Comparison rule
You cannot compare materials based on one advantage. First, geometry, load, mass, process, cost of complete manufacturing, inspection, repair and delivery risks are recorded. Then the valid options are compared.
One frame for fair comparison
| Compare | Do not substitute |
|---|---|
| Same function and geometry | Names of materials without design diagram |
| Ready system and real process | Individual fiber property |
| Mass, stiffness, damage and environment | Universal "better/worse" rating |
| Cost of the finished result | Unit price of material without consumption and processing |
| Confirmed documents and verification | Typical number from another brand or batch |
Frequently asked questions
Why is there no universal winner in the comparison?
Because the criteria and limitations of a particular part change the feasible solution.
Is it possible to compare only the price of the material?
No. We need the cost of the full cycle: waste, equipment, process, processing, control and risk of defects.
Is a property table enough?
The table helps select options, but does not automatically take into account geometry, connections and manufacturing process.
Can materials be combined?
A hybrid design can be considered if the purpose of each component and the interfaces are defined and verifiable.
When is a test needed?
When the risk of the task, new geometry or lack of confirmed data does not allow justifying the solution only with calculations and documentation.