Material Class

[SerializableAttribute]
public sealed class Material

<SerializableAttribute>
Public NotInheritable Class Material

using Tekla.Structures.Model;
using Tekla.Structures.Geometry3d;

public class Example
{
       public void Example1()
       {
           Beam beam = new Beam(new Point(5000, 7000, 0), new Point(6000, 7000, 0));
           beam.Material.MaterialString = "K40-1";
           beam.Profile.ProfileString = "250*250";
           beam.Finish = "PAINT";

           bool result = false;
           result = beam.Insert();
       }
}