MatWorld Additive · data trust
Every value traces to a source you can open. It is read in the source's own words, tested by rules, checked by a person, and labelled on the page with how it got there.
Five layers between a source and the value you see.
Every value we read for Additive comes from the maker's own page or data sheet, or an openly licensed study — and links back to it.
An AI model reading a maker's page must return the exact sentence or table row each value came from. Open datasets are parsed from their files.
Every reading is tested against the source text — the quote, the number, the unit, the property — and refused if it fails.
A person checks a sample from every process family against the source, weighted toward the riskiest readings. A wrong value is removed, and finding one widens the sample.
Each value read by AI shows its source and whether a person has reviewed it. If a source is read again and a value changes, its review is cleared until a person looks again.
Every kind of data has its source and its checks. A person's review covers what an AI model reads from makers' pages and data sheets.
| Data | Where it comes from | Automated checks | Human review |
|---|---|---|---|
| Machine specs and material lists | The maker's own product page or spec sheet, with the date it was read. | The quote must be in the source and state this spec, and the number, converted by our own arithmetic, must land in a sensible range. A machine's materials link to the printed form of an alloy, never the wrought one. | Sampled across every machine family |
| Material data sheets | The material maker's data sheet, one row per grade. | The quote must be in the source and state this property; the build orientation, condition and statistic must be the sheet's own, and a mean and a minimum stay separate values. | Sampled across every process the data sheets cover |
| As-printed test data | Public-domain government test data and CC BY studies — only where the licence allows commercial use. | Parsed from the published files, never retyped. A curve read from a figure is labelled as digitised and refused if it disagrees with the study's own strength. | Not sampled — each value cites its study and licence |
| Descriptions and application tags | Written from the material's own record. | Refused if they state a number the record doesn't hold or claim certification, compliance or biocompatibility. Tags use only the description's own words. | Not sampled |
A person compared the value with its cited source and found it read correctly — the number, the unit and, for a material, the orientation and condition it was measured in.
It checks the reading, not the material. MatWorld does not test materials or certify values, and a maker's data sheet states the maker's own results. Every page carries this notice:
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design.
The Terms say more about using reference data.
Cited or absent
A value we cannot trace to its source is not stored.
Printed is not wrought
A printed material never borrows the wrought alloy's strength, stiffness or curves. Only chemistry carries over, marked as such.
Never averaged
Each grade, table, build orientation and statistic stays its own value.