User:Thibdx/Materials properties proposal
Mechanical edit
Ultimate tensile strength edit
| Description | Material proprety measuring the tensil strengh at break (20~25°C) |
|---|---|
| Represents | material (Q214609) > mechanical property (Q5725005) > ultimate tensile strength (Q76005) |
| Data type | Quantity |
| Template parameter | This proprety request is part of the project of creating an infobox for materials |
| Domain | Mechanical property of all solid Materials |
| Allowed values | Any number. Since it depend on parameters such as thermic treatment, most materials will an have a upper and lower bound. Qualifiers : temperature (P2076) (shall be mandatory), under pressure (P2077), determination method (P459). |
| Allowed units | N/mm² / Pa / MPa / Psi |
| Example 1 | SAE 316L stainless steel (Q28453931) → 250 to 300 N/mm² |
| Example 2 | stainless steel (Q172587) → 250 to 2000 N/mm² |
| Example 3 | beryllium (Q569) → 450 N/mm² |
| Source | w:Ultimate tensile strength |
| Planned use | Creating an infobox for materials |
Motivation
This proprety request is part of the project of creating an infobox for materials.
Discussion
Support, but temperature (P2076) should be a mandatory qualifier, property cannot be limited to room temperature only. Wostr (talk) 23:20, 12 July 2018 (UTC)- Support ArthurPSmith (talk) 17:52, 13 July 2018 (UTC)
- Support David (talk) 09:18, 14 July 2018 (UTC)
- Support Dhx1 (talk) 15:50, 16 July 2018 (UTC)
- Support Djhé (talk) 06:34, 17 July 2018 (UTC)
@ديفيد عادل وهبة خليل 2, Wostr, Djhé, ArthurPSmith, Dhx1: 
Done: ultimate tensile strength (P5479). − Pintoch (talk) 07:50, 19 July 2018 (UTC)
Young's modulus edit
| Description | Material proprety linking the elastic deformation to the yield strengh at ambient temperature (20~25°C) |
|---|---|
| Represents | material (Q214609) > mechanical property (Q5725005) > Young's modulus (Q2091584) |
| Data type | Quantity |
| Template parameter | This proprety request is part of the project of creating an infobox for materials from the french Wikipedia : related discussion |
| Domain | Physical and mechanical property of all solid Materials |
| Allowed values | Any number. Well defined materials have one value. Generic materials have a upper and lower bound. Qualifiers : temperature (P2076) (shall be mandatory), under pressure (P2077), determination method (P459), Moisture absorption (not yet created). |
| Allowed units | N/mm² / Pa / MPa / GPa / Psi / MPsi |
| Example 1 | SAE 316L stainless steel (Q28453931) → 200 000 N/mm² |
| Example 2 | SAE 304 stainless steel (Q3600978) → 200 000 N/mm² |
| Example 3 | molybdenum (Q1053) → 330 000 N/mm² |
| Example 4 | brass (Q39782) → 100 000 to 125 000 N/mm² > brass is a generic name for an alloy so that it depends what type of brass. |
| Source | w:Young's modulus |
| Planned use | Creating an infobox for materials on the french wiki (this is the first material proprety requested, others will be needed) |
Motivation
This proprety request is part of the project of creating an infobox for materials from the french Wikipedia : related discussion. It is a first attemp on material proprety creation on Wikidata. Other material propreties will be proposed if a consensus is reached on this one. Thibdx (talk) 21:19, 11 July 2018 (UTC)
Discussion
- Support --Djhé (talk) 14:07, 12 July 2018 (UTC)
- Support David (talk) 14:57, 12 July 2018 (UTC)
- Support yes definitely - somehow I thought we already had this! ArthurPSmith (talk) 17:43, 12 July 2018 (UTC)
- Support, but this property should have temperature (P2076) as a mandatory qualifier; it cannot be limited to room temperature only. Maybe some other qualifiers should also be allowed? Wostr (talk) 23:15, 12 July 2018 (UTC)
Solutions regarding temperature :
- We can consider that if the temperature is not specified, the value refers to room temperature. This is the common use.
- We can add temperature as a mandatory qualifier and the norm used for the test as an optional qualifier. (optional because it is not easy to use).
Regards -- Thibdx (talk) 08:21, 13 July 2018 (UTC)
- We have similar solution in pl.wiki regarding chemical compounds – if conditions are not specified then it's 25 Celsius/1000 hPa. I don't think this is the best approach here in WD. For the second, you can use determination method (P459). Wostr (talk) 12:29, 13 July 2018 (UTC)
- determination method (P459) seems to be perfect.
- On some datasheet the temperature is not specified. Then the user don't know since it depends on the country : w:Standard conditions for temperature and pressure. This is not really important except if the material is something like chocolate acutally. Anyway, It's a detail, most users are smart enough to put something between 20 and 25°C if there is only "room temperature". It can be a mandatory parameter if no one is against this. --Thibdx (talk) 15:25, 13 July 2018 (UTC)
@Thibdx, ديفيد عادل وهبة خليل 2, Djhé, Wostr, ArthurPSmith, Dhx1: Done: tensile modulus of elasticity (P5480). − Pintoch (talk) 07:53, 19 July 2018 (UTC)