C
SECTION C — CHEMISTRY AND METALLURGY
  
METALLURGY
 C22
METALLURGY (of iron C21); FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR OF NON-FERROUS METALS
 C22C
NON-FERROUS ALLOYS (heat treatment thereof C22F); FERROUS ALLOYS; TREATMENT THEREOF
 C22C 1/00 - 
C22C 31/00
Non-ferrous alloys, i.e. alloys based essentially on metals other than iron (master alloys for iron and steel C22C 35/00)
 C22C 1/00
Making alloys (powder-metallurgical apparatus or processes, not specially modified for making alloys B22F; by electrolysis or electrothermic methods C22D)
 C22C 1/02
·  by melting
 C22C 1/04
·  by pressing or sintering (C22C 1/08 takes precedence; working metallic powder B22F)
 C22C 1/05
·  ·  Mixtures of metal powder with non-metallic powder (C22C 1/08 take precedence)
 C22C 1/06
·  with the use of special agents for refining or deoxidising
 C22C 1/08
·  Alloys with open or closed pores
 C22C 1/10
·  Alloys containing non-metals (C22C 1/08 takes precedence)
 C22C 3/00
Removing material from alloys to produce alloys of different constitution
 C22C 5/00
Alloys with noble metals as the most important constituent
 C22C 7/00
Alloys based on mercury, i.e. amalgams
 C22C 9/00
Alloys based on copper
 C22C 9/02
·  with tin as a principal alloying element (C22C 9/06, C22C 9/08, C22C 9/10 take precedence)
 C22C 9/04
·  with zinc as a principal alloying element (C22C 9/06, C22C 9/08, C22C 9/10 take precedence)
 C22C 9/06
·  with nickel or cobalt as a principal alloying element (C22C 9/08, C22C 9/10 take precedence)
 C22C 9/08
·  with lead as a principal alloying element (C22C 9/10 take precedence)
 C22C 9/10
·  with silicon as a principal alloying element
 C22C 11/00
Alloys based on lead
 C22C 11/02
·  with alkali or alkaline earth metals
 C22C 13/00
Alloys based on tin
 C22C 15/00
Alloys based on titanium or zirconium
 C22C 17/00
Alloys based on zinc or cadmium
 C22C 19/00
Alloys based on nickel or cobalt
 C22C 19/02
·  Hard alloys; Stellites
 C22C 19/04
·  with high creep-resistance
 C22C 21/00
Alloys based on aluminium
 C22C 21/02
·  with silicon
 C22C 21/04
·  ·  Modified aluminium-silicon alloys
 C22C 23/00
Alloys based on magnesium
 C22C 25/00
Alloys based on beryllium
 C22C 27/00
Alloys based on high-melting or refractory metals not previously mentioned in sub-class C22C (C22C 29/00 takes precedence)
 C22C 29/00
Hard alloys based on carbides, nitrides, borides or silicides
 C22C 31/00
Non-ferrous alloys not mentioned before in sub-class C22C
 C22C 31/02
·  containing small quantities of radioactive materials
 C22C 31/04
·  containing less than 50% of non-metallic refractory materials (C22C 29/00 takes precedence; refractories containing 50% or more of non-metallic materials C04B)
 C22C 33/00 - 
C22C 41/00
Ferrous alloys
 C22C 33/00
General methods for making ferrous alloys
 C22C 33/02
·  by pressing or sintering
 C22C 35/00
Master alloys used for iron and steel
 C22C 37/00
Cast-iron alloys; Treatments thereof
 C22C 37/02
·  for making malleable castings
 C22C 37/04
·  for making castings containing spheroidal graphite
 C22C 37/06
·  containing chromium as an essential alloying element (C22C 37/02, C22C 37/04 take precedence)
 C22C 37/08
·  ·  containing chromium and nickel
 C22C 37/10
·  containing aluminium or substantial amounts of silicon as essential alloying elements
 C22C 39/00
Steel alloys; Other ferrous alloys; Treatments thereof
 C22C 39/02
·  containing aluminium as an essential alloying elements
 C22C 39/04
·  ·  containing aluminium and silicon as an essential alloying elements
 C22C 39/06
·  ·  ·  Uses requiring resistance to heat, scaling, or corrosion
 C22C 39/08
·  containing cobalt as an essential alloying element
 C22C 39/10
·  ·  containing cobalt and nickel
 C22C 39/12
·  ·  ·  Uses requiring special magnetic properties
 C22C 39/14
·  containing chromium as an essential alloying element (C22C 39/20, C22C 39/26 take precedence)
 C22C 39/16
·  ·  containing 12% or more of chromium
 C22C 39/18
·  ·  ·  Uses requiring resistance to scaling or corrosion
 C22C 39/20
·  containing chromium an nickel as essential alloying elements (C22C 39/26 takes precedence)
 C22C 39/22
·  ·  Uses requiring resistance to scaling or corrosion
 C22C 39/24
·  ·  Uses requiring special electric or magnetic properties
 C22C 39/26
·  containing chromium and manganese as essential alloying elements
 C22C 39/28
·  ·  Uses requiring resistance to abrasion
 C22C 39/30
·  containing manganese as essential alloying element (C22C 39/26 takes precedence)
 C22C 39/32
·  ·  containing 10% or more of manganese
 C22C 39/34
·  ·  ·  Uses requiring resistance to abrasion
 C22C 39/36
·  containing nickel as essential alloying element (C22C 39/10 and C22C 39/20 take precedence)
 C22C 39/38
·  ·  Uses requiring special electric or magnetic properties
 C22C 39/40
·  ·  containing 10% or more of nickel
 C22C 39/42
·  ·  ·  Uses requiring resistance to corrosion
 C22C 39/44
·  containing silicon as an essential alloying element (C22C 39/04 takes precedence)
 C22C 39/46
·  ·  Uses requiring special electric or magnetic properties
 C22C 39/48
·  ·  Uses requiring resistance to scaling or corrosion
 C22C 39/50
·  containing tungsten, molybdenum, or vanadium as essential alloying element(s)
 C22C 39/52
·  ·  adapted for high speed tools
 C22C 39/54
·  containing other elements as essential alloying element(s)
 C22C 41/00
Heat treatment of ferrous alloys
 C22C 41/02
·  Hardening by precipitation
 C22C 41/04
·  Hardening by cooling below 0 °C