10/22/2026
A material is not appropriate simply because it worked on the last product.
Material selection should begin with the conditions the product must survive and the performance it must maintain. Temperature, UV exposure, moisture, chemicals, impact, wear, electrical behavior, flammability where applicable, appearance, and expected service life can all affect the decision.
Only then should candidate materials be evaluated against the intended manufacturing process, geometry, tolerances, joining methods, availability, traceability, and cost. Supplier input is valuable—but it is most useful when evaluated against defined requirements.
The result should be more than a material name on a drawing. It should be a documented selection rationale that connects the use environment to design, prototyping, sourcing, testing, and production.
Prototype substitutions also matter. When a prototype uses a different material, the substitution and its limitations should be documented rather than assumed equivalent.
Before asking a supplier which material to use, define what the product must endure.