EN 10209 Grade HC300EK
EN 10209 Grade HC300EK introduction
HC300EK is a cold rolled enamelling steel grade with guaranteed minimum yield strength that retains its mechanical properties after deformation and enamel firing. This grade can be used for both one-side and two-side enamelling.
The use of HC300EK grade enables steel thicknesses to be reduced whilst avoiding deformation of the parts after enamel firing. This grade can replace hot rolled steel in the manufacture of water heater tanks. After manufacture, parts like these are generally subjected to a cyclic fatigue test under pressure, during which they must not be deformed. The use of HC300EK grade thus makes it possible to reduce thicknesses to a lower level than is possible with hot rolled steel.
EN 10209 Grade HC300EK chemical
| Property |
Value |
Comment |
| Carbon |
Carbon of 0.075 % |
max. |
| Manganese |
Manganese of 0.5 % |
max. |
| Nitrogen |
Nitrogen of 0.006 % |
max. |
| Phosphorus |
Phosphorus of 0.075 % |
max. |
| Silicon |
Silicon of 0.5 % |
max. |
| Sulfur |
Sulfur of 0.025 % |
max. |
EN 10209 Grade HC300EK mechanical
| Property |
Value |
Comment |
| Elongation |
Elongation of 20 % |
min. |
| Tensile strength |
Tensile strength of 360 - 480 MPa |
As delivered |
| Yield strength |
Yield strength of 280 - 380 MPa |
As delivered | The guaranteed minimum yield strength after 5% deformation and enamel firing is 300 MPa |
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