Sulfuric acid dew point corrosion resistant steel

Sulfuric acid dew point corrosion resistant steel

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Style       Grade     
 
Standard            Spec (mm)
 
Coil  
Spec (mm)
 
Plate
Characteristic
 
 Application Area                                       
Sulfuric acid dew point corrosion resistant steel 09CrCuSb
Q315NS
Q355NS
GB/T4171
Or Technical Agreement
1.5-19mm 6-50mm This kind of steel mean to add a certain content of alloying elements in steel, when the steel in contact with sulphuric acid type’s gas (such as Discharge waste gas of sulfur steel chimney), to increase below the dew point generated sulfuric acid by SO2, SO3, and H2O corrosion resistance.
 
mainly used for power plant chimneys, air preheater, desulfurization equipment, chemical industry coking equipment and tobacco curing barn.
 

Grade
 
Chemical Component /%
C Si Mn P S Cr Cu Ni
09CrCuSb ≤0.10 ≤0.40 0.4-1.0 ≤0.025 ≤0.015 0.50-1.0 0.2-0.5 0.1-0.3
Q315NS ≤0.15 ≤0.55 ≤1.20 ≤0.035 ≤0.035 0.3-1.20 0.2-0.5 -
Q345NS ≤0.15 0.55 ≤1.20 ≤0.035 ≤0.035 0.3-1.20 0.2-0.5 -
corrosion resistant steel
Corrosion resistant steel
 
Mechanical Property
Grade Yield Strength/MPa
 
Tensile Strength/MPa
 
Elongation/%
 
09CrCuSb ≥300 ≥410 ≥22
Q315NS ≥315 ≥440 ≥22
Q355NS ≥345 ≥470 ≥20

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