# Hardening Material for Sensitivity
This command is used to construct a uniaxial material object with combined linear kinematic and isotropic hardening.
```tcl uniaxialMaterial Hardening $matTag $E $sigmaY $Hiso $Hkin ```matTag |
unique material object integer tag |
E |
initial tangent stiffness |
sigmaY |
yield stress (or force) |
Hiso |
isotropic hardening Modulus |
Hkin |
kinematic hardening Modulus |
Note: For this material class, the sensitivity parameters can be: E, sigmaY, Hkin, Hiso