> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Orthotropic Thermal Expansion Property

## About this Block

**What it does:** Creates a list of the Coefficient of Thermal Expansion inputs that are separated into their X, Y, and Z components.

**Common uses:**

* An input in defining an **Orthotropic Material**.
* For conducting a **Thermal Analysis**.

**Tips:**

* Create spatially varying properties by using Scalar Fields as inputs.

***

Defines an Orthotropic Thermal Expansion Property by specifying the directional thermal expansion coefficients. Providing scalar fields as inputs will result in spatially varying material properties.

### Inputs

| Name   | Type                                                               | Description                                          |
| ------ | ------------------------------------------------------------------ | ---------------------------------------------------- |
| Alpha1 | [Scalar Field](../../../../block-documentation/types/scalar-field) | Coefficient of thermal expansion in the x-direction. |
| Alpha2 | [Scalar Field](../../../../block-documentation/types/scalar-field) | Coefficient of thermal expansion in the y-direction. |
| Alpha3 | [Scalar Field](../../../../block-documentation/types/scalar-field) | Coefficient of thermal expansion in the z-direction. |

### Outputs

| Type                                                                                                                   |
| ---------------------------------------------------------------------------------------------------------------------- |
| [Orthotropic Thermal Expansion Property](../../../../block-documentation/types/orthotropic-thermal-expansion-property) |