Material selection is a critical aspect of engineering design. ToolFusion's materials database provides properties for common engineering materials across metals, polymers, ceramics, composites, and elastomers. Data includes mechanical properties (strength, hardness, modulus), thermal properties, corrosion resistance, and fabrication characteristics.

## Material Categories **Carbon Steels:** A36 (structural), 1018 (general), 1045 (medium carbon), 4140 (alloy), A106 (pipe), A516 (pressure vessel), A572 (high-strength). Typical yield strengths from 250-700 MPa. **Stainless Steels:** 304 (general purpose), 316 (marine), 410 (hardening), 2205 (duplex), 904L (high corrosion). Typical yield strengths from 200-600 MPa. **Aluminum Alloys:** 6061 (structural), 6063 (architectural), 7075 (aerospace), 5083 (marine), 2024 (aircraft). Density ~2.7 g/cm³, yield strengths from 100-500 MPa. **Copper Alloys:** C110 (electrical), C260 (cartridge brass), C464 (naval brass), C715 (cupronickel), C17200 (beryllium copper). Thermal conductivity: 100-400 W/mK. **Engineering Plastics:** Nylon/PA, Acetal/POM, Polycarbonate/PC, PTFE, UHMWPE, PEEK. Density 1.0-2.2 g/cm³, operating temperature range -40 to 250°C. **Composites:** Carbon fiber/epoxy, glass fiber/polyester, Kevlar/epoxy. Specific strength 3-10× higher than metals. **Selection Criteria:** Mechanical strength requirements, operating temperature range, corrosive environment, wear resistance, cost constraints, fabrication method compatibility, regulatory code requirements.