Research Article
Effect of Mandrel on Cross-Section Quality in Numerical Control Bending Process of Stainless Steel 2169 Small Diameter Tube
Table 1
Material properties of 2169 stainless steel tube.
| | Material parameters | Value |
| | Young’s modulus E (GPa) | 197 | | Poisson’s ratio ν | 0.29 | | Initial yield stress (MPa) | 987 | | Hardening exponent n | 0.177 | | Strength coefficient K (MPa) | 1796.5 | | Ultimate tension strength (MPa) | 1112 | | Extensibility δ (%) | 22 | | Density ρ (kg/m3) | 7830 | | Constant a | 5.7 | | Constant b | 27.4 |
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