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DIN standard HII Boiler and Pressure Vessel Steel Plate
DIN standard HII Boiler and Pressure Vessel Steel Plate
DIN standard HII Boiler and Pressure Vessel Steel Plate
DIN standard HII Boiler and Pressure Vessel Steel Plate

DIN standard HII Boiler and Pressure Vessel Steel Plate

DIN standard HII pressure vessel steel has now been superseded with the Euro Norm specification EN 10028.
DIN standard HII Boiler and Pressure Vessel Steel Plate Descriptions:
The main difference between DIN standard HII and DIN standard HI boiler and pressure vessel steel plates is their chemical composition. While both specifications are used for high-temperature service applications and have similar mechanical properties, DIN standard HII steel plate contains more silicon than DIN standard HI steel plate.

DIN standard HI steel plate typically contains carbon and manganese, while DIN standard HII steel plate contains carbon and silicon in addition to manganese. The higher silicon content in DIN standard HII steel plate helps to improve its resistance to high-temperature environments, particularly for applications involving corrosive media.

In terms of mechanical properties, both DIN standard HI and DIN standard HII steel plates have similar tensile strength, yield strength, and elongation properties. However, DIN standard HII steel plate may have slightly higher mechanical properties due to its higher silicon content.

Overall, the choice between DIN standard HII and DIN standard HI boiler and pressure vessel steel plates will depend on the specific requirements of the application, particularly with regard to the environmental conditions, such as temperature and corrosive media.
Chemical Composition and Mechanical Properties:
HII Chemical Composition
Grade The Element Max (%)
HII C Si Mn P S Al Cr
0.20 0.35 0.50-1.30 0.035 0.030 0.02 0.25
Cu Ni Mo Nb Ti V  
0.3 0.3 0.10 0.01 0.03 0.03  
 
Grade HII Mechanical Property
Thickness Yield Tensile
HII mm Min Mpa Mpa
6-16 265 410-530
16-40 255 410-530
40-60 245 410-530
60-100 215 410-530
100-150 200 410-530












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