You can put 2 Y axis - PrimaryY and SecondaryY. You can try using:
<igCA:XamChart Name="xamChart1">
<igCA:XamChart.Axes>
<igCA:Axis AxisType="PrimaryY" Name="Y1" />
<igCA:Axis AxisType="SecondaryY" Name="Y2" />
</igCA:XamChart.Axes>
<igCA:XamChart.Series>
<igCA:Series ChartType="Line" AxisY="Y1">
<igCA:Series.DataPoints>
<igCA:DataPoint Value="4" />
<igCA:DataPoint Value="20" />
<igCA:DataPoint Value="30" />
<igCA:DataPoint Value="15" />
</igCA:Series.DataPoints>
<igCA:Series ChartType="Line" AxisY="Y2">
<igCA:DataPoint Value="40" />
<igCA:DataPoint Value="800" />
<igCA:DataPoint Value="120" />
<igCA:DataPoint Value="350" />
</igCA:Series>
</igCA:XamChart.Series>
</igCA:XamChart>
Can we have more than 2 axis like the picture below? Ignoring the top and bottom label sections.