|  | C |
SECTION C — CHEMISTRY AND METALLURGY

METALLURGY

|  | C22 |
METALLURGY (of iron Fulltext... Hierarchy... Expanded...C21); FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR OF NON-FERROUS METALS

|  | C22C |
NON-FERROUS ALLOYS (heat treatment thereof Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...C22C 35/00)

|  | C22C 1/00 |
Making alloys (powder-metallurgical apparatus or processes, not specially modified for making alloys Fulltext... Hierarchy... Expanded...B22F; by electrolysis or electrothermic methods Fulltext... Hierarchy... Expanded...C22D)

|  | C22C 1/02 |
· | by melting

|  | C22C 1/04 |
· | by pressing or sintering (Fulltext... Hierarchy... Expanded...C22C 1/08 takes precedence; working metallic powder Fulltext... Hierarchy... Expanded...B22F)

|  | C22C 1/05 |
· · | Mixtures of metal powder with non-metallic powder (Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...C22C 9/06, Fulltext... Hierarchy... Expanded...C22C 9/08, Fulltext... Hierarchy... Expanded...C22C 9/10 take precedence)

|  | C22C 9/04 |
· | with zinc as a principal alloying element (Fulltext... Hierarchy... Expanded...C22C 9/06, Fulltext... Hierarchy... Expanded...C22C 9/08, Fulltext... Hierarchy... Expanded...C22C 9/10 take precedence)

|  | C22C 9/06 |
· | with nickel or cobalt as a principal alloying element (Fulltext... Hierarchy... Expanded...C22C 9/08, Fulltext... Hierarchy... Expanded...C22C 9/10 take precedence)

|  | C22C 9/08 |
· | with lead as a principal alloying element (Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...C22C (Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...C22C

|  | C22C 31/02 |
· | containing small quantities of radioactive materials

|  | C22C 31/04 |
· | containing less than 50% of non-metallic refractory materials (Fulltext... Hierarchy... Expanded...C22C 29/00 takes precedence; refractories containing 50% or more of non-metallic materials Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...C22C 37/02, Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...C22C 39/20, Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...C22C 39/10 and Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...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