Aerospace. Medical. Marine. Automotive. Application-driven.
Material selection by application — aerospace lightweight, medical biocompatible, marine corrosion-resistant, automotive cost-balanced. Each domain has preferred materials.
Material selection by application
Identify driving requirement: strength, cost, weight, corrosion, temperature, biocompatibility. Each application has 2-3 driving constraints.
Key principles.
7075-T6 aluminum, Ti-6Al-4V
High strength-to-weight. 7075 for stiffness, titanium for fatigue/temperature.
Ti-6Al-4V ELI, PEEK-OPTIMA
Biocompatible. ELI grade titanium, USP Class VI PEEK.
316L, Monel 400
Saltwater corrosion resistance. 316L baseline, Monel for severe.
6061-T6, 4140 steel
Cost-balanced strength. Aluminum 6061 mainstream.
4140 steel, cast iron
Heavy-duty applications prioritize strength + cost.
6061, ABS, PC
Cost-effective with good aesthetic potential. Anodize-friendly.
316L, FDA plastics
FDA-compliant materials. 316L wetted, USP plastics for product contact.
316L EP, Inconel
Ultra-clean materials. Electropolished 316L, Inconel for high temperature.
316L EP, USP VI
ASME BPE compliant. Electropolished, sanitary connections.
FAQ
Identify driving requirement: strength, cost, weight, corrosion, temperature, biocompatibility. Each application has 2-3 driving constraints.
Use Ashby method: plot materials on chart of two key properties. Select Pareto-frontier candidates.
MMPDS for aerospace metals. ASM Handbook comprehensive. Manufacturer datasheets for specific grades. We can recommend per application.
Prototype: machined from bar/plate stock. Production: may switch to cast/forged/molded for cost. Verify properties translate.
VAVE often substitutes cheaper material. Verify properties: strength, modulus, fatigue, environmental compatibility.
Specify by ASTM, AMS, or proprietary spec (e.g., "AMS 4130", "ASTM A276"). Per drawing requirements.
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