The matrix of 304 stainless steel is iron (Fe: 67% -80%), and the core alloying elements chromium (Cr: 17.5% -20%) and nickel (Ni: 8% -10.5%) form an austenitic skeleton to ensure corrosion resistance.
The secondary components include carbon (C ≤ 0.08%), silicon (Si ≤ 1.0%), manganese (Mn ≤ 2.0%), phosphorus (P ≤ 0.045%), sulfur (S ≤ 0.03%), and nitrogen (N ≤ 0.1%), which synergistically regulate the mechanical and processing properties.
The difference between its equivalent grade (such as 06Cr19Ni9) and 304L low-carbon type (C ≤ 0.03%) is significant, with the latter focusing on resistance to grain boundary corrosion.
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