> For the complete documentation index, see [llms.txt](https://dante-solutions-inc.gitbook.io/dante-6.3-help-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dante-solutions-inc.gitbook.io/dante-6.3-help-documentation/introduction-2/general/material.md).
# Material
The Material section contains a list of base materials populated from the current material directory. Changes to carbon, nitrogen, carbides, nitrides, initial phase composition, grain-size, and chemistry can then be made to specific needs for steel.
**Material Selection**
* Lists the material name(s) located in the current material database. Material selection sets the inputs to the material’s default values from the current material database
**Total Carbon Content (%)**
* Total carbon weight percent in the base material. Total carbon is carbon available in the matrix plus carbon in carbide form
**Total Nitrogen Content (%)**
* Total nitrogen weight percent in the base material. Total nitrogen is nitrogen available in the matrix plus nitrogen in nitride form
**Alloy Precipitate (vf %)**
* Volume fraction of initial alloy precipitate
**Alloy Precipitate Size (nm)**
* Alloy Carbide size in nanometers, at the start of the process
**Ratio of Carbon in Alloy PPT**
* Ratio of carbon in alloy precipitate form taken directly from specific material from DANTE database
**Carbon in Alloy PPT (%)**
* Amount of carbon in alloy precipitate form by multiplying the **Ratio of Carbon in Alloy PPT** by the **Alloy Precipitate (vf%)**
**Iron Carbide (%)**
* Weight percent of carbon “locked” in iron (primary) carbides. The initial carbon value for the analysis will be total carbon minus carbon in carbides
**Iron Carbide Size (nm)**
* Iron Carbide size in nanometers, at the start of the process
**Initial Nitride A (%)**
* Weight percent of nitrogen “locked” in nitride A. The initial nitrogen value for the analysis will be total nitrogen minus nitrogen in nitrides.
**Initial Nitride B (%)**
* Weight percent of nitrogen “locked” in nitride B. The initial nitrogen value for the analysis will be total nitrogen minus nitrogen in nitrides
**Initial Phase Composition (Austenite bal.) (vol. frac.)**
* The initial volume fraction of each phase with austenite taking up any balance. For 100% austenite enter zero (0) for all values.
**Grain Size**
* Nominal - Grain size provided by the material database
* Modified - User defined values for analysis
**Alloy Composition**
* Nominal - Alloy composition from the material database
* Modified - User defined values for analysis
**Reset to Nominal**
* Resets the user defined values to the nominal composition
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