 )
 C22C 32/00
Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of borides, carbides, nitrides, oxides, or silicides of refractory metals, whether added as such or formed in situ  [2]
 C22C 33/00 - 
C22C 38/00
Ferrous alloys (alloys containing radioactive material C22C 43/00; heat treatment thereof C21D)
 C22C 33/00
Making ferrous alloys
 C22C 33/02
·  by powder metallurgy (working metallic powder B22F)
 C22C 33/04
·  by melting  [2]
 C22C 33/06
·  ·  using master alloys  [2]
 C22C 33/08
·  Making cast-iron alloys  [2]
 C22C 33/10
·  ·  including procedures for adding magnesium  [2]
 C22C 33/12
·  ·  ·  by fluidised injection  [2]
 C22C 35/00
Master alloys for iron or steel
 C22C 37/00 - 
C22C 38/00

Note(s)

In the absence of an indication to the contrary, in groups C22C 37/00 and C22C 38/00 an alloy is classified in the last appropriate place that provides for one of the alloying components. [2]

 C22C 37/00
Cast-iron alloys  [2]
 C22C 37/02
( transferred to C22C 37/00-C22C 37/10 )
 C22C 37/04
·  containing spheroidal graphite
 C22C 37/06
·  containing chromium  [2]
 C22C 37/08
·  ·  with nickel
 C22C 37/10
·  containing aluminium or silicon
 C22C 38/00
Ferrous alloys, e.g. steel alloys (cast-iron alloys C22C 37/00)  [2]
 C22C 38/02
·  containing silicon  [2]
 C22C 38/04
·  containing manganese  [2]
 C22C 38/06
·  containing aluminium  [2]
 C22C 38/08
·  containing nickel  [2]
 C22C 38/10
·  containing cobalt  [2]
 C22C 38/12
·  containing tungsten, tantalum, molybdenum, vanadium or niobium  [2]
 C22C 38/14
·  containing titanium or zirconium  [2]
 C22C 38/16
·  containing copper  [2]
 C22C 38/18
·  containing chromium  [2]
 C22C 38/20
·  ·  with copper  [2]
 C22C 38/22
·  ·  with molybdenum or tungsten  [2]
 C22C 38/24
·  ·  with vanadium  [2]
 C22C 38/26
·  ·  with niobium or tantalum  [2]
 C22C 38/28
·  ·  with titanium or zirconium  [2]
 C22C 38/30
·  ·  with cobalt  [2]
 C22C 38/32
·  ·  with boron  [2]
 C22C 38/34
·  ·  with more than 1.5% by weight of silicon  [2]
 C22C 38/36
·  ·  with more than 1.7% by weight of carbon  [2]
 C22C 38/38
·  ·  with more than 1.5% by weight of manganese  [2]
 C22C 38/40
·  ·  with nickel  [2]
 C22C 38/42
·  ·  ·  with copper  [2]
 C22C 38/44
·  ·  ·  with molybdenum or tungsten  [2]
 C22C 38/46
·  ·  ·  with vanadium  [2]
 C22C 38/48
·  ·  ·  with niobium or tantalum  [2]
 C22C 38/50
·  ·  ·  with titanium or zirconium  [2]
 C22C 38/52
·  ·  ·  with cobalt  [2]
 C22C 38/54
·  ·  ·  with boron  [2]
 C22C 38/56
·  ·  ·  with more than 1.7% by weight of carbon  [2]
 C22C 38/58
·  ·  ·  with more than 1.5% by weight of manganese  [2]
 C22C 38/60
·  containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulphur  [2]
 C22C 39/00
( transferred to C22C 38/00 )
 C22C 41/00
( transferred to C21D 6/00-C21D 6/04 )
 C22C 43/00
Alloys containing radioactive materials  [2]