See : Help:Basic membership properties for more information about on how using the classes. instance of (P31) shall rarely used since most materials related items are specifications and have several items that they can be a class of. The use of subclass of (P279) shall be prefered.

There is a classification in French, that could be an interesting base to translate : Wikidata:WikiProject Materials/Materials/initial classification proposal in French

The structure make use of the templates : ItemLinks to display a link to Wikipedia and to a query listing the subclasses and instances of the item and ItemUseLinks to display a list of materials used by the item :

* {{ItemLinks|Qxxx|Name}}
* {{ItemUseLinks|Qxxx|Name}}

Example filiation edit

material (Q214609, sub,src)
- metallic material (Q1924900, sub,src)
  - alloy (Q37756, sub,src)
    - iron alloy (Q56033224, sub,src)
      - steel (Q11427, sub,src) (Iron + Carbon + ... )
        alloy steel (Q1070521, sub,src)
        high-alloy steel (Q55807454, sub,src)
        stainless steel (Q172587, sub,src)
        duplex stainless steel (Q1266528, sub,src)
        UNS S32205 / EN 1.4462 Duplex stainless steel (Q7388539, sub,src)
        UGI® 4462 Brand of 1.4462 steel < We can store that in a higher level item when the steel is normalized, unless the brand name is very famous or garantee a specific quality level.
        UGI® 4462 cold drawn bar < Depending on the process, the exact material characteristics can change. We can probably store evrything in a higher level item.
        UGI® 4462 cold drawn bar Ø20mm L3m < Real end material used at factory. We probably don't want an item for each size.

material (Q214609, sub,src) edit

List of Subclasses on Wikidata.

metal (Q11426, sub,src) edit

alloy (Q37756, sub,src) edit

See Wikipedia's list of alloys
This class is under : under metallic material (Q1924900, sub,src)

aluminium alloy (Q447725, sub,src) edit

Full list of Aluminium alloys available in Wikidata.

From : w:Aluminium alloy and Understanding Wrought and Cast Aluminum Alloys Designations

Wrought alloys
- 1000 series are essentially pure aluminium with a minimum 99% aluminium content by weight and can be w:work hardened.
- 2000 series are alloyed with copper, can be w:precipitation hardened to strengths comparable to steel. Formerly referred to as duralumin (Q243558, sub,src), they were once the most common aerospace alloys, but were susceptible to w:stress corrosion cracking and are increasingly replaced by 7000 series in new designs.
- 3000 series are alloyed with manganese, and can be w:work hardened.
- 4000 series are alloyed with silicon. Variations of aluminium-silicon alloys intended for casting (and therefore not included in 4000 series) are also known as w:silumin.
- 5000 series are alloyed with magnesium, and offer superb corrosion resistance, making them suitable for marine applications. Also, 5083 alloy has the highest strength of not heat-treated alloys. Most 5000 series alloys include w:manganese as well.
- 6000 series aluminium alloy (Q56153389, sub,src) are alloyed with magnesium and silicon. They are easy to machine, are weldable, and can be precipitation hardened, but not to the high strengths that 2000 and 7000 can reach. 6061 alloy is one of the most commonly used general-purpose aluminium alloys.
- 7000 series are alloyed with zinc, and can be w:precipitation hardened to the highest strengths of any aluminium alloy (ultimate tensile strength up to 700 MPa for the 7068 alloy). Most 7000 series alloys include magnesium and copper as well.
- 8000 series are alloyed with other elements which are not covered by other series. w:Aluminium-lithium alloys are an example.
  - Al-Li (Q447440, sub,src)

Fundry Alloys
- 100.0 Series : Unalloyed compositions; non-heat-treatable
- 200.0 Series : Copper; heat treatable
- 300.0 Series : Silicon plus copper and/or magnesium; heat treatable
- 400.0 Series : Silicon; heat treatable
  - Silumin (Q2088351, sub,src)
- 500.0 Series : Magnesium; non-heat-treatable
- 600.0 Series : Not used
- 700.0 Series : Zinc; heat treatable
- 800.0 Series : Tin; heat treatable
- 900.0 Series : Other element

Materials by use edit

To be organized by industries.

3D printing (Q229367, sub,src)
bearing (Q190100, sub,src)
blade (Q330946, sub,src) (see : w:List of blade materials)
fastener (Q2002016, sub,src)
oil platform (Q689880, sub,src)
prosthesis (Q181802, sub,src)
sailing (Q14085739, sub,src)
... Fell free to add a field you want to contribute to.

Wikidata:WikiProject Materials/Materials

Example filiation edit

material (Q214609, sub,src) edit

metal (Q11426, sub,src) edit

alloy (Q37756, sub,src) edit

aluminium alloy (Q447725, sub,src) edit

zinc alloy (Q204835, sub,src) edit

iron alloy (Q56033224, sub,src) edit

copper alloy (Q518350, sub,src) edit

gold alloy (Q37136268, sub,src) edit

nickel-based alloy (Q1985623, sub,src) edit

Transverse alloy classes edit

Materials by use edit