In combat robotics events (Robo Wars), chassis failure is the primary cause of disabling knockouts. Selecting the proper structural material determines whether your robot withstands high-velocity kinetic spinner impacts or fractures on the first collision.
Material Yield Strength & Mechanical Properties
| Material | Yield Strength (MPa) | Density (g/cm³) | Impact Resistance | Best Application |
|---|---|---|---|---|
| SS304 Stainless Steel | 215 MPa | 8.00 g/cm³ | High | Combat bot structural frame & armor plating |
| SS316 Stainless Steel | 290 MPa | 8.00 g/cm³ | Very High | High-stress weapon mounts & spinner armor |
| Wood / MDF | 20–40 MPa | 0.75 g/cm³ | Extremely Low | Rapid paper/cardboard prototyping mockups |
| Aluminium 6061-T6 | 276 MPa | 2.70 g/cm³ | Medium-High | Lightweight inner structural ribs & brackets |
Why Wood & MDF Fail in Combat Arenas
While laser-cut wood or MDF is excellent for rapid physical dimension checks, wood lacks isotropic tensile strength. Under shear stress from a vertical spinner, laser-cut wood splinters along grain lines, causing instant battery containment failures.
Precision CNC Laser Cutting SS304/SS316 in Coimbatore
Fiber laser cutting allows millimeter-accurate slot-and-tab chassis assembly from SS304 stainless steel sheet. Interlocking tab geometries welded or bolted together deliver maximum kinetic energy dissipation across the entire frame.
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