The vessels is made of low carbon steel having a maximum carbon content of 0.08%. It's cylindrical without metallic handles or protrusions. The diameter of the flat area of the base of the vessel shall be at least the diameter of the cooking zone. The base of the vessel shall not be convex. The concavity of the base of the vessel shall not exceed 0.006d.
Vessels for Testing Induction Hotplates conform to IEC 60335-2-9 and GB 4706 standard